How Often Should St Louis Homeowners Replace Furnace Filters?

Jessica Primeau • November 4, 2022

Furnace filters are an important part of your HVAC system. They help to remove contaminants from the air and improve the quality of the air in your home. Additionally, replacing or cleaning your furnace filters on a regular basis can help to improve the efficiency of your HVAC system and prevent problems down the road. So how often should you be replacing or cleaning your furnace filters?

Tips for Keeping Your Filters Fresh:

  1. Replace 1″ filters every month.
  2. Clean or replace media filters once a year, possibly twice a year depending on your home.
  3. Set an alert on your calendar to remind you to replace or clean your filters every month/year.

Replacing furnace filters promotes good air flow and prevents stress on blowers. By regularly replacing or cleaning your furnace filters, you can extend the life of your HVAC system. Clean furnace filters also improve the quality of the air in your home!

How to Change Your Furnace Filter

  1. Find the air filter – in most homes, the air filter is located in the return air duct or near the furnace.
  2. Remove the old air filter – carefully remove the old air filter and dispose of it properly.
  3. Choose the right replacement filter – measurements are often listed on the side of the filter itself
  4. Install the new air filter – insert the new air filter into the housing and make sure it is properly secured.

Infographic titled “Step by Step: Change Your Air Filter” with four numbered installation steps.

Contact Us Today for Help with Your Furnace Filters

Furnace filters play an important role in your HVAC system and should be replaced or cleaned on a regular basis. Regularly replacing or cleaning your furnace filters will promote good air flow, prevent stress on blowers, and extend the life of your HVAC system. In addition to regularly changing your air filters, getting an annual or bi-annual furnace maintenance check from AAA is a great way to ensure that your system stays in top shape.

If you have any problems with the furnace system in your St Louis home, give the technicians at AAA Home Services a call. We’ll clean and check your furnace to make sure it is running at 100% efficiency. Book your appointment today with our online form!

< Older Post Newer Post >
Technician inspecting a home heating system in a utility room

Your Heat Pump Has Two Jobs. Here's How to Tell If It Can Handle Both This Winter.

By AAA Home Services Team • September 15, 2026
Is your heat pump ready for a Missouri winter? Learn the warning signs of heat pump trouble and when to call for heat pump repair in St. Charles County.

Why American Standard HVAC Systems Keep Showing Up in St. Charles Homes

By AAA Home Services Team • September 14, 2026
American Standard HVAC systems are a common choice in St. Charles County. Here's what the brand offers and why the dealer you choose matters just as much.
AAA Home Services electrician installing a ceiling fixture in a home

What Happens When You Add Too Many Things to an Old Electrical Panel

By AAA Home Services Team • September 12, 2026
Old panels weren't built for modern electrical loads. Learn the signs your St. Charles home's panel is overloaded and when it's time for an upgrade.

The Slow Drain Every Homeowner Ignores Until It Backs Up

By AAA Home Services Team • September 10, 2026
Slow drains don't fix themselves. They get worse. Here's why homeowners across St. Charles County should take drain cleaning seriously before a backup hits.
Show More