Senville SENWH-HP65US

It holds 60 gallons in the test, 5 gallons less than its 65-gallon sold size. Starting full, it gives 80 gallons of hot water in its first hour of use. Reheating lets it give 20 gallons beyond the 60 gallons in its tank. Among 481 heat pump models, 146 have a higher first-hour rating. Among heat pump models, the median first-hour rating is 72 gallons.

Its single model number, SENWH-HP65US, is ENERGY STAR certified. For each unit of energy it uses, 3.90 units end up in the hot water (its UEF). It moves heat from the air rather than making it, so its UEF passes 1. Its test ran at the high level of daily hot water use. Of 237 heat pump models with the same draw pattern, 97 have a higher UEF and 125 a lower one. A UEF of 3.88 is the median for its type and draw pattern. Its recovery efficiency is 450%, because it takes heat from the air as it reheats water.

All of its test figures are shared by 13 other basic models. Between them, those basic models carry 9 other brand names. For the full group, see the Rinnai REHP65 page.

In 19 states, 20 rebate programs may accept it. It may qualify for 7 more if it meets terms its figures do not show.