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Thermostat not cooling? Discover the 7 most common causes and simple fixes you can try before calling a technician — from dirty air filters to AC unit issues.
Thermostat Troubleshooting & Fixes
Why Is My Thermostat Not Turning On? 7 Simple Fixes That Work (2026)
Why is my thermostat not turning on? Discover the 7 most common causes of a blank screen and learn simple step-by-step fixes you can try before calling a professional.