Do All HVAC Systems Need Filters?

When it comes to commercial and residential cooling and heating systems, it is essential to have a filter in place to remove any impurities before the air is sucked into the system and then exhausted back into the areas that need to be heated or cooled. While an HVAC system can technically operate without a filter, it is not recommended. All central heating and cooling systems must have an air filter, although it may be more difficult to locate in some HVAC units than in others. Additionally, some HVAC systems have a return vent in each room, which means there could be an air filter behind each of those return grilles.

Do all heating and cooling systems need an air filter?

The answer is yes.

All heating and cooling systems must have at least one air filter, although some may have more than one. It can be difficult to locate in some HVAC systems, but you can usually find the air cleaner in the return air duct. When the filters become clogged, particles escape through the filter and enter the mechanical and electrical components of the air conditioning system. Now that you know why you have two air filters in your HVAC system, let's identify where they are located. Contrary to popular belief, the purpose of HVAC air filters is not to improve the air quality in your home.

As your HVAC system draws air into the return grilles and ducts, the air passes through the air cleaner. To ensure that your HVAC system remains efficient, we recommend changing the filter at least every 90 days. This will help keep your system running smoothly and efficiently.

Nina Siegwarth
Nina Siegwarth

Certified foodaholic. Incurable web specialist. Incurable web advocate. Friendly internet specialist. Evil music aficionado.

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