RELIANCE WATER HEATERS G9-UT5040NVR 5**

This site computed the 264 therms figure; the registry does not list it. It combines the model's UEF, the ratio of hot water delivered to energy used, with the DOE test's daily hot-water draw for the high pattern. This model's UEF is 0.64. The UEF comes from DOE's Compliance Certification Database (CCD), retrieved 2026-09-19. At that test draw, the model is 236th from lowest energy use among the 414 models in its class. That rank places it in the second-highest quarter of the class for energy use. The 4 therms gap to the 260 therms median applies only at that same test draw. The method behind the annual energy and cost figures sets out each input and its source.

The high draw pattern stands for a larger household, or one where showers and laundry overlap. This model's first hour rating, the gallons of hot water available in the first hour from a full tank, is 78 gallons. Its rated volume is 48 gallons. The 264 therms figure does not describe a household whose daily draw differs from the test's. A figure at a lower draw pattern is not available for this model. A plumber replacing this unit can find a same-class replacement by model number. A reader who needs a different fuel or tank size can use the selector by fuel, space and size.

The running cost of 264 therms of natural gas is not stated in this text. It depends on the average residential gas price in the reader's state. That rate is unknown until the reader enters a ZIP. The cost calculator for your own ZIP then applies it to this model's annual figure. The same rate also prices the 4 therms gap to the class median. How much gas a particular home actually uses is also unknown; the figure holds only at the test's daily draw. The installed price range appears in its own block, with its source and date. It is a modeled installed-cost range, not a quote.