Richmond 10E80-HP5U15

It holds 72 gallons in the test, 8 gallons less than its 80-gallon sold size. Starting full, it gives 67 gallons of hot water in its first hour of use. Among 481 heat pump models, 287 have a higher first-hour rating. The median heat pump model gives 72 gallons in the first hour of the test.

Its single model number, 10E80-HP5U15, is ENERGY STAR certified. In the test, it gives 3.70 units of hot water energy per unit it uses (its UEF). A UEF above 1 is possible because it moves heat from the air into the water. Its test simulated a day of medium hot water use (its draw pattern). Of 226 heat pump models with the same draw pattern, 97 have a higher UEF and 116 a lower one. For its type and draw pattern, the median UEF is 3.68. Its recovery efficiency is 445%, because it takes heat from the air as it reheats water.

All of its test figures are shared by 10 other basic models. The Friedrich, Rheem, and Ruud brands list one or more of them. You can find the whole group on the page for the Rheem PROPH80 T2 RH375-15.

In 19 states, 20 rebate programs may accept it. Another 7 programs may accept it if it meets their other terms.