Your HVAC Keeps Turning On or Off. … Faulty Thermostat Readings. … Suspiciously High Energy Bills. … Constant Temperature Shifts. … Thermostat Is Too Old. … Thermostat Fails to Respond to Changed Settings. … Your HVAC System Short Cycles.
How do you know if you need a new thermostat?
- Heating or cooling system will not turn off or on.
- The temperature reading is incorrect.
- Recent spike in your energy bill.
- Frequent temperature fluctuations.
- Thermostat is 10 years old or older.
How do you diagnose thermostat problems?
When you’re testing a thermostat, you’ll want to drop it in a pan of cold water and then bring it to a boil. We’re assuming that your thermostat is cold and therefore in the closed position; if it’s cold and it’s open you’ve found your problem.
How do I test my home thermostat?
- Step 1: Turn off HVAC power. This can be done by switching the furnace to the off position if your system has an on/off switch. …
- Step 2: Remove thermostat cover. …
- Step 3: Remove wires from terminals. …
- Step 4: Turn the HVAC power back on. …
- Step 5: Test other wires.
