Why Is My AC Not Cooling? 7 Causes & Fixes for NJ Summers
It's the middle of a hot, humid New Jersey summer and your air conditioner is running — but the house won't cool down. Few things are more frustrating. Before you call for an emergency HVAC repair, it helps to know the most common reasons an AC stops cooling and what can actually be done about each one. Here are 7 causes and what to do about them. 1. Dirty Air Filter This is the most common cause and the easiest fix. A clogged air filter blocks airflow, which makes your AC work harder while cooling less effectively. If you haven't changed your filter in the last 1 to 3 months, start here. Replace a disposable filter or clean a reusable one. Many NJ homeowners see an immediate improvement after this single step. 2. Thermostat Set Incorrectly It sounds simple, but check your thermostat settings before anything else. Make sure it's set to "cool" and not "fan only." Fan mode circulates air without cooling it, which can feel like the AC isn't wor...