Ruud PROG50-40N RH67 PDV

The 245 therms figure is calculated by this site. It is not taken from the registry. 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. The registry lists this model at a UEF of 0.69. Source: DOE CCD, retrieved 2026-09-19. The high draw pattern represents a larger household, or one where showers and laundry overlap. If your home draws a different amount of hot water than the test, the 245 therms figure does not describe your gas use. This page does not show how much the figure would change at a different draw. You can check each step in how the annual cost is calculated.

Among the 414 models registered as a gas tank at the high draw pattern, this one has the 130th lowest energy use. As the summary above shows, it is below the class median. Its rank also shows that it is not at the lowest-use end of its class. The registry gives it a rated volume of 47 gallons. It also gives a first hour rating, the gallons of hot water available in the first hour from a full tank, of 82 gallons. These ratings best describe a home whose daily use is close to the high draw pattern. A smaller household may not match the test draw. For that household, the 245 therms figure is less useful as a guide. To compare other units in the same class, use find a same-class replacement by model number.

The running cost does not appear in this text because it depends on your state's average residential gas price. The page calculates it from your ZIP by applying that price to the 245 therms this model uses a year at the high draw pattern. Readers in different states will therefore see different running costs for the PROG50-40N RH67 PDV. The installed-cost range appears in its own block with its source and date. It is a modeled range, not a quote. To see the figure at your own rate, use the cost calculator for your ZIP. A running cost for this unit at any draw other than the high pattern is not available on this page.