Reasons Your AC Isn't Working

A malfunctioning air conditioner can be a source of frustration, especially on hot days when you need it most. Property owners in Auburndale, Haines City, Lakeland, Winter Haven, FL and beyond often run into issues but aren’t sure why their AC stopped working. The good news? Many problems are common and manageable with a little troubleshooting or professional support. Here at United Refrigeration & Air Conditioning, we're happy to help inform you about some common reasons your AC might not be working and how you can address them.

Clogged Filters

Clogged air filters are perhaps the most common culprit behind air conditioning troubles. Over time, dirt and debris can build up and block airflow, leading to reduced cooling efficiency, or even no cooling at all.

Solution: Replace the air filter every 1-3 months to improve airflow and ensure your AC runs effectively.

Low Refrigerant Levels

Your air conditioner relies on refrigerant to cool the air. If these levels are too low due to a leak or improper installation, your system will struggle to do its job effectively.

Solution: Call a licensed AC repair technician to detect and repair refrigerant leaks or get the refrigerant refilled.

Thermostat Malfunctions

Sometimes, the problem isn’t with your AC unit itself, but rather the thermostat. Incorrect settings or technical malfunctions can prevent your system from powering on or cooling properly.

Solution: Check your thermostat settings to make sure it’s on “Cool” mode, and replace the batteries if needed. If the problem persists, you may have to look into upgrading to a new thermostat.