State GPCX-50L 1**

It holds 49 gallons in the test, 1 gallon less than its 50-gallon sold size. Starting full, it gives 118 gallons of hot water in its first hour of use. Its tank holds 49 gallons, so reheating adds 69 gallons during the first hour. In the first hour, 43 of the 763 gas storage models give more hot water. The median gas storage model gives 78 gallons in the first hour of the test.

It has one model number that is ENERGY STAR certified. In tests, 90% of the energy it uses ends up as hot water (UEF 0.90). The daily hot water use in the test, called its draw pattern, was high. Of 434 gas storage models with the same draw pattern, none has a higher UEF. On its draw pattern, the median gas storage UEF is 0.66. Of the energy spent to reheat water, 92% goes into it (its recovery efficiency).

It is sold as GP8-50-HXPCSL 1** and GP8-50-YXPCSL 1**. There are 11 more basic models with the same test figures. Between them, those basic models carry 7 other brand names. You can find the whole group on the page for the A. O. Smith GPCX-50L 1**.

It may qualify for 4 rebate programs in 4 states. Another one rebate program may accept it if it meets their other terms.