HUBBELL ME50

This site calculates the 3,531 kWh figure. It does not come from the registry. The calculation 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. This model's UEF is 0.92, from the DOE Compliance Certification Database, retrieved 2026-09-19. The result describes the test condition, not a metered household. A home that draws more hot water than the test day will use more electricity. A home that draws less will use less. How large that difference would be is not available here. The steps behind the figure are set out in how the annual energy and cost are calculated.

The rank given above compares energy use only, not capacity. This model's first hour rating, the gallons of hot water available in the first hour from a full tank, is 56 gallons. Its rated volume is 47 gallons. The medium pattern stands for a typical household on a busy morning. The energy figure therefore fits homes whose daily hot-water use is close to that test day. Some homes regularly need more than 56 gallons in their first hour. That is outside what the medium pattern tests, so the figure does not describe them. A plumber checking a swap can find a same-class replacement by model number. Readers comparing sizes can use the selector by fuel, space and size.

This text does not state a running cost, because it depends on your own utility's electricity tariff. The cost calculator for your own ZIP computes it from the 3,531 kWh test-condition figure and the rate for your ZIP. This model's energy use is equal to its class median. At any given rate, its result therefore matches the median model in its class at the test draw. A household that draws more or less hot water than the medium pattern will get a different figure, and this page cannot say how different. The installed-cost block on this page shows a modeled range with its own source and date. That range is not a quote.