What you will learn from Troubleshooting Broken Thermostats article:. In some instances, this is the case while in others the thermostat is not broken but something is wrong with the air conditioning and heating equipment that needs to be repaired. In either case, it is usually best to call an HVAC professional to look at the problem especially if you want to replace the thermostat. There are a few things you can check with your thermostat before you call an HVAC professional.
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If you have a heat pump, you might be aware that you should avoid using the emergency heat setting on your thermostat. Simply put, heat pumps operate by harnessing warm air present in the air outside your home. As outside air is pulled in to your heat pump, liquid refrigerant draws the heat out of the air, converting it to hot vapor. That heat is then distributed throughout your home.
I live in Colorado, and when it's cold it is very, very cold. My husband and I have gotten used to this, and really like being able to use a warm comforter while the air stays cooler. There are some nights, however, that even this setting seems too high and the heater is running a lot more than I'd like it to. That has me wondering: is it more energy- and cost-efficient to use a space heater for 8—10 hours while keeping the thermostat low, or does the wattage required by a space heater make up for the cost of running the heating system? How hard does my space heater need to work to keep the room warm?