If your AC is running but not cooling your Boca Raton home, don’t panic — this is one of the most common calls we get. Most of the time it’s a quick, affordable fix. Prime Air diagnoses and repairs AC not cooling issues same-day throughout Palm Beach and Broward County. 170+ five-star reviews | Licensed CAC1823548 | Call (561) 855-0659 now.

Top Reasons Your AC Is Running But Not Cooling

1. Dirty or Clogged Air Filter ($0–$30 fix)

A clogged filter blocks airflow and causes the system to run inefficiently — or freeze up completely. Check your filter first. If it’s gray and matted, replace it. This is the one fix you can do yourself. If a new filter doesn’t fix it, call us.

2. Failed Capacitor ($150–$300)

The #1 most common AC repair in South Florida. The capacitor starts your compressor and fan motors. When it fails, the system runs but can’t compress refrigerant — so air blows but it’s not cold. Common symptom: AC turns on, outdoor unit makes a humming sound but fan doesn’t spin. Fast, affordable fix.

3. Low Refrigerant / Refrigerant Leak ($200–$1,500)

If refrigerant is low, your AC can’t cool properly. You’ll notice gradually worsening cooling performance, ice on the refrigerant lines, or hissing sounds. Low refrigerant always means there’s a leak — recharging without finding and fixing the leak is a temporary fix that will recur. Prime Air locates and repairs the leak before recharging.

4. Frozen Evaporator Coil ($150–$500)

If you see ice on your AC unit or refrigerant lines, your evaporator coil is frozen. Caused by low refrigerant, dirty coils, or restricted airflow. Turn the system off and let it thaw — then call Prime Air to diagnose the root cause.

5. Dirty Condenser Coils ($150–$400)

Your outdoor unit’s condenser coils release heat from your home. When they’re coated in dirt, salt deposits (common in South Florida), or debris, they can’t release heat efficiently — so the system runs but can’t cool properly. Annual coil cleaning prevents this.

6. Compressor Failure ($1,200–$3,500 or full replacement)

The compressor is the heart of your AC system. When it fails, the system may run but won’t cool at all. At this repair cost, replacement is often the smarter financial decision — especially for systems over 10 years old. Prime Air will give you honest guidance on repair vs. replace.

7. Ductwork Leaks ($300–$1,500)

If conditioned air is escaping through leaks in your ductwork before reaching your rooms, your home won’t cool properly even though the AC is working fine. Common in older Boca Raton homes.

What to Do Right Now If Your AC Isn’t Cooling

1. Check your thermostat — make sure it’s set to COOL and the temperature is below your current room temperature
2. Check your air filter — if it’s clogged, replace it and wait 30 minutes
3. Check your outdoor unit — is the fan spinning? Is there ice? Any unusual sounds?
4. Check your circuit breaker — a tripped breaker can cause partial failures
5. Call Prime Air — (561) 855-0659 for same-day diagnosis

Related: AC Repair Boca Raton | Boca Raton Communities | Emergency AC Repair Boca Raton | AC Repair Cost Guide | AC Freezing Up | AC Tripping Breaker | Repair vs. Replacement | AC Financing