STATE GCR-30R 2**

The 182 therms figure was computed by this site. It was 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 medium pattern. For the GCR-30R 2**, the UEF is 0.61. The underlying rating comes from the DOE Compliance Certification Database, retrieved 2026-09-19. The figure holds only at that test draw. A household that uses more hot water each day than the medium pattern will use more gas than 182 therms, and one that uses less will use less. This data does not show how much more or less gas a given home would use. The method behind the annual energy and cost figures sets out each step.

Within its class, the GCR-30R 2** ranks 73rd for lowest energy use among 288 models. That puts it in the second-lowest quarter of the class, 3 therms a year below the 185 therms median at the medium pattern. The tank has a rated volume of 29 gallons. Its first hour rating, the gallons of hot water available in the first hour from a full tank, is 52 gallons. A home whose busiest hour stays within 52 gallons matches the conditions this rating describes. A home whose peak hour needs more falls outside those conditions, and this data does not show how the unit performs there. For a unit sized to a different peak, the water heater selector by fuel, space and size filters the registry.

This text gives no running cost. The 182 therms of gas used a year becomes a cost only once a gas price is applied. That price is the average residential gas rate in your state, so the page calculates it from your ZIP. The running cost calculator for your own ZIP shows the result. There is also no installed price range for the GCR-30R 2**. Its ratings lie outside the range that the cost database's model was fitted on, and the site does not extend that model past its fitted range. If you are checking a replacement for this unit, the same-class replacement search by model number lists other gas tank models at the medium pattern.