Don't suffer in the heat. Here's what's wrong and how fast we can fix it.
When your AC stops cooling in South Florida, it's not just uncomfortable — it can be dangerous, especially during summer months when temperatures routinely hit the high 90s. Here are the 8 most common causes we diagnose across Miami-Dade, Broward, and Palm Beach County, and what you can do right now.
This is the #1 cause of an AC that blows air but doesn't cool. Refrigerant is the substance that makes your AC actually cool the air. When levels are low — usually due to a leak — the system can run all day without cooling effectively. This requires a licensed HVAC technician to diagnose and repair.
A clogged air filter restricts airflow so severely that your AC can't circulate enough air to cool your home. Check your filter first — if it's gray and clogged, replace it immediately. In South Florida, filters should be changed every 30–45 days due to the humidity and dust levels.
Ironically, an AC can freeze up even in South Florida heat. A frozen evaporator coil is usually caused by low refrigerant or restricted airflow. You may notice ice on the copper lines near your air handler. Turn the system off and let it thaw, then call a technician to address the underlying cause.
Your outdoor unit's condenser coils release heat from your home. When they're caked with dirt, grass clippings, or debris — common in South Florida yards — the system can't release heat efficiently and cooling capacity drops significantly. Professional coil cleaning restores full efficiency.
Capacitors start and run your AC's motors. When a capacitor fails, your compressor or fan motor can't operate at full power — meaning the system runs but can't cool effectively. A bad capacitor is one of the most common and most affordable AC repairs in South Florida.
If your ducts have leaks, cracks, or disconnected sections — very common in South Florida attics where heat and humidity degrade duct materials — cooled air escapes into the attic before reaching your living spaces. The result is an AC that runs constantly but never quite cools the home.
An AC that's too small for your home simply can't keep up on hot South Florida days. An oversized system short-cycles — turning on and off rapidly — which prevents proper dehumidification and leaves the home feeling warm and clammy despite running constantly.
In South Florida, AC systems typically last 10–15 years due to the constant year-round use. If your system is over 12 years old and struggling to cool, replacement may be more cost-effective than continued repairs. A new high-SEER system can cut your electric bill by 30–40%.
Same-day AC repair across Miami-Dade, Broward & Palm Beach. 35–45 minute arrival. Open 7am–11pm every day.