You finally come home from a rough, icy drive on a cold, bitter night. It was freezing, and you’re looking to get comfy, so you reach out to turn up the dial on your thermostat and find your furnace has ceased to hum and won’t heat up. Your worst fear is unfolding in the midst of a freezing night. However, don’t hit the panic button just yet. Before calling for an emergency repair service, you may be able to check out and troubleshoot a few things yourself.
Check the basics—power supply, temperature, and gas supply (if unit is gas-powered). Check the main breaker to confirm if the power is on, then make sure the power in the equipment is turned on, as well. Afterwards, go to the wall thermostat and double-check the settings. If it’s set to heat, then it should be pumping out heat. If the furnace is blowing cold air, make sure the fan is set to auto, and not on. For gas-powered units, check if the meter is on, and verify that the tank is not empty.
If the furnace powers on but some rooms aren’t receiving heat, then the problem must be in the air ducts themselves. Check the filters within the ducts for clogs like dirt and grime, as these restrict air flow and overwork the machine. Clean them and put them back on.
If the abovementioned fixes do not work at all, then it is time to call for a 24/7 emergency furnace repair service.