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

Common thermostat problems include incorrect settings, loose or faulty wiring, and a thermostat that isn’t operating accurately. These can cause no heating or cooling, short cycling, or uneven temperatures. Our technicians test thermostat operation, review wiring and electrical parts for safety, and tighten electrical connections during diagnostics. If the issue is system-related, we also verify airflow and refrigerant levels as part of a full HVAC check.

• Quick check: Make sure the thermostat is set to Heat or Cool and the setpoint is above/below room temp.

Updated: 2025-12-24

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