Rheem PRO+G55-50N RH59

This site calculates the 273 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 pattern. For the Rheem PRO+G55-50N RH59, the UEF is 0.62. Both inputs come from the DOE CCD, retrieved 2026-09-19. The figure describes gas use at that test draw only. A home that draws more or less hot water each day will burn a different amount of gas, and this page does not have that amount. The steps behind the number are set out in how the annual cost is calculated. A plumber or seller checking this unit can compare the UEF on the registry listing with the value used here.

The high draw pattern fits a larger household, or one where showers and laundry overlap. For that use, this model lists a first hour rating, the gallons of hot water available in the first hour from a full tank, of 91 gallons. Its rated volume is 55 gallons. On energy, it ranks 367th for lowest use among the 414 gas tank models at the high pattern. That places it in the highest quarter of its class for energy use, with the median gap stated above. Models ranked ahead of it post lower or equal figures at the same test draw. For a smaller household, this page has no energy figure, because the class and rank here apply to the high pattern only. To check other models in the same class, you can find a same-class replacement by model number.

No running cost appears in this text. The cost of 273 therms a year depends on the reader's state average residential gas price. The page calculates that cost from the ZIP entered in the cost calculator on your own ZIP. The same price applies to the 260 therms class median, so the cost gap to the median follows the 13 therms difference in gas use. The installed price range sits in its own block with its source and date. It is a modeled installed-cost range, not a quote. What a given home will pay each year stays unknown until its own rate and daily hot-water use are known.