Ruud PRO H65 T2 RU310BM

It holds 59 gallons in the test, 6 gallons less than its 65-gallon sold size. Over one hour from a full tank, it gave 75 gallons in the test (its first-hour rating). Reheating lets it give 16 gallons beyond the 59 gallons in its tank. Of 481 heat pump models, 193 give more hot water in the first hour. Among heat pump models, the median first-hour rating is 72 gallons.

It has one model number that is ENERGY STAR certified. In the test, it gives 3.50 units of hot water energy per unit it uses (its UEF). Pulling heat from the air lets its UEF pass 1. Its test simulated a day of high hot water use (its draw pattern). Of 237 heat pump models with the same draw pattern, 164 have a higher UEF and 45 a lower one. A UEF of 3.88 is the median for its type and draw pattern. While it reheats, the water gains 409% of the energy it uses (its recovery efficiency).

A tag or quote may show any of its 4 model numbers. Its test figures match those of 11 other basic models. The Friedrich and Rheem brands list one or more of them. For the full group, see the Rheem PRO H65 T2 RH310BM page.

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