Tag: furnace fan issues

Why Is My Furnace Fan Running Constantly?

That constant, unending hum from your vents can be a real head-scratcher. If you’re trying to figure out why your furnace fan runs constantly, the most common culprit is usually a simple thermostat setting. More often than not, the fan switch has just been accidentally flipped from “AUTO” to “ON,” forcing it to blow air […]

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