Changing your HVAC filters might not be the most exciting home task, but it’s definitely one of the most important for keeping your system running smoothly and your air clean. So, how often should you actually be swapping them out? The general rule of thumb is every 1 to 3 months, but the right schedule really depends on your home and lifestyle.
If you live alone, don’t have any pets, and your system doesn’t run constantly, you can probably get away with changing the filter every three months. But if you’ve got a big family, pets that shed, or allergies to deal with, you’ll want to check that filter more often—maybe even once a month. The more dust, hair, and debris floating around your home, the quicker that filter fills up.
Seasonal changes can also affect how dirty your filter gets. During peak heating and cooling times, like summer and winter, your HVAC system is working harder, which means your filter is collecting more particles. It’s a good idea to check it monthly during those high-use periods, even if you don’t end up replacing it every time.
A clogged filter doesn’t just mess with your air quality—it makes your system work harder, which can lead to higher energy bills and even breakdowns. A fresh filter keeps the airflow strong, your energy usage down, and your home feeling just right.
Set a reminder on your phone or write it on your calendar—whatever helps you stay on top of it. Keeping your filters clean is a small thing that makes a big difference for both your comfort and your HVAC system’s lifespan.