Richmond PROG50-42N RH67 PV

This site computes the 249 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. For this model the UEF is 0.68. The inputs come from the DOE Compliance Certification Database, retrieved 2026-09-19. The figure holds only at the federal test's daily draw. A household that draws more or less hot water than the test will use a different amount of gas, and that amount is not available here. Among the 414 models in its class, this model ranks 164th lowest in energy use. The method behind the annual cost shows how this energy figure becomes a cost.

The high draw pattern represents 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. Its first hour rating is 78 gallons, from a rated volume of 48 gallons. The 249 therms figure describes a household that matches the high pattern. A smaller household with lighter use falls outside that condition, so the figure does not describe its gas use. A household that needs more than 78 gallons in its busiest hour also falls outside what this rating covers. The selector by fuel, space and size lists other models by those same criteria.

This text does not state the running cost. The cost depends on your state's average residential gas price, applied to the 249 therms this model uses at the high draw pattern. The page calculates it from your ZIP code. The cost calculator for your own ZIP repeats that calculation for other rates. The model sits 11 therms below the class median of 260 therms. At any given gas price, it costs less to run than a model at the median by the price of those 11 therms. The installed price block on this page shows a modeled installed-cost range with its own source and date, not a quote. To compare another model in the same class with this one, find a replacement by model number.