Furnace Blowing Cold Air

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Furnace Blowing Cold Air — How to Troubleshoot and Fix It Before You Call for Heating Repair

A furnace that runs but blows cold air usually comes down to a thermostat setting, a dirty flame sensor, or a failed igniter — here's how to find out which one you have and fix the DIY-safe ones.

intermediate 9 minute read $0-$200