American GPVNT-50 1**

It holds 48 gallons in the test, 2 gallons less than its 50-gallon sold size. Starting full, it gives 85 gallons of hot water in its first hour of use. Reheating lets it give 37 gallons beyond the 48 gallons in its tank. In the first hour, 192 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.

As of Oct 26, 2026, it was not listed as ENERGY STAR certified. In tests, 72% of the energy it uses ends up as hot water (UEF 0.72). In the test, daily hot water use was set to high (its draw pattern). Of 434 gas storage models with the same draw pattern, 71 have a higher UEF. For its type and draw pattern, the UEF runs from 0.61 to 0.90. When it reheats water in the test, 78% of the energy it uses ends up in the water.

Its test figures match those of 4 other basic models. Each of the 4 other brands lists one of them. For the full group, see the A. O. Smith GPVNT-50 1**.

It may qualify for 2 rebate programs in 2 states.