What’s Included in an Air Conditioning Maintenance Appointment?

Your cooling system benefits from regular maintenance. In fact, maintenance has a profound impact on whether your air conditioner works properly and operates safely and efficiently. Regular maintenance can also extend the lifespan of your system.

Keep reading to learn more about what’s included in an AC maintenance checklist and how often this service should be performed. Contact Poston Brothers for all of your cooling system needs.

A Complete List of Air Conditioning Maintenance Steps

Your heating and cooling system offers refuge from extreme weather. A well-maintained air conditioning system is less likely to fail during the heat of summer. Still, some homeowners attempt to either perform tune ups on their own or simply skip regular AC service with the idea of saving money. When a professional HVAC technician performs a complete tune up, air conditioners run more efficiently which means lower energy bills can quickly recoup the cost of professional AC tune ups.

Visual Inspection and Cleaning of the Outside Unit

Every AC service begins with a visual inspection. Clearing any debris that has collected on or near the unit improves airflow. While cleaning the outside unit to remove dirt, dust and other debris, a technician inspects the cover for signs of wear and damage. Loose and missing hardware will be noted along with other issues.

Checking Electrical Connections

All electrical connections in the outside unit will be inspected. Weather, power surges and attrition of time can impact wiring and hardware. Loose connections are tightened and components are tested. Damaged components will be noted and possible repairs will be suggested with clear and easy-to-understand solutions.

Checking Refrigerant Levels

Like electrical connections, your AC unit’s refrigerant system must be inspected for proper levels, tested for leaks and inspected to make sure no potential issues will arise during the cooling season.

Cleaning of the Indoor Unit

Most homes use a combination of an air conditioning and furnace system. In these designs, the furnace acts as the air handler to circulate indoor air. The air filter will be inspected and replaced if necessary. Like the outdoor unit, cleaning dust, debris and other foreign contaminants is important. After the winter, the inside of your furnace may need to be cleaned.

Inspection of Air Handler Components

Testing the electrical connections and components within the air handler prevents expensive repairs and eliminates safety hazards. While your AC unit has been dormant during the winter, the furnace components work hard to keep your home warm. This means your HVAC contractor will pay special attention to the fan motor otherwise known as the blower motor. All of the connections to the blower motor will be tested for proper operation.

Inspection of Ductwork

Energy wasted through leaks in air ducts, damaged ductwork and improperly operating vents causes strain on your HVAC system and leads to excessive cooling bills. Just like clogged air filters lower the performance of your HVAC system, poor ventilation should be remedied immediately. Small repairs to air ducts and adjustments of your vents can prevent expensive repairs and even early replacement of the air conditioning unit.

Clean Outdoor Condenser Coils and Compressor

The outdoor condenser works along with the compressor to remove heat from the refrigerant in your AC unit. The condenser coils are located behind the condenser fins. These are thin metal wiring or mesh that cover the outdoor unit. The condenser coils release heat into the outdoor air. A clean condenser coil is more energy efficient. Professional HVAC technicians carefully clean and inspect the condenser coil to verify your system will work during the hottest summer days.

Check Evaporator Coil

The evaporator coil absorbs the heat inside your home. Located inside your air handler or furnace, the evaporator coil completes the heat exchange to produce cool air inside your home. These coils contain cold refrigerant so they must be clean and free of debris. Dust and dirt on the evaporator coil lead to cracks, freezing and other damage. If left undetected, dirt buildup from the winter can cause evaporator coils to crack, leak or fail completely. Ultimately, the most important part of an air conditioning system tune up is making sure all the major components are working properly.

Thermostat Calibration

The second to last step of an AC tune up is checking the thermostat. While homeowners can test for thermostat issues at home, your HVAC contractor is always working to improve performance and reduce your energy bills. For instance, programming your thermostat to back off temperatures when you are not home can save as much as 10% each year on energy bills. Programmable thermostats and smart thermostats help your system run more smoothly but only when properly calibrated.

Inspection Report

Your technician will work off of a checklist and cater the maintenance appointment to your specific system. Your AC system is unique and the inspection report will reflect this. Making notes of warning signs, damaged components and possible issues helps you make an informed decision on how to care for your AC system. In many cases, technicians will identify minor things like a clogged drain line or blockage in the condensate drain. Simply knowing how to clear these issues can avoid major problems. Regular AC maintenance also helps homeowners know the best air filter for their cooling system.

When you form a relationship with Poston Brothers, our team works hard to keep your heating and cooling system running strong for many years. In short, air conditioning maintenance is far more than changing air filters and knocking off the dust.

Why is AC Maintenance Necessary?

To prevent breakdowns in the peak cooling season, your air conditioning unit should be regularly checked. Just one annual AC maintenance appointment can help save hundreds of dollars in unnecessary cooling costs. Perhaps most importantly, your professional HVAC technician protects your air conditioner from early replacement. Every air conditioner tune up helps your cooling system last as long as possible.

How Often Should You Schedule an AC Maintenance Appointment?

To protect your air conditioner, you only need one annual tune up, but timely maintenance is key. Regular AC maintenance in the early spring cleans the inside components that may be dirty from furnace operations and prepares your outside unit that has been dormant all winter. A simple way to care for your air conditioner at the optimal time is to contact Poston Brothers. Our team is able to set your AC maintenance appointment at the right time of the year.

The most energy-efficient AC systems require air conditioning maintenance to keep your family and home cool all season long. When you call on Poston Brothers, we ensure your air conditioning unit is ready for whatever the summer months bring. Our professional technicians solve our homeowners’ problems with expert skills and thorough answers. Contact us today to schedule an appointment.

What AC Is Most Energy Efficient?

The concept of air conditioning has existed for thousands of years. This impulse to create a more comfortable environment with cool air shows how much hot summers can disrupt our lives. The first practical air conditioning system was designed in 1902 by Willis Haviland Carrier. The humid heat caused paper to swell and shrink at the Sackett-Wilhelms Lithographing & Publishing Company printing presses. His design helped to control the humidity and temperature within the printing facility, and similar designs rapidly grew across the country.

