Furnace doesn't always light
Is there a good thread for troubleshooting furnace problems? Mine is not quite 3 years old and has worked fine until this week. Sometimes when the thermostat calls for heat the fan comes on but the...
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I would check the burner tube to see if might be a little blocked or rusty. It doesn't take much. Probably just needs a little preventative maintenance done. Might have a spider or insect nest in there too.
