FRIEDRICH PROG30S-30N RH63

The annual figure of 185 therms is not a registry entry. This site computed it from the registry's UEF, the ratio of hot water delivered to energy used, which is 0.6 for this model, and the DOE test's daily hot-water draw for the medium draw pattern. The fuel is natural gas. The source is DOE CCD, retrieved 2026-09-19. Because the figure rests on the test's draw, it describes the model under test conditions and not your household's metered use. The class median is 185 therms, so the difference is 0 therms. Against 288 gas tank models at the same draw pattern, the model ranks 89th lowest, which places it in the second-lowest quarter of its class for energy use.

The rank applies to the medium draw pattern only. This page has no annual energy for other draw patterns, so that value is not available for this model. The first hour rating, the gallons of hot water available in the first hour from a full tank, is 51 gallons, and the rated volume is 29 gallons. A household whose morning demand matches the medium draw pattern can compare these two ratings with its own peak use. A household that draws more hot water in the first hour than 51 gallons falls outside what this page verifies. Its annual energy would differ from 185 therms, and the page does not estimate by how much. To compare units by fuel, space and size, use the water heater selector.

Running cost is not stated in the text, because it depends on the state average residential gas price where you live. The cost calculator applies the price for your ZIP to 185 therms. The method behind the annual cost is documented separately. An installed price is not published for this model. Its ratings, a first hour rating of 51 gallons and a rated volume of 29 gallons, lie outside the range the cost database's model was fitted on, and the range is not stretched past it. If you need a same-class unit for a swap, you can find a replacement by model number, starting from PROG30S-30N RH63.