Now, air conditioning systems have become vital to every indoor setting including homes, offices, schools, and other commercial buildings. Central air conditioners improve the comfort, health and security of your home. Unlike portable air conditioners and window units, a contemporary AC unit can be designed to be incredibly energy efficient, as it reduces carbon emissions and saves money. Achieving energy-efficient air within your home is a common goal of homeowners when they speak with Poston Brothers. Whether you are planning to purchase a new AC unit; gaining insight into how to improve your existing HVAC system; or discovering methods to get the best life expectancy from your AC unit, Poston Brothers provides extensive insight.

Why Air Conditioners Are Important for Your Home

Air conditioners play a significant role in the comfort, health and security of your home. Controlling the temperature and air quality within homes and businesses is not simply a matter of comfort; air conditioning provides protection for families.

In hot weather, air conditioners help to control the temperature which offers an oasis from dangerous heat. Preventing heat-related illnesses such as heat stroke and heat exhaustion is important during the summer heat. The symptoms of these illnesses come on quickly, especially for young children and older family members.

Air conditioners also help to reduce indoor air pollution by circulating air throughout your home and filtering the air. Many air conditioners can help reduce the risk of respiratory problems, allergies, asthma and other health issues.

Air conditioners also protect your property by maintaining the humidity within your home. High humidity levels may cause electrical shorts, make materials more flammable and increase the risk of fires.

Overall, air conditioning can help to protect families by providing a comfortable and safe indoor environment, reducing the risk of heat-related illnesses and indoor air pollution, and reducing the risk of fire.

Installing a More Energy-Efficient Air Conditioner

Early air conditioners focused solely on the process of controlling the temperature, humidity, and air quality in a space to create a comfortable environment. Designing safer, more environmentally friendly and energy-efficient air conditioners became a priority for a number of reasons in the late 20th century. For homeowners, effective cooling power balanced with the lowest energy consumption helps to keep energy bills lower without sacrificing safety and comfort.

Some of the most recognizable energy-efficiency ratings include:

Energy Star Certified

In 1992, the Environmental Protection Agency created a voluntary program called Energy Star. This program has the dual goal of saving consumers money and protecting the environment from energy waste. At this point, nearly every appliance within your kitchen, garage and even electronic gadgets can earn the Energy Star label. Energy Star-certified products must exceed the energy standards for that product. While Energy Star-certified products help you recognize energy-efficient models, nearly every manufacturer has gone beyond this voluntary program.

British Thermal Unit

The BTU rating of an air conditioner describes how much heat the air conditioner can remove from a room per hour. The higher the BTU rating, the more powerful the air conditioner is and the larger the room it can cool. This system of measurement can often be confusing because BTUs are sometimes used to measure the energy efficiency of an air conditioner. You should not assume that a unit with a lower BTU rating will use less energy to run. Likewise, you should not assume a higher BTU will provide more cool air to every area.

Instead, the British Thermal Unit is relevant for cooling capacity. Manufacturers provide guidelines that highly trained HVAC technicians use to match the ideal air conditioner to the square feet and design of your home. What size air conditioner you purchase is based on the square feet of your home. The wrong size air conditioner, both too small or large, will not only waste energy but can cost thousands in repair and replacement costs. In short, experts use British Thermal Units to match the proper AC unit to the square feet of your home.

Seasonal Energy Efficiency Ratio (SEER)

According to the U.S. Department of Energy (DOE), the Seasonal Energy Efficiency Ratio (SEER) is a measure of the efficiency of an air conditioner over a typical cooling season. It is calculated by dividing the cooling output of the system (BTUs) by the energy input (in watts) during a typical cooling season. The higher the SEER rating, the more energy efficient the system is.

The DOE sets minimum SEER ratings for air conditioning systems sold in the United States. As of 2021, the minimum SEER rating for standard air conditioners is 14. Manufacturers are constantly improving designs. High-efficiency systems with SEER ratings above these minimums are available and can help to save energy and reduce energy costs.

More than Energy Star ratings, the SEER rating is an important factor to consider when selecting an air conditioning unit because it greatly influences operating costs. This data, also known as seasonal energy efficiency rating, is clearly indicated on units. When you work with an HVAC professional, there may be a number of models that suit the square feet of your home. Energy consumption is a long-term cost as most air conditioners will last 15-20 years. Reviewing the SEER rating is the best way to identify the best air conditioners for low energy consumption.

Steps to Reduce Air Conditioning Energy Bills

The Energy Star decal and SEER rating label are not the only measure of energy-efficient air conditioners. There are some extremely simple steps to truly improving energy efficiency in your home.

Upgrade Thermostat

For a standard thermostat, you should set the thermostat to the highest comfortable temperature. For every degree you lower the thermostat, you can save up to 3% on your energy bill. Combined with an energy-efficient air conditioner, this makes your energy consumption a bit lower.

Programmable and smart thermostats make the most impact. Running your air conditioning system when you are not home is like turning on every lightbulb before you leave for work. It’s a waste of energy and money. Smart thermostats automatically adjust the temperature when you are not at home. By avoiding unnecessary cooling while you are not at home, you reduce energy usage, and your air conditioner works less.

DIY Maintenance

Keep the air filter clean in your central air conditioner. Energy efficiency is reduced when airflow is restricted. You can purchase the most energy-efficient air conditioner, but if you neglect it, dirty filters, dirty air conditioning units and dirty air ducts all work to increase strain.

Check Vents and Air Ducts

Depending on where air ducts are located in your home, a visual inspection annually may be needed from a professional contractor. A major source of energy loss is through compromised air ducts and dirty and clogged vents. A damaged air duct or leaky seal undermines the most energy-efficient air conditioner.

Create Shade and Circulation

When necessary, close shades, blinds, and curtains to block the sun’s rays. This can help to keep your home cooler and reduce the load on the air conditioner. Using ceiling fans to circulate the air can make a room feel comfortable, allowing the thermostat setting to be adjusted to a warmer setting.

Average Lifespan of AC units

The average lifespan of an air conditioner is about 15-20 years. There are a wide range of factors that affect the unit’s lifespan, most notably the quality of the air conditioner, frequency of use and frequency of maintenance. In short, the average life of an air conditioner largely depends on you.

Air conditioners that are properly installed and maintained can last longer than those that are not. When Poston Brothers maintains an air conditioner each year, the system is far more likely to run efficiently.

If your air conditioner is more than 15 years old and experiencing frequent problems, it may be time to consider replacing it with a newer, more energy-efficient model. Furthermore, an air conditioner that is not energy efficient costs far more to operate.

