Posts tagged 'furnaces'

What Are Furnace Stages?

Single stage furnaces have just stage of heat output: high. A single stage furnace will output 100% at all times, regardless of the temperature outside or inside the home. Imaging always driving your car at highway speeds, regardless of the recommended speed limit or road conditions. That's how a single stage furnace operates: the gas valve is either on or off.
3 years ago
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