Richmond PROG40-40N RH62

This site computed the 256 therms figure. The registry does not publish it. It combines the registry's UEF, the ratio of hot water delivered to energy used, with the DOE test's daily hot-water draw for the high draw pattern. This model's UEF is 0.66, taken from the DOE CCD on 2026-09-19. The result applies only at that test draw. A home that uses a different amount of hot water will use a different amount of gas than 256 therms. Within its class, the unit ranks 192nd for lowest energy use among 414 models. That puts it in the second-lowest quarter of gas tank models at the high draw pattern. The page on how the annual energy and cost figures are calculated explains each input.

The high draw pattern describes a larger household, or one where showers and laundry overlap. This model lists a first hour rating, the gallons of hot water available in the first hour from a full tank, of 84 gallons. Its rated volume is 38 gallons. A home whose busiest hour needs no more than 84 gallons falls within this rating. A home whose busiest hour needs more than 84 gallons falls outside what the rating covers. The registry data used here does not describe how the unit performs in that case, so that information is not available. To compare other models on the same terms, use the water heater selector by fuel, space and size.

The text on this page does not give a running cost. The running cost depends on your state's average residential gas price, so the page calculates it from your ZIP. The calculation uses the same 256 therms of natural gas at the high draw pattern, and only the rate changes by state. You can enter your ZIP in the running-cost calculator for your own ZIP. The installed price range has its own block on this page, with its source and date. It is a modeled installed-cost range, not a quote. To check a unit against the other 414 gas tank models at the high draw pattern, find a same-class replacement by model number.