Rheem XG55T06EC50U0

This site computed the 273 therms figure; the registry does not publish it. The calculation uses the registry's UEF, the ratio of hot water delivered to energy used. It also uses the DOE test's daily hot-water draw for the high pattern. This model's UEF is 0.62, taken from the DOE CCD and retrieved 2026-09-19. The figure applies only at the test's daily draw. A home that draws more or less hot water each day will burn a different amount of gas, and this page cannot give that amount. The steps that turn this figure into a yearly cost are set out in how the annual cost is calculated.

The high draw pattern describes 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, of 97 gallons. Its rated volume is 55 gallons. A plumber or seller confirming a unit can check both values against the label on the tank. For a smaller household with lighter use, the 273 therms figure does not apply. The registry data here gives no energy figure for this model at a lower draw pattern, so that value is not available. To compare units that share this class, use find a same-class replacement by model number.

Against its class, this model uses 13 therms more gas a year than the 260 therms median, at the test's daily draw. Among the 414 gas tank models at the high draw pattern, it ranks 367th for lowest energy use. That rank places it at the higher-use end of its class. The cost of that gas is not stated in this text. It depends on your state's average residential gas price, so the page computes it from your ZIP. You can run it in the cost calculator for your own ZIP. The installed price range appears in its own block with its source and date. It is a modeled range, not a quote.