Richmond 10E50-HP5U15

It holds 45 gallons in the test, 5 gallons less than its 50-gallon sold size. It delivers 52 gallons of hot water in the test's first hour. Reheating lets it give 7 gallons beyond the 45 gallons in its tank. Among 481 heat pump models, 439 have a higher first-hour rating. The median heat pump model gives 72 gallons in the first hour of the test.

The single model number sold under it is ENERGY STAR certified. In the test, it delivered 3.75 units of hot water energy for each unit used (its UEF). Pulling heat from the air lets its UEF pass 1. The daily hot water use in the test, called its draw pattern, was medium. Of 226 heat pump models with the same draw pattern, 59 have a higher UEF. For its type and draw pattern, the UEF runs from 2.59 to 4.23. Its recovery efficiency is 423%, because it takes heat from the air as it reheats water.

All of its test figures are shared by 10 other basic models. Those basic models are sold with Friedrich, Rheem, and Ruud as their brand names. You can find the whole group on the page for the Rheem PROPH50 T2 RH375-15.

In 20 states, 21 rebate programs may accept it. Another 7 programs may accept it if it meets their other terms.