How Often Should I Change My Furnace Filter?

Schedule Your Furnace Air Filter Delivery


This is a question we are asked often. The answer truly depends on your living environment and the type of filter you have. Here are some circumstances that will increase the frequency of which you need to change your filter:

  1. Pets in the home
  2. Large number of people occupying the home
  3. Allergy sufferers in the home
  4. Those with respiratory ailments in the home
  5. The level of pollution/construction around the home
  6. Lower quality air filters

Typically for a basic 1” filter you should be changing these out every month or every other month. If you fall into the list above, we definitely recommend new filters monthly.

For a higher rated filter, like a media filter or 4”/5” pleated filter, we recommend every 4-6 months.

To figure out the efficiency of your current filter you can look up the MERV rating. MERV stands for Minimum Efficiency Reporting Value and ranges from a score of 1 to 20. This tells you the size of particles an air filter is designed to clean out. A lower MERV rating means only larger particles are captured. The higher the MERV rating means the more particles that are being filtered out.

Lower MERV ratings are less efficient to catch particles, but do allow more air to go through your filter, which can improve the operation of your HVAC system.

For anyone who relates to our above list, we recommend a media air cleaner, which carries a MERV rating of 16. These will clean your air very thoroughly and require the least maintenance from you.

If you have issues remembering to change your filter, we have local furnace filter delivery service available! Just choose your filter type, size and frequency of ordering and your filter will be shipped to you when it’s time to change it out.

Read more about our filter delivery program by clicking here.

If you have questions about which air filter might be right for your home HVAC system, please feel free to give us a call at 513-620-4822.

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Filter Rating Cheat Sheet