American HPTA-80 2**

It holds 81 gallons in the test, 1 gallon more than its 80-gallon sold size. Over one hour from a full tank, it gave 95 gallons in the test (its first-hour rating). Its tank holds 81 gallons, so reheating adds 14 gallons during the first hour. In the first hour, 17 of the 481 heat pump models give more hot water. The median heat pump model gives 72 gallons in its first hour.

It is ENERGY STAR certified under its single model number. In the test, it delivered 3.88 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 high (its draw pattern). Of 237 heat pump models with the same draw pattern, 112 have a higher UEF and 115 a lower one. For its type and draw pattern, its UEF sits at the median. While it reheats, the water gains 428% of the energy it uses (its recovery efficiency).

All of its test figures are shared by 4 other basic models. Each of them is listed under a different brand. For the full group, see the A. O. Smith HPTA-80 2** page.

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