Step-by-step response
- 1Check the thermostat
Set to COOL, fan AUTO, setpoint 5°F below current temp. Wait 5 minutes. Listen for outdoor condenser starting.
- 2Check the breaker
Look for a tripped breaker labeled 'AC' or 'Condenser'. Reset fully off then on. Don't repeatedly reset if it keeps tripping.
- 3Look at the outdoor condenser
Coils visibly dirty? Spray with garden hose (power off first). Fan blade not spinning? Likely capacitor — call same-day.
- 4Check the filter
Choked filter restricts airflow + freezes the indoor coil, blocking cooling. Replace if dirty.
- 5Call HVAC for same-day diagnosis
If unit is 12+ years old AND repair quote is $700+: get a replacement quote too. Replace becomes economic at the 50% rule.
Verified hvac technicians serving Maumee, OH
Force Heating and Cooling
Beamont Heating & Cooling
Petrie Plumbing & Heating
"Have had them over the last 12 years do work for our townhouse. Polite guys and good work."
Ferguson HVAC Supply
"Top Notch staff will get you exactly what you need for your Trane American Standard furnace"
Frequently asked
Why does my AC blow warm air?
Most common: blown capacitor (compressor isn't running), low refrigerant (slow leak), or frozen indoor coil from clogged filter or low refrigerant. The diagnosis decides the fix.
Should I repair or replace a 15-year-old AC?
If repair quote is over 50% of replacement, replace. Modern 16+ SEER systems are 30-40% more efficient — payback in 5-8 years. Plus 2026 IRA rebates for heat pumps.
Local context — Maumee, OH
Riverfront homes. Sump-pump and basement-waterproofing demand peaks in spring.