Rheem PROUH50 T2 RH350UM

It holds 45 gallons in the test, 5 gallons less than its 50-gallon sold size. Over one hour from a full tank, it gave 67 gallons in the test (its first-hour rating). Its tank holds 45 gallons, so reheating adds 22 gallons during the first hour. Among 481 heat pump models, 287 have a higher first-hour rating. The median heat pump model gives 72 gallons in its first hour.

The single model number sold under it is ENERGY STAR certified. In the test, it delivered 3.50 units of hot water energy for each unit used (its UEF). Pulling heat from the air lets its UEF pass 1. In the test, daily hot water use was set to medium (its draw pattern). Of 226 heat pump models with the same draw pattern, 158 have a higher UEF and 44 a lower one. On its draw pattern, the median heat pump UEF is 3.68. Its recovery efficiency is 400%, because it takes heat from the air as it reheats water.

Its test figures match those of 11 other basic models. Those basic models are sold with Friedrich and Ruud as their brand names. You can find the whole group on the page for the Rheem PRO H50 T2 RH310BM.

It may qualify for 21 rebate programs. Another 7 rebate programs may accept it if it meets their other terms.