Richmond PROG40-40N RH67 PDV

The registry does not print the 176 therms figure. This site computed it from the registry's UEF, the ratio of hot water delivered to energy used, and the DOE test's daily hot-water draw for the medium draw pattern. The registry lists a UEF of 0.63 for this model, retrieved from the DOE CCD on 2026-09-19. On energy use, the model ranks 62nd lowest of 288 in its class. That places it in the lowest quarter of the class. The class includes only gas tank models at the medium draw pattern. Figures for other fuels or other draw patterns therefore do not compare directly with this one. The steps and inputs are set out in how this site calculates annual energy and cost.

DOE's medium draw pattern represents a typical mid-sized household with a busy morning peak. The 176 therms figure applies only to that test volume. For a household whose daily use differs from the test, the registry data does not say how much gas the unit would use. The registry also lists a first hour rating, the gallons of hot water available in the first hour from a full tank, of 67 gallons. Its rated volume is 38 gallons. These two values describe peak supply, not yearly energy. To compare other units by fuel, space and size, use the water heater selector by fuel, space and size. To match this model number with a same-class unit, use the same-class replacement finder.

The running cost does not appear in this text, because it depends on your state's average residential gas price. The page works it out from your ZIP, and you can repeat the calculation in the running-cost calculator for your own ZIP. The same applies to the 9 therms gap below the 185 therms class median. That gap is measured in gas, and what it is worth depends on your own rate. The installed price range appears in its own block with its source and date. It is a modeled installed-cost range, not a quote, and this text does not repeat its figures. This site has no data on how this unit's gas use changes over the years.