Maintaining your furnace can help quite a bit in the months in between furnace service appointments. One of the most basic, and crucial, ways to care for your furnace lies in changing your furnace filter. Having a clogged air filter could contribute to a variety of adverse concerns for your heating and cooling system, its efficiency, and ultimately, how much your energy costs are month after month.
So what goes in to deciding 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 normally need to be switched out every month and 3 inch filters ought to be swapped out every three months, depending on the recommendations of the filter manufacturer.
- Home habits: if you have pets in your home, it could make sense to switch out your filter more often due to pet dander. If someone in your family suffers from allergies or asthma, consider changing your home’s air filter more frequently to help ease their symptoms.
Now you’re likely wondering how to replace your furnace filter. More than likely, this will differ depending on what furnace you have, but normally:
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- Open or take 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 you’ll see your furnace filter resting on two metal lips.
- There will be a little space to move your filter back and forth that allows you to remove one end of the filter and take it out of the compartment.
- When adding the new filter, inspect the perimeter of the filter for an arrow that specifies the air flow direction, to make sure you’re installing the filter in the correct direction. In the majority of cases, the arrow should point to the main part (or top) of the furnace.