Thermostats usually fail due to power or settings issues, or because the control signal isn’t reaching your HVAC. Our techs diagnose these quickly during HVAC troubleshooting in Roanoke and Salem.
Quick checks you can try:
- Replace the thermostat batteries.
- Set to Heat or Cool and lower/raise the setpoint by 3–5 degrees.
- Check the HVAC breaker is ON.
- Make sure the fan setting is Auto.
- If recently installed, verify the thermostat is firmly seated on its base.
Updated: 2025-12-24
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