What Are Common Thermostat Problems That Cause It Not To Work?

Common thermostat problems include dead batteries, incorrect heat/cool settings, tripped breakers, and loose low‑voltage wires. Location issues (direct sun or drafts) can cause false readings. Dust on sensors can prevent accurate temperature control. Smart thermostats may drop Wi‑Fi or need app/firmware updates. A blank display can also point to a failed thermostat or a furnace service switch turned off. Our technicians pinpoint whether it’s the thermostat or the HVAC control. We serve homes in Ashburn and Fredericksburg.

• Quick checks: replace batteries, verify mode and setpoint, check breaker, clean dust, and confirm Wi‑Fi.

Updated: 2025-12-24

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