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 Clifton Avenue (Springfield, OH)

Springfield Heating & Air Conditioning
"Technicians Stan and Trent did a great job installing my wall mounted boiler combi. Sales rep Luis was thorough and engaged from start to complete. Strongly recommend this team for"
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Lemmons Heating & Air Conditioning
"I had a great experience working with Tyrone today! He was knowledgeable, helpful, and timely. From the time I called to the final repair was just a few hours. Thanks so much!"
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Segrest HVAC
"Furnace was out at my business. He showed up promptly and when he said he would. Had it running in no time. Thanks very much. It’s always a pleasure working with you!"
View pro & call →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 — Clifton Avenue (Springfield, OH)
Clifton Avenue's compact older homes reward clean scoping on roofs, plumbing, and electric safety fixes.