RELIANCE WATER HEATERS EETU-55W 1**

The 3,531 kWh figure is computed by this site, 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 draw pattern. This unit's UEF is 0.92. The figure therefore holds only at that test draw. A household that uses more or less hot water will use a different amount, and that amount is not available here. The source is the DOE CCD, retrieved 2026-09-19. The calculation steps are set out in how the annual cost is calculated.

Against the 426 models registered as an electric tank at the medium draw pattern, the EETU-55W 1** sits at the class median of 3,531 kWh. Its rank is 213th lowest energy use of 426. DOE's medium draw pattern stands for a typical household on a busy morning. The tank's rated volume is 55 gallons. Its first hour rating, the gallons of hot water available in the first hour from a full tank, is 64 gallons. The registry does not state whether those figures match a given home's peak demand. To check other electric tanks in the same class, use find a same-class replacement by model number.

The text gives no running cost, because that depends on your own utility electricity tariff. The cost block computes it from your ZIP, using the 3,531 kWh figure at the medium draw pattern. You can rerun it with the cost calculator on your own ZIP. A household whose daily hot-water use differs from the medium draw pattern should not read 3,531 kWh as its own consumption. For such homes, this model's energy use at another draw pattern is not available in the registry data used here. The installed price range appears in its own block, with its source and date, as a modeled installed-cost range rather than a quote. To compare other models by fuel, space or size, use the selector by fuel, space and size.