25 Years Serving St. Louis•Home of the $55 Service Charge•Available 24/7 for Emergencies•Family-Owned & Operated by Kim Manson•All Major Brands Serviced•25 Years Serving St. Louis•Home of the $55 Service Charge•Available 24/7 for Emergencies•Family-Owned & Operated by Kim Manson•All Major Brands Serviced•
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Cooling• September 18, 2026• 4 min read

5 Signs Your AC Needs Repair Before St. Louis Summer Hits

Don't wait for a breakdown in 95° heat. These five warning signs tell you it's time to call Manson's for a fast, $55 diagnostic.

By Kim Manson · Manson's Heating & Cooling

5 Signs Your AC Needs Repair Before St. Louis Summer Hits

St. Louis summers are no joke, and the last thing you want is an air conditioner giving out during a heat wave. The good news is your AC almost always warns you before it quits completely. Here are the five signs we see most often across the 314, 636, 618, and 573 area codes.

1. Warm air from the vents. If your system is running but the air isn't cold, you likely have a refrigerant leak, a failing compressor, or a restricted airflow issue. None of those fix themselves, and running the unit makes the damage worse.

2. Strange sounds or smells. Grinding, squealing, or a burnt-electrical smell all point to mechanical or electrical problems. Shut the unit off and call us — continuing to run it can turn a $55 diagnostic into a full replacement.

3. Short cycling. When your AC turns on and off every few minutes, it's working far harder than it should. That spikes your energy bill and shortens the life of the compressor.

4. Rising energy bills. If your usage hasn't changed but your bill has, your system is losing efficiency. A tune-up often restores it for a fraction of replacement cost.

5. Uneven cooling. Hot spots in certain rooms usually mean duct, airflow, or sizing problems. We diagnose the root cause — not just the symptom.

The Manson Promise is simple: a flat $55 service charge to diagnose, upfront repair pricing you approve before any work begins, and a real family on the other end of the phone. Call (314) 210-6487 and we'll get you cooled down fast.

Need help right now?

Book a complete $55 HVAC checkup online, or call Kim and the family directly.