February 20, 2020

In this step-by-step guide, we’re going to show you how to replace the air filter in your furnace. Here are five easy steps that you can follow to get the job done.

1. Set the Furnace Thermostat to “Off”

The first thing to do is simply set the thermostat on your furnace to “off.” Alternatively, you can disconnect all power to the furnace if you’d like to be extremely safe.

2. Find Your Furnace Air Filter and Its Condition

The second thing you’ll want to do is to locate your furnace’s air filter. Check out your furnace’s manual. It should tell you exactly where the air filter is located.

If that isn’t an option, try removing the cover on the furnace. This should be on the front or the side of the furnace. When you find it, simply pull up to remove it.

If your filter has a plastic frame, it does not need to be changed. It can simply be rinsed off in the tub or in your sink.

3. Remove the Old Air Filter

Remove the old air filter. Make sure to note what way the airflow arrow that’s on the filter is going. It’ll be written on the frame. This is important because you’ll need to install your new air filter with the airflow arrow going in the same direction.

4. Identify the Correct Size of Your Furnace’s Air Filter

Examine the outside of your air filter to see what size it is. It should be written on the frame. If it isn’t, measure your old air filter with a tape measure, and record the dimensions.

5. Install Your New Air Filter and Turn Your Furnace “On”

Insert your new filter into your furnace. Make sure the airflow arrow is pointing in the same direction as it was on your old air filter. Finally, just turn your furnace “On.”

Air, Plumbing & Heating Solutions would love to have the opportunity to serve you. We have 33 years of experience assisting customers in Randallstown and Baltimore County and offer heating, air conditioning, and plumbing services. We are extremely proud to have received the Angie’s List “Super Service Award” for 12 consecutive years. Contact us today if we can be of service!

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