RELIANCE WATER HEATERS HPTV-66 2**

It holds 68 gallons in the test, 2 gallons more than its 66-gallon sold size. Starting full, it gives 76 gallons of hot water in its first hour of use. Reheating lets it give 8 gallons beyond the 68 gallons in its tank. In the first hour, 186 of the 481 heat pump models give more hot water. 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 gives 3.20 units of hot water energy per unit it uses (its UEF). It moves heat from the air rather than making it, so its UEF passes 1. Its test simulated a day of high hot water use (its draw pattern). Of 237 heat pump models with the same draw pattern, 226 have a higher UEF. On its draw pattern, the median heat pump UEF is 3.88. When it reheats water in the test, the water gains 368% of the energy it uses.

All of its test figures are shared by 4 other basic models. Each of the 4 other brands lists one of them. You can find the whole group on the page for the A. O. Smith HPTV-66 2**.

It may qualify for 18 rebate programs. Another 6 programs may accept it if it meets their other terms.