Taking care of your furnace can go a long way in the time in between furnace service appointments. One of the simplest, and essential, ways to care for your furnace is in changing your furnace filter. Having a filthy air filter can contribute to a variety of unfavorable issues for your heating and cooling system, its efficiency, and ultimately, how much you’re spending on your energy bills each month.
So what goes in to consideration when you should change 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 changed every month and 3 inch filters should be replaced every three months, dependent on the recommendations of the filter company.
- Home habits: if you have pets in your home, it may make sense to replace your filter more often due to pet dander. If you have someone in the house that has allergies or asthma, contemplate changing your home’s air filter more regularly to help potentially decrease their symptoms.
Now you’re likely wondering how to change your furnace filter. Obviously this will vary depending on what furnace you have, but usually:
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- 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 lips.
- There will be a little space to move your filter back and forth that allows you to bring down one end of the filter and remove it from 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 correct direction. In most cases, the arrow should point towards the main part (or top) of the furnace.