How Often to Change HVAC Filter?


Do you know how important it is to change your HVAC Filter? If not, then nothing to worry about! We got it all covered for you in this article. 


HVAC filters are used in your home’s heating and cooling system. They play an essential role in the formation and management of the facility’s temperature and air quality. In addition, they remove dirt, allergies, animal hair, and other microscopic particles from the air, preventing you from inhaling them. 

In essence, your HVAC air filter and Furnace filters may trap airborne pollutants and prevent them from being circulated throughout your home. The actual question is how frequently you should change them.

Why Should You Change Your HVAC Filters?

One of the most crucial things you can do to take good care of your HVAC system is to change your air filter regularly. This keeps everything running smoothly and reduces your energy expenditures. Unfortunately, many homeowners ignore this duty for extended periods, resulting in higher energy expenditures and increased maintenance requirements.

The air filter eventually receives all the air circulating through your HVAC system to heat or cool your house. This is why it is so very important to clean and replace your air filters periodically. Unclean, obstructed air filters may:

  • Cause damage to the equipment and cause HVAC system problems.
  • Reduce the airflow within the HVAC system to make the fans work even harder and longer.
  • Pollutants and particles are not being eliminated as effectively as they should be, returning them into the air that circulates in the home.
  • Makes the ductwork in your home become contaminated.

Factors That Affect the Lifespan of The HVAC Filters

The typical lifespan of an 12x12x1 Air filter is influenced by a few elements, such as the filter’s quality, how often it is used, and the kind of air conditioner used.

The filter’s quality has the most role in deciding how long it lasts. Compared to a low-quality filter, a better-quality filter such as a Merv 8, Merv 11, or Merv 13 from Mervfilters will last longer. Also, a filter that is being used more frequently will require replacement. 

The filter’s longevity depends on the air conditioning system used. For example, a window air conditioner will last longer than a central air conditioner. Lastly, and probably the most important factor, is the size of your home. Your furnace and air conditioner will need to circulate less air to achieve the same temperature change if you live in a smaller place, which might result in fewer filter replacements. However, smaller appliances meant to cool small spaces sometimes have smaller filters, so you might need to replace the filter more frequently than you would in a bigger home.


Choose a high-quality filter from renowned brands like Mervfilters and replace it following the air filter manufacturer’s recommendations to ensure your HVAC filter will last as long as possible and offers a healthy service throughout its lifetime.

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BSV Staff

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