hot water heater
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Designing Efficient Hot Water Systems
Hot water distribution expert Gary Klein explains five ways to reduce the time people wait for hot water to reach the faucets
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Energy-Smart HVAC
How this cutting-edge, energy-lean mechanical system heats and cools a new home
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Why Aren’t Solar Water Heaters More Popular?
Despite widespread global success, solar water heating is virtually unheard of in the U.S.