How Often Should You Change Your Furnace Filter


If you own a home, you’ve likely heard you need to regularly change the furnace filter. The question is whether that’s necessary and, if so, how often. The answer depends on your situation, but usually, you need to change the filter every three months.

Why Furnace Filters Need Regular Changes

The furnace filter’s primary purpose is to keep dirt, dust, and other debris out of your furnace. This keeps your furnace running efficiently and worry-free. If you don’t change the filter, it becomes clogged. This blocks airflow, which causes your furnace to work unnecessarily hard and eventually shortens its lifespan. The filter also improves your home’s indoor air quality.

Addario’s Services of Woburn, MA, offers an affordable maintenance service that includes furnace filter checks and replacements. We’ve been helping families in this area with their heating needs since 1998.

Do You Have Pets?

If you have pets, you need to change your filter more frequently than every three months. Pets release pet dander and fur that inevitably ends up in the furnace filter. If you own a pet, the rule of thumb is to change the furnace filter every two months.

Do You Have Allergies?

People who have allergies to things like pet dander, pollen, and grass need to change their filters every month. Not doing so will lead to an endless cycle of sneezing, coughing, and runny nose. If someone has severe allergies, they may need to change the furnace filter even more often.

Do You Live Alone?

If you live alone and have no pets, you may just need to replace your furnace filter every four to six months. This is also true of vacation homes. Without air contaminants getting regularly stirred up, your furnace filter lasts longer.

At Addario’s Services, we install, repair, and maintain heaters, air conditioners, and ductless mini-splits. We also offer a wide range of plumbing, drain, sewer, and electrical services. Our company can even help you with duct cleaning and bathroom makeovers. Please call today to schedule an appointment.

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