American GCR-30R 2**

It holds 29 gallons in the test, 1 gallon less than its 30-gallon sold size. It delivers 52 gallons of hot water in the test's first hour. That is 23 gallons more than its tank holds, since it reheats during the hour. Of 763 gas storage models, 736 give more hot water in the first hour. The median gas storage model gives 78 gallons in the first hour of the test.

On Oct 26, 2026, this heater was not listed as ENERGY STAR certified. In tests, 61% of the energy it uses ends up as hot water (UEF 0.61). Its test ran at the medium level of daily hot water use. Of 288 gas storage models with the same draw pattern, 72 have a higher UEF and 200 a lower one. For its type and draw pattern, the UEF runs from 0.57 to 0.75. The water took in 74% of the energy used to reheat it (its recovery efficiency).

It is sold as G62-30T30R 2** and G62-30T30R 2*1. Its test figures match those of 3 other basic models. Those basic models are sold with A. O. Smith, Lochinvar, and State as their brand names. For the full group, see the A. O. Smith GCR-30R 2** page.