How to Change an Air Conditioner Filter

Learn how to change your home AC or furnace filter. Watch our short video or follow the step-by-step guide in the transcript below

Proper maintenance will ensure good air quality in your home, increase the life span of your system, and consume less energy - lowering your bills. Your filters should be changed every 30 to 90 days depending on the type and efficiency of your filter. However, according to Energy Star, filters should be changed every month during peak summer and winter months when your HVAC system is operating at its highest capacity. Remember, regular maintenance of your home's cooling and heating system is essential to ensure it operates efficiently.

If you're wondering, "Where is my furnace filter located?" we've got you covered. The short, animated video above shows the most likely location of your furnace filter and then walks you through how to change a furnace filter.

Video Transcript for How to Change an Air Conditioner Filter and a Furnace Filter

How to install your air filter

Air Return Vent or Air Handler/Furnace

If your home has an air return vent, locate your air return vent.

  1. Turn the unit off. Turning this off prevents the air from blowing dust and grit into your system.
  2. Open up your vent and remove the used filter.
  3. Make sure the Air Flow Arrows are pointing toward the HVAC Unit.
  4. Install the new filter and close your vent.
  5. Turn the unit on and you're done!

If your home has an air handler or furnace, the air filter can be found within or near the air handler/furnace.

  1. First, turn the unit off.
  2. Locate the area which houses the air filter near the air supply and remove the panel.
  3. Then removed used filter.
  4. Check the Air Flow Arrows and install the new filter. Make sure the Air Flow Arrows are pointing toward the HVAC unit.
  5. Replace your panel.
  6. And finally, turn the unit on.

Enjoy clean air when changing your air filter every 60-90 days.

Before you change your air filter, make sure you have the right sized filter. If it's not printed on the filter cover, check out our Helpful Tip on how to measure your air filter. Learn more about ensuring clean air for your home or business in our Helpful Tips section.