Furnace Operation in Subzero Temperatures
Your Furnace is Working Properly if it is Producing Warm Air but not reaching the Thermostat Setting.
Example: Thermostat = 70 Degrees | Actual Tempurature = 65 Degrees
Scheduling a technician to perform a service call will not help the temperature in your house. If your furnace is continually running and still heating, it is working as designed during sub-zero temperatures.
Furnaces are designed to heat your home to around 70 degrees when the outside temperature is at 0 degrees. Once the outside temperatures drop below zero, a furnace may not reach the set temperature. However, the unit is still working as designed. Once the outside temperature begins to rise, your furnace will return to normal operation.
Helpful Tips:
- Change your furnace filter: A clogged filter makes your furnace work even harder.
- Keep your thermostat at a fixed temperature during extreme cold. Do not lower it while you sleep, as it will have to work even harder to get warm again.
- Install and test carbon monoxide detectors.
If your unit is not turning on at all, please schedule a service call.
