When and How to Change Your Furnace Filter

December 01, 2015

Taking care of your furnace can help more than you’d think in the time in between furnace service appointments. One of the most basic, and crucial, ways to care for your furnace lies in switching out your furnace filter. Having a filthy air filter could contribute to a variety of negative concerns for your heating and cooling system, its efficiency, and ultimately, how much your energy costs are every month.

So what goes in to determining when you should replace your furnace filter?

  • Type of filter: the two most common filter sizes are 1 inch and 3 inch filters. 1 inch filters usually need to be switched out every month and 3 inch filters ought to be replaced every three months, dependent on the recommendations of the filter maker.
  • Home habits: if you have pets in your home, it could make sense to switch out your filter more often as a result of pet dander. If you have someone in the house that suffers from allergies or asthma, contemplate switching out your home’s air filter more often to help ease their symptoms.

Now you’re probably wondering how to change your furnace filter. Obviously this will change depending on what furnace you have, but typically: 

  • Open or pull off the air filter panel near the bottom of your furnace to uncover an open compartment.
  • On the top of that open compartment is where your furnace filter is resting on two metal lips.
  • There will be a little space to move your filter back and forth that allows you to pull down one end of the filter and pull it out of the compartment.
  • When putting in the new filter, look at the perimeter of the filter for an arrow that specifies the air flow direction, to be sure you’re installing the filter in the right direction. In most cases, the arrow should point towards the main part (or top) of the furnace. 
At Strogen's Service Experts Heating & Air Conditioning, 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 603-923-4570 or arrange an appointment with us online.