LOCHINVAR ENL-40 1**
0.89 UEF DOE CCD · 2026-09-19Grade G: where this UEF sits among the 163 models in its class, lowest (G) to highest (A). A position, not an official label. How the grade is set
An electric tank, low draw pattern (a one- or two-person household).
If you are verifying the LOCHINVAR ENL-40 1**: it uses 2,522 kWh of electricity a year at the low draw pattern, the standard daily hot-water usage DOE tests against. The low pattern stands for a one- or two-person household. That figure sits 83 kWh above the 2,439 kWh median of the 163 low-draw electric tanks.
Energy use per year
2,522 kWh a year
Computed by this site from the registry's UEF and the federal test's daily hot-water draw for this draw pattern. What it costs depends on the electricity rate where you live.
That is above the median of 2,439 kWh for the 163 models registered in the same heater type and draw pattern; it ranks 143 of 163, lowest energy first.
Solid line: this model (2,522 kWh). Dashed line: the class median.
Min 724 kWh Median 2,439 kWh Max 2,550 kWh
What it costs to run where you live
What the registry files
- UEF (Uniform Energy Factor) how much hot water you get for each unit of energy the heater uses
- 0.89 DOE CCD · 2026-09-19 Compared only with other models registered as an electric tank at the low draw pattern.
- Draw Pattern the standard daily usage profile DOE tests the unit against
- Low DOE CCD · 2026-09-19
- First Hour Rating how many gallons of hot water the unit can deliver in one hour, starting from a full tank
- 50 gal DOE CCD · 2026-09-19
- Rated Storage Volume the tank size in gallons
- 35 gal DOE CCD · 2026-09-19
What it costs to install
Not published: Installed cost range
This model's UEF lies outside the range NLR REMDB's cost model was fitted on, and the range is not stretched past it.
The annual energy figure on this page does not depend on this range and is unaffected.
Safety record
No CPSC recall names this model.
Checked against the CPSC recall database. CPSC does not publish a model-level match for this product category, so this list is curated by hand from the manufacturer's recall filings.
CPSC · 2026-09-24What these figures mean
How this compares
The closest models in the same class — same fuel, type and draw pattern.
Keep going
How every figure on this page is calculated
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Find what replaces your water heater
Enter the model number off your old unit and see what is on file today, with the yearly cost difference.
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Find a water heater that fits
Three questions — fuel, hot water need, install space — narrow every model on file to the ones that fit.
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What a water heater costs to run
Prices a unit's efficiency against your own utility's filed tariff for your ZIP code.
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Is a 30-gallon water heater enough?
Answered from what models in this size actually file.
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Water heaters
Every model on file with the Department of Energy, by heater type.
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All electric resistance tank water heaters
Electric tanks that file a UEF below 2.0 — heated by elements, not a heat pump.
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Every LOCHINVAR model on file
What this brand files, by heater type.
UEF 0.89 · Grade G Price it on your ZIP
The 2,522 kWh figure is calculated by this site. It does not come 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 low pattern. The registry lists a UEF of 0.89 for this model, from DOE CCD, retrieved 2026-09-19. The annual figure therefore applies only at the federal test's daily draw. A household that draws more or less hot water than the test will use a different amount, and this page does not have that amount. The steps behind the conversion are set out in how the annual cost is calculated.
Among the 163 models registered as an electric tank at the low draw pattern, this one ranks 143rd lowest in energy use. At the test draw, that puts it in the highest quarter of its class for energy use. Its first hour rating, the gallons of hot water available in the first hour from a full tank, is 50 gallons, from a rated volume of 35 gallons. The low pattern matches a one- or two-person household. The registry data for this model does not show its energy use at a heavier draw pattern. To compare it with other electric tanks by fuel, space and size, use the water heater selector.
This page does not state the running cost because it depends on your own utility's electricity tariff. The cost calculator for your own ZIP applies that tariff to the 2,522 kWh figure at the test draw. At a single fixed rate, the 83 kWh gap above the class median shows up in the cost in the same direction. This model has no published installed price range. Its ratings fall outside the range the cost database's model was fitted on, and the site does not extend that range beyond its limits. To look up models in the same class by model number, use find a same-class replacement.
DOE CCD · 2026-09-19