Choosing a New Air Conditioner

An HVAC professional provides detailed consultations to guide you to the right choice for your home and family. There is always a goal to match the most energy-efficient air conditioner to your home. Unlike mounting a window unit and crossing your fingers, efficient air conditioners are designed by highly trained professionals.

First, technicians match the right size central air conditioning system for your home. Next, you must balance the efficiency and features you desire with your budget. An air conditioner is a major expense for many homeowners. We provide consultation to help you make a careful decision:


This is the most important long-term factor. We help you understand how the energy rating will impact your energy use each month.


Adding air cleaners, humidifiers, smart thermostats and other indoor air quality solutions can impact your energy usage and thus increase energy efficiency throughout your home.


Consider financing as a method to offset the initial costs. While the energy-efficiency ratio appeals to every homeowner, the reality is you must be able to afford the air conditioner. Poston Brothers offers financing options to help offset the expense of air conditioning units.

Installation of Central Air Conditioners

The proper installation of energy-efficient air conditioners helps your system run smoothly, saves money and extends its lifespan. Designing the proper ductwork, adjusting vents and calibrating the AC unit greatly contribute to the energy-efficient air conditioning experience you need to create. The best air conditioner will be wasted if not properly installed, maintained and repaired.


Annual inspections are vital to keeping your system running efficiently. While homeowners can and should keep the area around the unit free of debris and change air filters regularly, it’s crucial to partner with professional HVAC services for annual inspections.

Annual inspections inspect the complete system for any leaks within the unit and the ductwork. Over time and use, components need to be cleaned, adjusted, tested and calibrated. For instance, a dirty coil reduces efficiency. Annual inspections verify that your unit, ductwork and thermostat are all working at the highest levels. Poston Brothers offers an HVAC Maintenance Program for homeowners to simplify the tune-up and inspection of their HVAC system.

Air Conditioning Repair

Beyond maintenance, aging air conditioners may need occasional repairs. When your air conditioner is running strong, your energy usage will be low. Knowing the warning signs your air conditioner is losing efficiency is important to saving money. Obviously, tuning up and repairing your air conditioner helps your air conditioner last as long as possible.

Some of the top signs of repair that lead to increased energy consumption include:

Low Airflow

If your air conditioner’s airflow suddenly weakens, your system must work harder to properly cool your home. Some of the most common reasons for reduced airflow include clogged HVAC filters, blockages in air ducts, internal issues in the air handler and frozen evaporator coils. Some basic issues like replacing the air filter can be performed at home, but calling Poston Brothers for AC unit repair is the wisest choice.

No Cool Air

Refrigerant leaks and faulty compressors may result in hot air blowing from your air conditioner. Homeowners can inspect the thermostat. Verify the system is on and the mode is set to cooling. Surprisingly, we often find thermostats are the cause of the loss of cooling power. When warm air is blowing from your air filter, Poston Brothers has the knowledge and tools to quickly restore comfort.

If it has been some time since your air conditioning system has been maintained, you may have a dirty outdoor condenser unit, a dirty or clogged air filter, a broken condenser fan or damaged air ducts. Energy waste through leaks in air ducts can be resolved through repair and maintenance.

The System Is Short Cycling

Air conditioner short cycling occurs when your unit turns on and shuts off too frequently. As well as failing to cool your home, short cycling can lead to excess wear and tear and extreme increases in energy bills.

Like other signs of AC repair, a lack of maintenance is a primary culprit. Again, a dirty HVAC filter could be the problem. When your system’s filter becomes too clogged, your HVAC unit must work harder to compensate. Instead of overheating or breaking down completely, your AC unit may simply shut down prematurely. These issues should always be addressed by a professional technician.

Strange Sounds and Smells

If you hear anything abnormal, promptly shut your system off. Likewise, if you notice a foul smell coming from your AC, act quickly by turning your AC unit off and calling Poston Brothers. If dust and excess moisture build up on the AC unit or in the air handler, you may smell mold and mildew. Most air conditioners that are well maintained will not experience disruptions in operations, but your HVAC system may need occasional repairs.

Benefits of AC Repair Service

While you may put off calling for an air conditioning repair, you really should get your system fixed as soon as possible. Neglected issues often turn into bigger problems and very seldom go away on their own. There are many benefits to having air conditioning repairs done quickly, including:

Improving Comfort

As previously noted, the cooling process afforded by air conditioners protects your family. A compromised air conditioner is a health and safety issue. At the first sign of trouble, contact our team. Fortunately, repairing your air conditioning unit allows you to gain back the comfort of a cool environment in your own home.

Saving Money on Replacement Costs

Unlike a window unit, the best air conditioners are built to last for decades. It can be costly to replace your air conditioning unit, and when you initiate repairs at the first warnings of trouble, professional technicians are able to intervene, diagnose and repair minor issues before they escalate. The last thing any homeowner wants is an unnecessary AC replacement.

Extending the Life of Your Unit

Problems with air conditioning units can quickly escalate, leading to damage that can decrease the lifespan of your heating and cooling system. Poston Brothers can help with air conditioning repairs and maintenance to keep your unit running strong. We keep cold air filling your home all summer long.

Contact Poston Brothers for Air Conditioning Services

Let’s face it – most homeowners only consider air conditioners and the rest of their HVAC systems when they break. Few of us look at the energy-efficiency rating on our central air conditioner. HVAC professionals spend years training, designing and repairing air conditioners. When you hire an experienced, local HVAC company, you gain experience and care. At Poston Brothers, our technicians train with the manufacturers on the latest techniques and tools for gaining the most energy efficiency. Central air conditioning does not have to come with a huge energy bill.

Poston Brothers has a passion for getting the most efficient and robust performance from your AC unit. When you call our team for any air conditioning service, we work tirelessly to keep your system running with peak energy use. Our top goal is your comfort, but we have a real passion for lower bills, cleaner systems and longer lifespans. When you need a partner in choosing a new energy-efficient air conditioner or to keep your current system running in tip-top shape, call on Poston Brothers.

How Does a Heat Pump Work in Winter?

One of the primary benefits of installing heat pumps is the ability to provide both cooling and heating to your home. While conventional HVAC systems depend on the combination of air conditioners and furnaces, heat pumps offer an effective single source to control the comfort within your home year-round. Heat pumps are exceptionally energy efficient, and contemporary models are able to work in cold weather temperatures common throughout the Midwest.

