Every part of your air conditioning system plays its own unique role. While some roles, like the one your refrigerant plays in the heat transfer process, are mandatory, other parts are still important in the overall scheme of things. It is important to know this because the air filter that is used for your air conditioner is often underestimated in how important it really is.
The air filter isn’t meant to help keep dust out of your house. Instead, its key purpose is to help keep dust and debris out of the inside of your HVAC system. This is important because, if your HVAC didn’t have that filter, all of that debris would get into your system to cause a variety of issues.
Dirt can hurt! This is why you should never underestimate the importance of your system’s air filter.