Envirosense GPCX-50L 1**

It holds 49 gallons in the test, 1 gallon less than its 50-gallon sold size. It delivers 118 gallons of hot water in the test's first hour. Its tank holds 49 gallons, so reheating adds 69 gallons during the first hour. Among 763 gas storage models, 43 have a higher first-hour rating. The median gas storage model gives 78 gallons in the first hour of the test.

Under this basic model, 2 model numbers are ENERGY STAR certified. In tests, 90% of the energy it uses ends up as hot water (UEF 0.90). Its test ran at the high level of daily hot water use. Among 434 gas storage models with its draw pattern, none reaches a higher UEF than this one. A UEF of 0.66 is the median for its type and draw pattern. When it reheats water in the test, 92% of the energy it uses ends up in the water.

Its 2 model numbers are ENV-50N 1** and ENV-50P 1**. Its test figures match those of 11 other basic models. Besides this brand, 7 brands list one or more of them. For the full group, see the A. O. Smith GPCX-50L 1** page.

In 4 states, 4 rebate programs may accept it. Another one program may accept it if it meets their other terms.