Understanding How Heat Pumps Work

There are two modes for air source heat pumps. During the warmer months, heat pumps work effectively like air conditioners. Hot air within your home passes over cool indoor coils. Energy is removed from the air, and pressurized refrigerant transfers the heat to the outdoor unit. Air temperatures within your home are reduced.

When temperatures drop, a cold climate heat pump may replace or work alongside a natural gas or propane furnace. As a heating system, the process reverses.

Cold air from inside your house is passed through the air handler or furnace depending on the design of your system. Within the system, high-pressure, high-temperature gas in the indoor coil transfers heat to warm the air. Cold temperatures condense refrigerant in the coil and this energy is transferred to the outdoor unit. In the outdoor coil, heat from the air transfers energy to the low-pressure refrigerant. As a low-temperature refrigerant moves through the compressor, the temperature rises and pressure builds. The cycle continually repeats, transferring heated refrigerant into your home and removing cool refrigerant from your home.

Can a Heat Pump Replace a Gas Furnace?

Considering the benefits of heat pumps both for energy consumption and environmental impacts, many homeowners inquire about replacing furnaces with heat pumps. Every home and household is unique so hiring an experienced, highly knowledgeable team is important. Because heat pump technology is rapidly advancing, Poston Brothers works tirelessly with manufacturers to train on the benefits and limitations of heat pumps.

Rapidly Evolving Technology

Historically, geographic regions that experience prolonged and extremely cold weather require a furnace or a hybrid heating system that combines a heat pump system with a furnace. In a hybrid heating system, an air source heat pump provides the majority of heating throughout the cold weather months. When temperatures drop below the efficient range of the heat pump, a natural gas furnace or other heat-producing appliance supplements the heat pump.

As a leading manufacturer of air source heat pumps, Daikin continues to design innovations that allow heat pumps to work in cold weather. This allows many homeowners to consult with Poston Brothers about a more efficient and environmentally friendly method of heating their home. Even in freezing temperatures, contemporary heat pumps are able to draw energy from the outside air and operate efficiently.

Incentives for Installing a Heat Pump

In 2022 the Inflation Reduction Act introduced tax credits for residential renewable energy products. Heat pumps are included in this tax credit, allowing more homeowners and HVAC professionals to access these appliances.

Heat pumps are considered renewable energy because they do not produce direct carbon emissions. A furnace relies on natural gas or propane to generate heat. These systems are very effective but are less energy efficient than a heat pump. The byproduct of burning gas must also be exhausted from your home. Heat pump systems function solely by using electricity so there are no direct emissions.

More notable to many homeowners is saving on energy bills. A residential heat pump significantly reduces energy usage compared to other forms of heating. So whether your household is focused on saving money on heating and cooling or your top priority is reducing greenhouse gas emissions, Poston Brothers has you covered with heat pump installation.

Can Heat Pumps Work in the Winter?

For almost all winter conditions, modern heat pumps provide a great solution to heating homes efficiently. You have direct control over the system from your thermostat. Heat pumps simply operate in the background of your life. Extreme cold creates a challenge which is why contacting an HVAC company that specializes in heat pumps is important. Choosing the right heat pump for your home and environment is essential.

Not all HVAC companies specialize in heat pumps, so contacting Poston Brothers is a wise choice. We take the time to evaluate the unique needs of your home and answer your questions with careful and simple-to-understand answers. For some households, we install air source heat pumps with an air handler to provide all the heating and cooling required for the design of your home. Some homes benefit from using a hybrid heating system with a furnace and heat pump. When you work with the team at Poston Brothers we happily guide you through an informed process so you make the right choice for your home.

What Is the Difference Between Commercial and Residential HVAC Systems?

Properly functioning HVAC systems on commercial buildings have a major impact on the success of a business. When employees are comfortable and happy, operations run smoother. For customer-facing businesses, the indoor environment is critical to how commerce occurs. Customers stay within ideal environments for longer periods of time and often drive engagement with your business when the weather outside is extremely hot or cold.

The relationship between air conditioning and the success of commercial businesses dates back to theaters in the early 1920s. As building designs transform, the differences between commercial and residential HVAC systems have widened. Learning how commercial HVAC systems operate helps business owners understand the importance of working with highly skilled, experienced and properly equipped commercial HVAC experts like Poston Brothers.

5 Differences Between Commercial HVAC Systems and Residential HVAC Systems


For practical purposes, commercial heating and cooling systems are far more complex than residential systems. A commercial building may include many levels and house multiple businesses. Different levels and areas within a commercial building require unique temperature controls. For instance, manufacturing areas where machines produce heat require special designs. Sensitive components like computer servers and temperature-sensitive merchandise demand highly regulated and stable temperatures. Within office areas, a focus may be placed on the decibels produced by the HVAC system. Commercial HVAC specialists possess a high level of skill and experience to design systems to suit the complexity of businesses.

In comparison, residential HVAC systems are far more simple. There is a far more straightforward planning stage in locating the ideal place to install a furnace and mount a single air conditioning unit. Likewise, the design of ductwork, vents and thermostats is personalized most often to a single environment throughout a home.


The second primary difference between residential and commercial HVAC is the location of equipment. Furnace and air handlers in residential homes are primarily located in basements or ground-floor garages. Air conditioners and heat pumps are typically mounted in backyards and concealed from street view but are easily accessible for maintenance and repair.

Commercial units are most commonly mounted on rooftops or dedicated areas specifically purposed for the demands of commercial HVAC equipment. Commercial ductwork is highly complicated compared to residential heating and cooling systems. The scope of air duct networks must be located to balance performance and efficiency. A slight mounting error in a residential home may cost a few cents in wasted energy each month. When similar errors occur in commercial HVAC systems, energy costs can skyrocket. The commercial HVAC technicians at Poston specialize in commercial HVAC systems, installing, maintaining and repairing equipment in the most challenging projects. No matter the conditions, commercial HVAC professionals remain focused on cost-effective and high-performing systems.


There is a clear difference between the size and scope of commercial HVAC systems and a standalone residential unit. Manufacturing and installation processes for commercial HVAC systems are distinct. Commercial systems require unique maintenance expertise, state-of-the-art tools and far more knowledge than residential models. While commercial HVAC is a highly competitive market, commercial HVAC systems benefit most when professional contractors possess all three qualities.

