Ruud PROG40-30P RH62 DV

This site calculated the 191 therms figure; the registry does not list it. The calculation uses the registry's UEF, the ratio of hot water delivered to energy used, for this model: 0.58. It combines that UEF with the DOE test's daily hot-water draw for the medium draw pattern. The inputs come from DOE CCD, retrieved 2026-09-19. The figure applies only at that test draw. A household that uses more or less hot water than the test assumes will use a different amount of gas. This page does not have figures for other draw patterns. The steps from energy to yearly cost are explained in how the annual cost is calculated.

This model's first hour rating, the gallons of hot water available in the first hour from a full tank, is 58 gallons. Its rated volume is 38 gallons. Its class is the 288 models registered as a gas tank at the medium draw pattern. The median energy use in that class is 185 therms a year. This model uses 6 therms more, which puts it 231st lowest of 288. Most models in its class use less energy at the same test draw. If you want to check a registered model with lower use in this class, you can find a same-class replacement by model number. To compare models by fuel, space and size, use the selector by fuel, space and size.

The text gives no running cost for this model. The cost of 191 therms of natural gas depends on your state's average residential gas price. For that reason, the page calculates it from your ZIP and does not use one national figure. The 6 therms gap to the class median also costs a different amount in each state. Your own rate is not available in this text, so the cost of that gap is unknown here. The cost calculator on your own ZIP runs the calculation for your location. The installed price range appears in its own block, with its source and date. It is a modeled range, not a quote.