State GPCT-40L 1**

It holds 38 gallons in the test, 2 gallons less than its 40-gallon sold size. Over one hour from a full tank, it gave 86 gallons in the test (its first-hour rating). Its tank holds 38 gallons, so reheating adds 48 gallons during the first hour. Among 763 gas storage models, 162 have a higher first-hour rating. The median gas storage model gives 78 gallons in the first hour of the test.

Of its 2 model numbers, one is ENERGY STAR certified. In the test, 10% of its energy does not reach the hot water (UEF 0.90). Its test ran at the high level of daily hot water use. No other gas storage model among the 434 on its draw pattern has a higher UEF. On its draw pattern, the median gas storage UEF is 0.66. The water took in 91% of the energy used to reheat it (its recovery efficiency).

It is sold as GP8-40-HRPCSL 1** and GP8-40-YRPCSL 1**. Its test figures match those of 11 other basic models. In all, 7 other brands list one or more of them. For the full group, see the A. O. Smith GPCT-40L 1**.

It may qualify for 4 rebate programs. It may qualify for one more if it meets terms its figures do not show.