Did you know you can extract heat from chilly outside air and use it to heat your house? This feat is performed by the magic of a heat pump--an appliance that uses refrigeration technology rather than fuel combustion to provide warmth and cooling. Heat pumps are not new--they've been in use for more than 40 years. But upward-spiraling energy costs and technological breakthroughs have catapulted heat pumps into position as a popular, sensible alternative to conventional heating and cooling systems. |
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