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The pilot light is out: This one is very simple to diagnose. Sometimes, a furnace will start blowing cool air because the pilot light has gone out and might need to be relit. Now let’s talk solutions for the causes behind your furnace blowing out cold air nonstop.
14 sty 2022 · In this HVAC Training Video, I Show 6 Reasons Why the Furnace Blower Fan Keeps Running and Blowing Cold Air! Troubleshooting is Performed to Show How to Figu...
22 lip 2023 · If you notice your furnace isn’t heating or it’s blowing cold air and won’t shut off, you may feel like shutting your furnace off completely. Usually the air coming out of the vents is room temperature air and not actively cooling the house, so shutting your furnace off won’t make a difference.
The problem: A dirty or clogged furnace filter prevents proper airflow from reaching your furnace. In normal operation, your furnace blower fan pulls in cold air, and the air is warmed as it passes over the heat exchanger before the blower sends the heated air into your ductwork. A dirty filter blocks the airflow.
If your furnace won’t turn off, you should look at the thermostat, the air filters, stuck buttons/switches, leaking air ducts, a faulty blower motor, or issues with the electrical sensors. It’s crucial to fix a furnace that won’t turn off immediately, not only because it can make your home uncomfortable but also because it poses a serious ...
5 gru 2022 · A furnace blowing cold air indicates that something is amiss. The furnace might have overheated, or there could be an issue with the thermostat, air filter, pilot light, flame sensor, ducts, condensate line, or gas supply.
Why is my furnace blowing cold air? See the most common reasons why you have a heater blowing cold air and learn how to get the heat back on. Explore our DIY solutions to diagnose and fix a heater not blowing hot air.