Maintenance expertise demands time to evaluate and optimize every component within the system. This reduces operating expenses and protects against breakdowns.

State-of-the-art equipment measures, tests and calibrates operating equipment including furnaces, air conditioners, ductwork, fans and thermostats. With the best technology, skilled technicians are able to improve performance, reduce energy use and even improve noise pollution.

Knowledge of commercial HVAC systems helps technicians design the most efficient system and respond properly when equipment needs repair. The complex nature, greater environmental demands and higher requirements of commercial HVAC systems are not for amateurs or inexperienced HVAC technicians. Most commercial HVAC specialists work for years under a senior technician simply to master commercial HVAC maintenance.


One of the reasons it takes so long to train commercial HVAC technicians is to understand the design goals of commercial systems. For instance, consider the drainage system. In a residential high-efficiency furnace, a single drain pan and few feet of PVC are all that is necessary to remove liquid safely out of your home. Commercial HVAC systems include a series of multiple pans and pipes to safely manage liquid. Furthermore, ductwork design manages noise pollution, efficiency and performance. Commercial zoning adds to the difficulty of mastering the trade.

Beyond the exterior designs of a commercial system, technicians must learn the larger and more intricate designs of commercial units. Training with manufacturers, working with experienced peers, and, most importantly, growing within an established commercial HVAC company, technicians help businesses create ideal environments for staff and consumers.

Contact Poston Brothers for Commercial HVAC Services

Serving our community for nearly a century, Poston Brothers has built a reputation for helping businesses design, build and maintain their commercial HVAC systems. Our team of specialists focuses on helping businesses improve existing HVAC systems and quickly responding to requests for repair. As a leader in the community, we are dedicated to empowering our local economy. When you trust us to provide professional commercial heating and cooling services, we are confident you’ll never look elsewhere.

Furnace Repair vs Furnace Replacement: Which Is Right For You?

For many homeowners, your heating system quietly provides comfort and warmth throughout cooler months. Beyond scheduling regular maintenance each fall and replacing your air filter, homeowners rarely interact with a furnace. So when something goes wrong your first reaction may be confusion and stress. Fortunately, Poston Brothers have some simple guidelines for choosing when to repair your furnace or purchase a new furnace.

Common Signs of Furnace Issues

Before your furnace fails there are often warning signs. When you hire professional HVAC technicians to perform annual maintenance minor issues are often repaired. So tune-ups each fall are the best way to avoid costly repairs.

Whether or not you perform maintenance, all homeowners should pay attention to the performance of their furnaces. Throughout the colder months, you should monitor your energy bills. Paying attention to sudden spikes in energy use indicates your furnace is working harder to heat your home. Worn components, dirty air filters, and clogged systems demand more energy to heat your home. Dirt and malfunctioning components cause stress and can lead to breakdowns.

When the furnace is underperforming you may notice uneven heating and cold spots throughout your home. Other warning signs that your heating system is struggling are strange sounds and odors. Whistling, banging, and clanging sounds should prompt you to immediately turn off your furnace. Foul scents may be mold growing in your furnace or that it is emitting carbon monoxide. A burning smell could indicate a bad electrical connection. Quickly responding to any issues within your furnace may be the difference between the need to repair or replace your furnace.

When to Repair Your Furnace

HVAC professionals should provide a complete inspection of your heating system when diagnosing the primary failure within your furnace. The advice of an experienced and certified technician should be considered before making any kind of purchase. When you form a relationship with a reputable heating and cooling company like Poston Brothers, you can trust the advice. Generally, if a furnace is under 10 years old and has no history of repair, the repair costs often make sense. When a furnace is repaired the goal is to provide a long-lasting solution for your home.

When to Replace Your Furnace

In some circumstances, installing a new furnace is the best decision for your home. The primary advantage when you replace your furnace is reliability. New furnaces operate for many years without the need for repair and manufacturers like Daikin provide a warranty against malfunction. Another additional benefit includes energy bills are lower with a new furnace system. Annual fuel utilization efficiency (AFUE) is far higher in new gas furnaces and your current furnace has most likely lost efficiency as it aged. Since a replacement furnace is a major expense, homeowners should consult with a professional when deciding between repairing or investing in a new heating system.

There are some specific cases where furnace replacement is almost always the best solution. The average lifespan of a furnace varies based on your household, maintenance and other factors. Generally, furnaces that are over 15 years old or have a history of repairs may need to be replaced. Especially when major components fail including a cracked heat exchanger and faulty blower motor. Repair costs to fix major components like these may exceed the life expectancy of your furnace. This is another reason why building a relationship with a trusted HVAC company like Poston Brothers is important.

When to Call a Professional

At the first sign of issues, homeowners should contact our team. Proper maintenance and minor repairs help to optimize performance and improve the life expectancy of your furnace. There are two common scenarios our technicians encounter too often. First, many homeowners notice warning signs like noises coming from the furnace, higher energy bills, and even carbon monoxide detectors sounding but do not contact Poston Brothers until their furnace breaks down completely. Second, some homeowners pay for frequent repairs. Bills quickly mount because of poor advice and ill-advised repairs.

Contact Poston Brothers for honest and professional repairs. We always act in the best interest of our customers. When our team inspects your furnace we provide thorough consultation so you can make an informed decision about when to repair or replace your furnace.

How Much Does a Whole House Humidifier Cost?

During winter months, the cold outdoor air is dry because of a lack of humidity. Likewise the air within your home loses humidity. When your furnace runs even more moisture is lost. Humidifiers improve the indoor air quality and restore comfort to your home. Many homeowners enjoy the benefits of portable humidifiers to improve humidity levels in the bedroom or a workspace. Adding a whole-house humidifier treats all of the air circulating throughout your home. Poston Brothers Heating and Cooling installs humidifiers into your HVAC system to alleviate a number of common ailments and complaints of dry winter air.

Symptoms of Low Humidity Levels

Low humidity levels often aggravate allergies, irritate eyes and dry your skin and hair. Scratchy skin, dry eyes, chapped lips, bloody noses, dry throats, and coughing are all side effects of low humidity levels. Once you escape from your frigid winter temperatures, your home should be an oasis not another source of aggravation. Humidifiers help alleviate and prevent these symptoms.

