How Often Should You Consider Changing the Air Filter on Your Furnace?

furnace filter dirty replace pasterkamp repair

Although you might have thought that the same advice fits everyone who owns a furnace, the question of how often to change the air filter is not necessarily as easy to answer as it would seem.


Of course, most people will tell you that waiting about 3 months before changing a newly replaced air filter is pretty much standard, but that doesn’t apply to every household. Owning pets, having an allergy and having a filter model that’s cheaper and of a lower quality will all become factors that should influence your choice. Typically, a lower quality filter has to be replaced more often, and if you don’t have pets you can wait longer before replacing it.


An average quality filter in an average sized home without pets should typically be changed once every 90 days. If you have a dog or a cat, then the pet hair that gets stuck in your filter should make you think about replacing it within 60 days or less. Also, if you have multiple pets or someone in your house suffers from an allergy then you might consider replacing your furnace filter in as little as 30-45 days.


It could also happen that your home isn’t used all year, or that you just bought it as a vacation home. If that’s the case, you can even avoid replacing your old filter for 6-12 months depending on how often you use your vacation home and whether or not you use it extensively during the winter or summer.  For filter replacement tips and also furnace repair look at