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 TITAN TANKLESS WATER HEATER N120 Whole House NEW  US $195.50
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Mon, Jun 8, 2009
The term 'Energy Factor' characterizes the efficiency of both tank and tankless water heaters . The Energy Factor is the portion of the energy going into the water heater that gets turned into usable hot water under average conditions. ...
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Bosch Tankless Water Heaters: Energy Factor vs. Thermal Efficiency ...
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