We’ll say this one first so we don’t have to say it later:
Lots of bad things can happen if you don’t change your air filter regularly.
Short-cycling, frozen coils, low airflow… You name it. The air filter is crucial to the performance of your air conditioner, and neglecting to replace it can have you making a surprise call to an air conditioning repair service in San Bernardino, CA. That’s about all the average homeowner needs to know about their air filter. However, if you really want to understand your filter in an out, here’s what else we can tell you: