When and How to Change Your Furnace Filter

December 01, 2015

Maintaining your furnace can go a long way in the months in between furnace service appointments. One of the easiest, and crucial, ways to maintain your furnace is by changing your furnace filter. Having a filthy air filter could contribute to a number of unfavorable problems for your heating and cooling system, its efficiency, and ultimately, how much you’re spending on your energy bills every month.

So what goes in to deciding when you should switch out your furnace filter?

  • Type of filter: the two most common filter sizes are 1 inch and 3 inch filters. 1 inch filters typically need to be switched out every month and 3 inch filters ought to be replaced every three months, based on the recommendations of the filter manufacturer.
  • Home habits: if you have pets in your home, it could make sense to replace your filter more often because of pet dander. If someone in your family deals with allergies or asthma, consider replacing your home’s air filter more frequently to help ease their symptoms.

Now you’re likely wondering how to change your furnace filter. More than likely, this will change depending on what furnace you have, but usually: 

  • Open or take off the air filter panel near the bottom of your furnace to reveal an open compartment.
  • On the top of that open compartment is where you’ll see your furnace filter resting on two metal brackets.
  • There will be a small amount of space to move your filter back and forth that allows you to remove one end of the filter and pull it out of the compartment.
  • When adding the new filter, look at the perimeter of the filter for an arrow that shows you the air flow direction, to make sure you’re installing the filter in the proper direction. In most cases, the arrow should point at the main part (or top) of the furnace. 
At Bryant Heating & Cooling Service Experts, we’ll swap out standard one-inch furnace filters as part of our regular furnace service Precision Tune-up or PLUS Maintenance Agreement service. Give us a call today at 226-773-3357 or set up an appointment with us online.