The Impact of Dirty Air Filters on HVAC Efficiency

Most HVAC systems are extremely reliable, given the task they’re called upon to perform. They run almost continuously during peak times of the year and help you maintain comfort in your house whether the temperatures outside are high or low. All your heating and cooling system asks in return is a regular maintenance schedule and a little TLC. Fortunately, there are many highly skilled heating and cooling companies in Marietta, GA, who can help make sure that your HVAC system remains in optimal condition through regular service and maintenance.


Technician Changing HVAC Filter However, one of the simplest maintenance tasks doesn’t even require assistance from an HVAC maintenance company. Even a marginally handy homeowner can change the air filter in the HVAC system regularly. Despite the ease of the task, many people neglect it, and that can have dire consequences for your HVAC system’s performance and longevity. Keep reading to learn how a dirty air filter can impact the efficiency of your HVAC system.


Impacts Performance


When the air filter is dirty and clogged, that means that the blower that drives air through your system can’t do its job as effectively. Clogged filters create restricted airflow, and restricted airflow translates into systemic issues with distributing the conditioned air efficiently throughout the house. In turn, that creates hot and cold spots within your residence, which can cause your AC or heater to work overtime to balance the temperature in each room of the house. Unnecessary operation of the AC or heating unit wastes energy, thus affecting your energy efficiency metrics.


Increases Energy Usage


Because a clogged filter causes the blower to work harder, it will run longer per cycle and use more energy to accomplish the same result. The filter can also affect energy usage through diminished performance. Again, when the conditioned air isn’t evenly distributed throughout the home, the thermostat may trick the HVAC system into running longer and cycling more frequently to reach the temperature set point, thus wasting energy.


Increases Humidity


A clogged air filter can hamper the ability of your HVAC system to regulate humidity in the home. Therefore, the air inside your home won’t feel as comfortable, even if the temperature on the thermostat is attained. Excess humidity in the air makes your entire system work harder and increases the likelihood of residents turning the thermostat down to a lower set point in an effort to make the air more comfortable.


Comparing HVAC Filters Impacts Air Quality


Your HVAC system has an air filter for a reason. That simple filter protects your system and your health, as it filters out all kinds of particulate matter that gets sucked into your interior air. Pathogens such as dirt, dust, dander, mold spores, pollen, and germs hang in your interior air, and they are captured by the filter when air circulates through the HVAC system. When the filter becomes clogged, it can’t do its job. That means that those pathogens and irritants can be distributed throughout your home and detract from your interior air quality. Furthermore, they can build up on critical components of your system, leading it to function less efficiently until it’s properly cleaned by a trained technician.


Causes Evaporator Freezing


When your air filter becomes clogged during the summer months, it can lead to evaporator freezing because there is insufficient airflow over the evaporator to dry the condensation that forms. Because the evaporator is cold, that condensation then freezes, which limits the effectiveness of that component and impacts the overall operation of your system.


If you only do one thing to maintain your HVAC system on a monthly basis, make sure that you change the air filter regularly to prevent thee issues described above. If you want your system to provide you with reliable heating and air in Marietta, GA, make sure that the filter remains unclogged. To learn more about the impacts of a clogged filter on your HVAC system’s efficiency, contact Shriver Mechanical at (770) 975-1927.