Air-Source Heat Pumps

Reader Contribution by Paul Scheckel
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Air-source heat pumps are not exactly new to the world of air conditioning and the HVAC industry, and they are very different from ground-source heat pumps (their respective names refer the source of the heat to be gained and used). What is new however is the surge of interest in using air source heat pumps for heating in addition to cooling. This is primarily due to advances in technology that make heat pumps effective for heating in very cold climates (down to -15F), while also delivering exceptionally efficient cooling performance.

An air source heat pump is a modern appliance that extracts heat from one place and moves (or pumps) it to another, much like a refrigerator removes heat from its interior and out into the kitchen. Moving heat is much more efficient than generating it, so heat pump heating is more efficient and costs less than half as much to operate compared to conventional electric heat. Because it’s a pump, it can move heat in both directions – from indoors to out, or outside to inside. The happy result is that very high-efficiency heating and air conditioning are available through this single, integrated heating/cooling appliance.

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