When and How to Change Your Furnace Filter

December 01, 2015

Caring for your furnace can help more than you’d think in the time in between furnace service appointments. One of the easiest, and essential, ways to care for your furnace is in changing your furnace filter. Having a clogged air filter can contribute to a variety of negative issues for your heating and cooling system, its efficiency, and ultimately, how much your energy expenses are every month.

So what goes in to determining 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, depending on the recommendations of the filter manufacturer.
  • Home habits: if you have pets in your home, it may make sense to change your filter more often due to pet dander. If a family member suffers from allergies or asthma, think about switching out your home’s air filter more often to help ease their symptoms.

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

  • Open or pull 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 your furnace filter is resting on two metal brackets.
  • There will be a small amount of space to move your filter back and forth that allows you to bring down one end of the filter and take it out of the compartment.
  • When installing the new filter, check the perimeter of the filter for an arrow that indicates the air flow direction, to make sure you’re installing the filter in the proper direction. In the majority of cases, the arrow should point towards the main part (or top) of the furnace. 
At Service Experts Heating & Air Conditioning, we’ll change 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 407-329-7661 or set up an appointment with us online.