A stable, ideal humidity level within your home does not simply improve your comfort. Maintaining constant humidity protects the structure of your home including wood surfaces like flooring and furniture. Ideal humidity even brightens the health and appearance of houseplants. Finally, higher humidity feels more comfortable so many homeowners can lower the temperature setting on their thermostat to save on energy bills.

Installation Cost of Whole House Humidifier

Since a whole-house humidifier requires installation into your heating system, homeowners should consult a professional HVAC contractor. When you contact Poston Brothers our helpful support team can answer your questions and schedule an evaluation of your home. When our certified technicians arrive at your home we consider the size of your home, the design of your HVAC system and advise the best whole-house humidifier to suit your home.

The cost of the whole-house humidifier includes both the installation services and equipment. Obviously smaller, more basic units are less expensive than advanced models designed for larger homes. Your new whole-house humidifier will need a water line connected to it to generate moisture needed to be added to the air. The cost of using this extra water is very low, and when you think about the savings you incur from lowering your thermostat, you may find that these costs balance each other out.

Even with similar models, the design of your HVAC system will alter installation costs. Due to these many variables, whole-house humidifiers range from $300 to $1500. Many homeowners are pleasantly surprised by the added home value of installing a humidifier. Poston Brothers provides a fair and easy estimate so we always encourage homeowners to contact us.

Do You Need a Whole House Humidifier?

Humidistats are simple devices that measure the level of humidity within your home. Using this device throughout your home confirms whether you are suffering from dry air and low humidity. The ideal humidity range is 50 to 60 percent. Most homeowners consider a whole-house humidifier after experiencing the benefits of smaller models.

Steam humidifiers and evaporator humidifier models help improve or maintain humidity levels in limited spaces. If you or any member of your household suffer from the seasonal health ailments listed above, a humidifier often helps. Other indications of low humidity levels include excessive static electricity, cracks in indoor structures, and exacerbated snoring.

How Does a Whole House Humidifier Work?

There are several varieties of whole-house humidifiers including steam humidifiers and flow-through humidifiers. The basic function of these different whole-house humidifiers works similarly. Once installed the humidistat monitors the humidity level as air enters your furnace. When the air is dry the humidifier adds water vapor as air flows toward the furnace. Beyond the cost of installation, humidifiers do not greatly impact energy and maintenance costs. Humidifiers should be inspected annually during your furnace tune-up but last for many years without the need for repair or replacement.

Call Poston Brothers to See If A Whole House Humidifier Is Right for You

Many homeowners benefit from humidifiers but do not realize how much more effective and affordable whole-house humidifiers are. Poston Brothers provides the complete inspection, installation, and maintenance of humidifiers. A whole-house humidifier can be installed in many homes but only a professional HVAC technician can evaluate your home. Humidifiers do require space and you don’t have to refill tanks regularly. When you contact Poston Brothers our team thoroughly explains the benefits and answers all of your questions.

Signs Your Furnace Heat Exchanger Has Gone Bad

Aside from occasionally adjusting your thermostat, replacing air filters and annual furnace tune-ups from professional HVAC technicians, modern furnaces require very little attention. Your heating system provides warmth throughout the coldest months and most brutal winter storms. For most homeowners, your furnace exists in the background of their life. That is until catastrophe strikes and your furnace breaks down.

When a furnace malfunctions or stops running completely, there is a reasonable sense of fright. Without a gas furnace to warm air, icy outdoor temperatures quickly fill your home. The health of your family and the security of your home is in jeopardy. Gas furnaces can pose a secondary risk when a heat exchanger malfunctions. Carbon monoxide poisoning is a very serious possibility when a cracked heat exchanger is not quickly detected. Knowing the warning signs of when your furnace heat exchanger has gone bad should be a primary focus of every homeowner.

What is a Heat Exchanger?

A heat exchanger transfers heat from natural gas or propane to the indoor air. Burners ignite gases entering the heat exchanger. As the heated gas moves through coils air absorbs the heat through thermal conduction. The heat exchanger exhausts flue gas to the outside of your home.

Heat Exchanger Cracks

Cracks may occur in any area within the heat exchanger. There are many causes for heat exchangers to develop cracks, but they are most commonly caused by improper maintenance. Strained systems often result in a cracked heat exchanger. Clogged filters, dirty coils, moisture, and malfunctioning burners are common culprits. Potential risks are numerous and serious. Generally, the most immediate concern is carbon monoxide which poses a serious health risk.

Signs of Heat Exchanger Problems

Cracked heat exchanger symptoms vary from moderate warnings that can be treated to severe problems. As a basic rule, any changes in the normal operations of your furnace should be inspected by a certified HVAC technician. Heat exchanger cracking should only be diagnosed by a trained professional.

Unpleasant Odor

Unpleasant odors from natural gas and propane furnaces are immediate signs to take action. Shut down the furnace, turn off gas lines and immediately contact professionals. A damaged heat exchanger may leak foul-smelling odors throughout your home.

Soot Build Up

Build up of soot inside the furnace indicates improperly adjusted burners. Carbon should not build up within furnace housing. If you observe any soot or black carbon spots within the furnace, contact a professional HVAC contractor. Proper service will clean and evaluate the condition of the furnace.


Even small cracks in a heat exchanger often generate noise. Rattling and banging within your furnace is a warning to shut down the furnace and call on service professionals.


Corrosion in heat exchangers is monitored during maintenance. Properly adjusted burners prevent corrosion caused by vibration, temperature and water. Spotting corrosion and acting quickly before a heat exchanger cracks is wise.


Heat exchanger cracks are cause for immediate concern. Any damage to a heat exchanger can seriously risk the health of your family, the safety of your property, and obviously, the function of your furnace.

Reducing Risks

There are some very economical ways to reduce the risks of damaged heat exchangers and other furnace repairs. When you contact HVAC professional to schedule maintenance you can ask about the carbon monoxide detector and how to replace the air filter on your heating system.

Furnace Maintenance

Annual inspections by a professional HVAC technician prevents the most dangerous risks to family and home. Cleaning all components, testing the system and calibrating the furnace during the fall greatly reduces the risk of a cracked heat exchanger endangering your family. A complete tune-up of your furnace each year also protects other components from failing, improves energy efficiency, and improves the life of the equipment.

Carbon Monoxide Detector

Installing carbon monoxide detectors throughout your home will alert you to leaks quickly. If a carbon monoxide detector alarm sounds you should shut down all systems, vacate your property and contact professional services to diagnose and repair the issue.

