Yes, a dirty air filter can cause your AC to not cool
If you've noticed your home feels a bit stuffy lately, you might be wondering if a dirty air filter can cause your AC to not cool like it used to. The short answer is a big, resounding yes. It's actually one of the most common reasons why an air conditioner starts blowing lukewarm air or struggles to keep the temperature down during a heatwave. It's a frustrating problem, but the good news is that it's also one of the easiest and cheapest things to fix yourself. ...