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Why Is My Air Conditioner Not Turning On Despite Thermostat Set to Cool?

Your AC may not turn on because of thermostat power loss, a tripped breaker, a full condensate pan triggering a safety switch, or an equipment issue that needs diagnosis. Hopkins Air Conditioning offers 24/7 same-day emergency HVAC repair, and our NATE- and NCI-certified techs can diagnose the root cause and fix it for homes in Boca Raton and West Palm Beach.

Quick checks:

  • Replace thermostat batteries and confirm “Cool” with fan “Auto.”
  • Reset any tripped HVAC breaker.
  • Replace a clogged air filter.
  • Empty/clear the condensate drain if the pan is full.
<br/> Updated: 2026-01-02 <br/>

Need help in Boca Raton, FL? Call (561) 431-9152 or book online.

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