Replacing Air Filter

Clogged air filter issues create many issues within HVAC systems. Checking the air filter monthly, cleaning around the furnace, and replacing the air filter throughout the year are easy tasks any homeowner can perform. Adding a reminder to your calendar to replace your air filter may avoid expensive repairs.

Call Poston Brothers for Furnace Maintenance and Repairs

If you’re concerned that your furnace’s heat exchanger is cracked, call Poston Brothers right away. We can inspect your furnace and talk to you about installing a new unit if needed. Contact Poston Brothers to make an appointment.

What to Check If Your Heat is Not Working?

If you wake up to a frigid home on an icy winter night, many homeowners’ first step is to call an HVAC professional. Highly trained, skilled, and certified technicians are the best choice to repair any malfunction within your heating system. If you find yourself suddenly without heat, Poston Brothers share what to check if the heat is not working before you call an HVAC company for help.

Furnace Troubleshooting Checklist

Issues with Thermostat

Your first step is to check the thermostat. Power surges in wired thermostats and depleted batteries may reset your system or turn it off entirely. Furnace problems are not always connected to the unit itself. After checking the thermostat display examining the circuit breaker helps to confirm electrical issues are not the primary cause. Also, make sure your thermostat is set to “heat” and not “cool.” It may seem silly, but it happens more often than you would think.

Clogged Air Filter

Air filters should be checked monthly and dirty filters should be replaced as necessary. Dirty air filters obstruct airflow. If your heating system is not blowing warm air through the vents the issue may be the air filter choking the system. If the airflow is severely blocked heat exchangers may overheat and shut down. Inspect pleated filters carefully. High-quality pleated filters may appear clean on the surface. It’s a good idea to make a habit of changing your air filter every 90 days. You can buy new air filters at your local hardware store.

Dirty Furnace

Like a dirty filter dust, debris and other foreign substances inhibit performance. Many furnaces break down due to neglect. If the exhaust flue is clogged, damage to the gas line or the housing is dirty, blower motors, heat exchangers, and other components may overheat. Scheduling furnace maintenance on an annual basis will help minimize furnace problems and extend the life of your heating system.

Check Condensate Pan

High-efficiency systems drain water. Clog drain lines, blockages in the drain, or failure in the pump may shut down these furnaces as a safety measure. Clearing the drain and hose may allow the furnace to operate safely.

Switch Inspection

On occasion homeowners inadvertently turn the power off manually on a furnace. While this may sound impossible, nearly every HVAC professional has a story to confirm this. Many modern furnaces feature additional safety switches to protect a furnace from catastrophic failure. Consulting your owner’s manual helps to troubleshoot problems. Also, check your home’s circuit breaker to make sure the breaker to your furnace hasn’t tripped.

When to Call on the Professionals

For most homeowners, this is the first step and the smart course of action. This step is important because companies like Poston Brothers provide a complete HVAC system inspection and repairs. Certified, highly trained technicians carefully diagnose issues within the heating system and provide clear answers to homeowners. Many issues should always be left to the experts including:

Cracked Heat Exchanger

Any foul odors and strange sounds during operation are signs of larger issues. If you detect any changes in your system, shutting it off at the power source may prevent these dangerous and expensive issues from developing. Because heat exchanger transfer heated gas to indoor air there is a risk of carbon monoxide and gas leaks when these parts fail.

Pilot Light

There are many variations of pilot lights depending on the manufacturer, age of the furnace, and design. Weak pilot light or a pilot light that has failed should be a reason to turn off the system.

Gas Line Issues

Like a heat exchanger, leaks in the gas line or a malfunctioning gas valve may cause a modern furnace to shut down for safety. Older furnaces with safety features may perform poorly or emit a foul odor when gas leaks occur. Any issues with natural gas and propane are an emergency and should never be ignored.

Blower Motor

Blower wheels or blower fans circulate the cold air across the heat exchanger and throughout your home. If air is not moving within your home, the electrical motor may have failed or the wiring could be damaged.

Flame Sensor

A common cause of furnaces not turning on or only running for a few seconds before shutting down is a faulty flame sensor. Neglected furnaces may build up soot and carbon. Other causes of failure are overheating and electrical issues. A professional should diagnose and replace a flame sensor.

Call Poston Brothers to keep Your Furnace Operating Safely

Furnaces are the most common forms of heating homes but heat pumps and boilers have unique issues that require professional attention. The primary cause of heating system failure is poor maintenance. Reliable and safe heating within your home is a necessity to prevent frigid temperatures from freezing pipes and causing damage to your property.

When you build a relationship with a home services contractor like Poston Brothers, seasonal inspections and tune-ups of heating systems improve efficiency, reduce wear, and avoid many of the surprise breakdowns that occur during the coldest days of the year. Call us today to schedule furnace repair or maintenance service.

Do Air Purifiers Really Make a Difference?

The popularity of air purifiers has risen sharply. From small table-top devices to larger appliances designed to treat large rooms, air purifiers work to improve indoor air quality within homes. When it comes to treating a single space or room, portable air purifiers are effective at reducing pet dander, allergens, dust and other airborne pollutants. Maybe you have noticed increased comfort from a portable air purifier near your bed or in your home office. Since indoor air pollution is a top 5 environmental health risk, the rise in popularity of air purifiers and air cleaners is not surprising.

Although portable air purifiers are effective in contained spaces, a portable air purifier is not the best device to reduce air contaminants including viruses throughout your entire home. Fortunately, Poston Brothers Heating & Cooling installs whole house air purifiers. When used properly, whole house air purifiers can help reduce airborne contaminants throughout your entire home. Many of our customers are curious about the benefits, effectiveness and value of adding a whole house air purifier into your HVAC system.

What Is the Purpose of an Air Purifier?

Air purifiers improve air quality through a number of designs. The most common systems capture particles in a filter. A whole house air purifier is effective at removing airborne dust, dirt, allergens, viruses and other pollutants. High-efficiency particulate air filters trap gaseous pollutants and volatile organic compounds. Some designs add ultraviolet light to target more bacteria and indoor toxins. The purpose of all air purifiers is improving the overall indoor air quality.

How Does an Air Purifier Work?

A whole house air purifier works by moving air entering your HVAC system through one or several filters. These filters are made out of fiberglass, paper, mesh and other filtering materials. Home air purifiers trap particles so the air is cleaner when it’s circulated back into living areas.

