When and How to Change Your Furnace Filter

December 01, 2015

Maintaining your furnace can help more than you’d think in the time in between furnace service appointments. One of the easiest, and crucial, ways to take care of your furnace lies in replacing your furnace filter. Having a filthy air filter can contribute to a variety of negative problems for your heating and cooling system, its efficiency, and ultimately, how much your energy expenses are each 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 normally need to be changed every month and 3 inch filters should be swapped out every three months, dependent on the recommendations of the filter manufacturer.
  • Home habits: if you have pets in your home, it could make sense to change your filter more often as a result of pet dander. If a family member deals with allergies or asthma, contemplate switching out your home’s air filter more frequently to help with their symptoms.

Now you’re probably wondering how to swap out your furnace filter. Inevitably this will change depending on what furnace you have, but normally: 

  • Open or take off the air filter panel around 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 pull down one end of the filter and take it out of the compartment.
  • When installing the new filter, look at the perimeter of the filter for an arrow that shows you the air flow direction, to be sure you’re installing the filter in the right direction. In the majority of cases, the arrow should point towards the main part (or top) of the furnace. 
At Strand Brothers Service Experts, we offer membership plans that include swapping out standard furnace filters. Give us a call today at 512-596-1257 or arrange an appointment with us online.