LOCHINVAR ENL-36 2**

This site calculated the 3,531 kWh figure. It is not taken directly from the registry. The calculation uses the registry's UEF, the ratio of hot water delivered to energy used, and the DOE test's daily hot-water draw. This model's UEF is 0.92, from the DOE CCD, retrieved 2026-09-19. The medium pattern represents a typical mid-size household with a busy morning. The 3,531 kWh figure applies only at that test draw. A home that uses more or less hot water will use a different amount of electricity. The registry data does not show how much this unit uses in any real home, so that number is unknown. The method behind the annual figure lists each input.

Among the 426 electric tank models at the medium draw pattern, this unit ranks 213th for lowest energy use. The models ranked above it use less electricity at the same test draw. Its first hour rating, the gallons of hot water available in the first hour from a full tank, is 51 gallons. Its rated volume is 33 gallons. These figures describe the unit only under the medium pattern. A household that needs more than 51 gallons in its busiest hour would need more hot water than the rating shows. If you are checking a like-for-like swap, you can find a same-class replacement by model number and compare its figures with 3,531 kWh.

This page does not state a running cost because the cost depends on your own utility's electricity rate. The page works out the yearly cost from 3,531 kWh and the rate for your ZIP. The cost calculator for your own ZIP uses the same 3,531 kWh figure at the medium draw pattern. If you are comparing this unit with a figure from elsewhere, check that it also uses the medium draw pattern. A figure for another pattern cannot be compared directly with 3,531 kWh. The installed price range has its own block on this page, with its source and date. It is a modeled installed-cost range, not a quote, and it is separate from the running cost.