What Are the Benefits of Air Purifiers?

There are a number of practical benefits of air purifiers. From health to energy efficiency, air purifiers actually provide solutions for many homeowners. While you clean surfaces, vacuum carpets and wash your hands, the air circulating throughout your home contains many airborne irritants for both you and your home.

Health Benefits

Air purifiers add an additional defense for households concerned with allergies, asthma, pet dander and viruses like COVID-19. During cold and flu season, air purifiers work to provide cleaner air to every room in your home. The effectiveness of air purifiers are difficult to measure because so many other factors impact the health of your household. Debris, bacteria and allergens that collect on surfaces do not process through air purifiers. Ultimately, air purifiers incorporate filters that clean the air within your home.

Energy Efficiency

Air purifiers are highly effective at removing particles from the air. Clean air improves the efficiency of furnaces and HVAC systems. Just like when our technicians perform maintenance on your furnace and air conditioner, air purifiers remove the dust and debris that slows systems. Clean components run better and perform better over time.

Increased Comfort

Air purifiers prevent harmful particles from circulating through the air ducts and vents into your home. Many air purifiers target gaseous irritants found in household cleaners and emitted from natural gas appliances. Whether reducing VOCs, dust, allergens or viruses, improving air quality in your home adds comfort and peace of mind.

When to Contact Poston Brothers

If you are curious about the best air purifier for your home, Poston Brothers Heating & Cooling is ready to help. Our team will match you with the best air purifier to suit your home, family and lifestyle. The primary benefit of a whole house air purifier is treating all the air circulating through your home. Discover how effective air purifiers can be for you.

How Often Should You Be Cleaning the Air Vents in Your Home?

Air vents are one of the most visible components of your home’s heating and cooling system. The most basic definition of air vents is any opening that moves air in and out of a space. Depending on the design of your home and HVAC system, vents may appear on the ceiling, floors and along the walls throughout your home. Since vents deliver air into all the rooms of your home, understanding how your HVAC system works and how to clean vents is important.

Understanding Air Vents and Ducts

Consider your furnace and air conditioner as the heart of your heating and cooling system. Air is treated within these appliances then dispersed through ductwork like veins stretching throughout your home. Finally, air is delivered through air vents like arteries into the rooms of your home. While an air duct is fixed, each vent can be adjusted to control air flow into individual rooms. Keeping all of these components clean and maintained is vital to reducing indoor air pollution.

Furnaces, air conditioners and heat pumps should be maintained before the start of each season. Each of these major appliances benefit from cleaning, calibrating and preventive maintenance. Outdoor air contains moisture, dust and debris that can greatly impact the performance and durability within these systems. Cleaning the area around air conditioners is important for performance. Furnaces feature air filters to improve indoor air quality before moving air into ducts and through vents. The best way to improve indoor air quality is scheduling annual maintenance on your furnace and air conditioner.

Air ducts are fixed throughout your home. Metal ducts and flexible ducts are most commonly used to carry treated air to your home’s living areas. Clean air ducts improve the overall comfort within your home. A light amount of household dust is expected to collect in any air duct. Air ducts professionally cleaned may reduce the risks associated with pet dander, mold growth and excess ducts from your home. While there is no definitive study, frequent duct cleaning may improve indoor air pollution for sensitive family members with allergies, asthma and other respiratory concerns.

One definitive rule states duct cleaning should be performed by a professional when excess dust builds up in the system; vermin and other pests have been present in and around ducts; and any time moisture contaminates your duct work. There is a high risk of biological contaminant growth when excess dust and water collect. Anytime visible mold growth appears on vents or ducts, you should contact a heating and cooling professional for proper cleaning. Mold contamination and mold spores pose serious health problems for any family member.

While properly maintained furnaces, air conditioners and ducts require professional heating and cooling professionals, clean air vents are part of regular house cleaning. Removing dust and any other debris from vents will improve comfort, reduce airborne irritants and protect the entire system.

Different Types of Vents

Throughout your home, you may find two types of vents. Once you understand what each type of vent does, you will understand why cleaning vents is important.

Supply Vents

Supply vents deliver air into each room. These are the rectangular vents air enters into rooms. Common sizes include 4×10″, 4×12″, 6×10″ and 6×12″. Controlling how air moves throughout your home is important to calibrating the system. Since most supply vents can be adjusted to increase and decrease the flow of air, professional technicians can improve overall home comfort during maintenance. Adjustments, vent covers and other techniques can be used to improve energy efficiency and save on energy bills. A clean supply vent reduces dust and debris from circulating throughout the room.

Return Vents

Return vents draw air from rooms and send it back to the air conditioning or heating system. As air enters your home through supply vents, existing air moves out of your home through return air vents. This maintains air pressure in your home. When properly installed and calibrated, return vents improve efficiency and save on energy bills.

Cleaning Vents

Cleaning your home should include cleaning both supply vents and return vents. Just like removing dust and debris from surfaces and floors, cleaning vents improves indoor air quality. Air will move freely through clean supply vents into rooms and stay clear when exiting through clean return vents. Cleaning vents helps you notice sudden increases of dust or moisture. Any moisture on vents, especially signs of mold, is a cause for alarm. You should contact our professional services at the first indication of humidity. Excessive moisture may be helped by adding a dehumidifier to your home. Sudden increases of dust on vents may indicate your ducts should be professionally cleaned to address poor ventilation.

When Poston Brothers Heating and Cooling can Help

Since you cannot see the ductwork within your home, watch for warning signs that you need our professional services. If you see excess dust in sunlight near windows, along register vents or other surfaces, then you may need cleaning of the interior ductwork. If your air filter is clogged or excessively dirty, there could be damage to your ductwork. Rising energy usage may indicate clogged systems or air ducts. Musty smells in your home indicate high moisture levels. Any other signs of mold or vermin should prompt a call to Poston as well.

Finally, scheduling regular maintenance with our team of skilled technicians is the best way to keep vents clean, adjusted and ensure healthy indoor air quality. You can ask our technicians the best way to clean air vents in your home. We also calibrate your HVAC system during regular maintenance. This means our team checks to make sure vents are properly adjusted, return vents are clean of obstructions and air flow is optimized throughout your home. From cleaning air vents to installing complete systems, Poston Brothers Heating & Cooling is an expert in every HVAC component.