State FMDV-30 2**

It holds 29 gallons in the test, 1 gallon less than its 30-gallon sold size. Over one hour from a full tank, it gave 60 gallons in the test (its first-hour rating). Its tank holds 29 gallons, so reheating adds 31 gallons during the first hour. Among 763 gas storage models, 697 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 tests, 61% of the energy it uses ends up as hot water (UEF 0.61). The daily hot water use in the test, called its draw pattern, was medium. Among 288 gas storage models on its draw pattern, 72 have a higher UEF. A UEF of 0.60 is the median for its type and draw pattern. When it reheats water in the test, 78% of the energy it uses ends up in the water.

It is sold as GS6-30-MDV 2** and SCI-30-MDV 2**. All of its test figures are shared by 4 other basic models. Each of the 4 other brands lists one of them. For the full group, see the A. O. Smith FMDV-30 2** page.