STATE G9-UT5040NVR 5**

The 264 therms figure is computed by this site, not published by 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 pattern. For this model the UEF is 0.64, from DOE's Compliance Certification Database, retrieved 2026-09-19. The result describes gas use on the federal test day, not on your household's own days. A home that draws more or less hot water will use a different amount, and that figure is not available here. Among the 414 models in its class, this one ranks 236th lowest in energy use. The steps behind the figure are set out in how the annual cost is calculated.

The high draw pattern stands for a larger household, or one where showers and laundry overlap. For that use, the tank's rated volume is 48 gallons. Its first hour rating, the gallons of hot water available in the first hour from a full tank, is 78 gallons. Those are the registry's test values; how the tank performs in a specific home is not recorded. A smaller household is not what the 264 therms figure describes. This page has no figure for this model at another draw pattern. A reader comparing tanks by other needs can use the water heater selector by fuel, space and size.

This text states no running cost for the 264 therms a year. That cost depends on your state's average residential gas price, so the page computes it from your ZIP in the cost calculator for your own ZIP. The 4 therms gap above the class median is a quantity of gas, and its cost follows from the same rate. The installed price shown in its own block is a modeled installed-cost range with its source and date, not a quote. To compare this model with others registered as a gas tank at the high draw pattern, use the same-class replacement search by model number.