You know the air filter, right? That rectangular piece of cardboard and mesh that they shoved inside your HVAC system when it was installed? A good contractor will have informed you that it needs to be changed regularly to keep your system running efficiently. But that doesn’t tell you what the air filer’s purpose is, how often you need to change it, and what happens if you don’t change it.
In this post, we’ll go over the most common air filter questions so you can understand the importance of them: