When the mercury rises outside, nailing down why your AC is not cooling becomes a top priority. There are eight common reasons why this happens, including dirty filters, and some of which you can fix ...

We did a piece on possible reasons why your window air conditioner isn't cooling, now it's time for central air conditioners. When your AC runs but the house stays hot, the first thing to check is ...

Check simple issues first like thermostat settings, dirty filters, or blocked vents. Look for leaks, blown capacitors, or electrical problems. Call an HVAC pro for anything complex or needing special ...