GE GG40S**BXR01

The registry lists a UEF, the ratio of hot water delivered to energy used, of 0.64 for this model. This site combined that value with the DOE test's daily hot-water draw for the high draw pattern to reach 264 therms of natural gas a year. The registry does not publish that annual figure itself. It applies only at the test draw: a household that uses more or less hot water will use more or less gas. The 414 models registered as a gas tank at this draw pattern have a median of 260 therms. This unit sits 4 therms above it, at 236th lowest energy use of 414, in the second-highest quarter of its class. The source is DOE CCD, retrieved 2026-09-19.

The high draw pattern describes 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, and its rated volume is 40 gallons. Those two figures are the ones to compare with your own peak-hour demand. This page holds no data on your household's actual usage, so it cannot say whether 78 gallons covers it. Models ranked ahead of 236th use less energy at the same draw pattern, and the water heater selector by fuel, space and size can narrow the choice by other limits. A household drawing less than the test draw would use less than 264 therms; one drawing more would use more.

The running cost is not stated here because it depends on your state's average residential gas price, and this page does not estimate it. The 4 therms gap to the class median is measured in energy, and turning it into a cost needs that same price. Enter your ZIP in the cost calculator to apply the price to 264 therms. The steps are documented in how the annual cost is calculated. The modeled installed-cost range appears in its own block with its source and date; it is a modeled range, not a quote. To compare against other units in the same class, find a same-class replacement by model number using GG40S**BXR01.