Setting your thermostat to 70°F but warm air comes out of the vents? It's a common Florida AC complaint with a short list of causes. Here's the diagnostic order: start with the easy stuff (thermostat, breaker, filter), then escalate. 80% of these calls are solved in one visit.
⚠️ If warm air is coming out AND you smell burning, shut the system OFF at the breaker immediately. That's an electrical fire risk, not just an AC problem. Call us right away.
Sounds dumb but happens constantly. Check: COOL mode (not heat or fan), fan on AUTO (not ON), temperature set below current room temp. Heat pumps especially get accidentally switched to heat mode.
Most central AC systems have TWO breakers — one for the indoor air handler, one for the outdoor compressor. If only the outdoor one trips, the indoor fan blows warm air. Check your panel for half-tripped breakers.
A clogged filter restricts airflow to the point where the AC can't pull heat out. Replace if gray and dusty. Should be replaced every 30–60 days in Florida summer.
Without enough refrigerant, the system physically can't transfer heat. Look for ice on the copper line outside or hissing sound. This means there's a leak — we find it, fix it, then recharge.
When the outdoor capacitor fails, the indoor blower keeps running but the outdoor compressor doesn't. Listen at the outdoor unit — humming with no fan spinning = capacitor.
Heat pumps use a reversing valve to switch between cooling and heating. If it gets stuck in 'heat' mode, you get warm air even when set to cool. Common on systems 8+ years old.
If the outdoor coil is caked with grass, dust, or salt corrosion, heat can't escape and the system blows lukewarm air. Look for visible debris on the outdoor unit.
Run through these in order — about 30% of calls are resolved by the homeowner with these checks.
Mode: COOL. Fan: AUTO. Temp: below room temp. Try lowering by 5 degrees and waiting 5 minutes.
Find your electrical panel. AC usually has 2 breakers — one labeled AC/HVAC, one for outdoor compressor. Reset both ONCE if tripped.
If gray, dusty, or it's been 60+ days — swap it. 90 seconds, $5.
Is the fan spinning? If not, listen — hum with no fan = capacitor. If silent — breaker. If running but loud — coil/compressor issue.
Big copper pipe between outdoor unit and house — if there's ice, shut the system off for 3–4 hours to thaw.
If steps 1–5 don't resolve the warm air issue within 20 minutes, call us. Common repairs cost $150–$450 and most are done in one visit. We dispatch within 60 minutes anywhere in Miami-Dade, Broward, or Palm Beach.
📞 Get Help Now — (855) 417-8866Most common: thermostat got bumped to wrong mode, breaker tripped, or capacitor failed. Less common: refrigerant leak, frozen coil, or compressor failure.
Yes — refrigerant is what removes heat from the air. Below ~70% of proper charge, the system physically can't cool. Symptoms: warm air, ice on copper line, hissing sound near indoor unit.
If after 20 minutes the vent air is still warm — call us. Continuing to run it can damage the compressor.
In Florida summer with kids, seniors, or pets — yes. Indoor temps can hit 90°F+ within hours. We offer 24/7 emergency dispatch with no after-hours upcharge.
About 40% of warm-air calls are solved by replacing a failed capacitor — usually under 30 minutes and $200–$295 in parts.
Running but no cold air? Diagnose the cause.
5 causes from breaker to refrigerant.
Stop water damage before it spreads.
Step-by-step diagnostic guide.
Why ice forms — and how to fix it safely.
See all common repair costs upfront.
60-minute response. Same-day fix. No after-hours upcharge.
📞 (855) 417-8866