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How Important Are Air Filters, Really?

Updated: Jul 17, 2023

According to HVAC system manufacturers, HVAC experts, and filter manufactures, replacing your A/C filer every 30-90 days is imperative to improve and maintain the best indoor air quality, as well as to maintain the maximum efficiency of your HVAC system. But, what does your filter actually do and why is it so important to regularly replace them?

The modern air conditioner was invented in 1902 and today’s modern air conditioners still operate on the same basic principles. Controlling the temperature indoors has helped evolve business practices and modern living inside homes all around the world. Air conditioning systems include a number of components and do more than just cool or warm the air inside, however. Air conditioners provide cold or warm air inside your home or enclosed space by actually removing unwanted heat and humidity from the indoor air and transfers the unwanted heat and humidity outside.

Where Does The Air Come From?

The air that is brought into the HVAC system enters the return vents, passes through the air filter, which then recirculates through the HVAC system, ultimately recirculating back into the air you breathe inside your home. The air filter captures the pollutants and allergens being passed through to prevent the collection of those allergens and pollutants from collecting on the evaporator coils inside your furnace.

Without the filtration of the air entering your HVAC system, the allergens and pollutants collect on the evaporator coils. As the coils become more congested, the harder the system has to work to cool or heat your home. The evaporator coils are among the most important components of your system and the harder the system has to work, the more electricity is consumed, and the faster important components and parts break down leading to unwanted, and sometimes unnecessary, high-cost repairs.

What Happens If...?

One of the most common reasons for poor indoor air quality and HVAC malfunction is the failure to replace the air filters every 30-90 days. As time goes on, your filters begin to break down, which then begins to collect less of the pollutants passing through your HVAC system. Without regularly scheduled filter replacements, dust, mold, and other particles are entering into your air and reducing your indoor air quality. This also means that areas of your home may not be getting the airflow they need, reducing your home’s comfort level. The other big risk of neglecting to change your air filter is a system overheating or freezing up.

Preventative Maintenance

If regularly scheduled filter replacement has become too much of a hassle, it's time to schedule your personalized A/C filter replacement plan with Fresh Air Matters. Not only do we provide the filters, but we also replace them for you, and clean your return vents every 30-90 days. With Fresh Air Matters, you never have to worry about replacing your air filters or cleaning your return vents again. We do it for you! Our A/C filer replacement plans help improve and maintain the best indoor air quality, as well as helps to maintain the maximum efficiency of your HVAC system. To schedule your A/C Filter Replacement Plan, simply go to and select which plan best fits your needs, or contact us for more information.

📞 (469) 469-1852

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