... home or central hot water water heater heat pumpheat pump water heater ,air source heat pump water, household heat pump water heater1.Using reverse Carnot ... medium heat, electric heating elements are not in contact with water, clean water, no fuel, there is no flammable, explosive, toxicity2).Energy ... /R417a/3.8x4x2Input power3.44.14.1x25.5x45.5x4x2Update Date:2012-01-11 03:51:25 water heater heat pump