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AC Blowing Warm Air
in Tallahassee, FL
Warm air from the vents is one of the most obvious signs that your AC has stopped doing its job. In Tallahassee, where summer temperatures stay above 90 degrees for months, a system blowing warm air is not something you can wait on. The longer a failed compressor or refrigerant problem goes unaddressed, the more risk there is of further damage to the system.
Quick Answer
When AC vents blow warm air in Tallahassee, it usually means the compressor has stopped working, the refrigerant is gone, or the thermostat is set wrong. Check your thermostat first and make sure it's set to cool and the fan is set to auto, not on. If the settings are right and the air is still warm, call (850) 907-7205 because something mechanical has failed.
Telltale Signs
Warning Signs to Watch For
- Air from all vents feels the same temperature as the room or warmer
- The indoor fan is running but the outdoor unit is not
- The thermostat reads the correct set temperature but the house is clearly warmer
- The outdoor unit makes a humming sound but doesn't seem to be doing anything
- The circuit breaker for the AC unit has tripped
Root Causes
What Causes AC Blowing Warm Air?
Failed Compressor
The compressor is the heart of the outdoor unit and pumps refrigerant through the whole system. When it fails, the fan may still run but no cooling happens at all. Units in Tallahassee that run 9 to 10 months a year age faster than in northern states, and compressors on systems over 12 years old are at higher risk of failure.
The Fix
Compressor Replacement or System Replacement
A technician confirms the compressor is the problem before recommending replacement. On older systems, replacing just the compressor sometimes isn't the best path because other parts are near the end of their life too.
Tripped Disconnect or Breaker
The outdoor unit has its own electrical disconnect box mounted on the wall nearby. If that disconnect has tripped or been switched off, the compressor won't run even though the indoor fan still works fine. This is common after thunderstorms, which hit Tallahassee more than almost anywhere else in the country.
The Fix
Electrical Inspection and Reset
A technician checks the disconnect box, the breaker panel, and the wiring to find out why power was lost. Resetting it without finding the cause means it will trip again.
Refrigerant Completely Gone
If a refrigerant leak goes unrepaired long enough, the system eventually has no refrigerant left at all. At that point the compressor may still run but there's nothing to transfer heat, so only warm air comes out. This usually doesn't happen overnight. It builds over one or two cooling seasons.
The Fix
Leak Detection, Repair, and Full Refrigerant Recharge
Finding the leak is step one. Recharging without repairing the leak is a short-term fix that won't last the season.
Self-Diagnosis
Which Cause Applies to You?
Check the signs you're observing to narrow down the likely root cause before your inspection.
| What You're Seeing | Failed Compressor | Tripped Disconnect or Breaker | Refrigerant Completely Gone |
|---|---|---|---|
| Outdoor unit is completely silent and not running at all | |||
| Outdoor unit fan spins but the system still blows warm air | |||
| Problem started right after a thunderstorm | |||
| System has been losing cooling gradually over the past year | |||
| Breaker in the electrical panel is tripped |
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