American GCR-30R 4**

It holds 29 gallons in the test, 1 gallon less than its 30-gallon sold size. It delivers 62 gallons of hot water in the test's first hour. Its tank holds 29 gallons, so reheating adds 33 gallons during the first hour. Among 763 gas storage models, 671 have a higher first-hour rating. 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 the test, 40% of its energy does not reach the hot water (UEF 0.60). Its test ran at the medium level of daily hot water use. Among 288 gas storage models on its draw pattern, 88 have a higher UEF. For its type and draw pattern, its UEF sits at the median. When it reheats water in the test, 73% of the energy it uses ends up in the water.

It is the basic model for G62-30T32R 4** and G62-30T32R 4*1. All of its test figures are shared by 5 other basic models. Each of the 5 other brands lists one of them. For the full group, see the A. O. Smith GCR-30R 4** page.