LOCHINVAR ENLB-50W 1**
0.91 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).
You are checking one model's energy figure. The LOCHINVAR ENLB-50W 1** uses 2,466 kWh of electricity a year at the low draw pattern, the standard daily hot-water usage DOE tests against. That is 27 kWh above the class median of 2,439 kWh.
Energy use per year
2,466 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 88 of 163, lowest energy first.
Solid line: this model (2,466 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
- 0.91 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
- 40 gal DOE CCD · 2026-09-19
- Rated Storage Volume the tank size in gallons
- 44 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 40-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 0.91 · Grade G Price it on your ZIP
The figure of 2,466 kWh is computed by this site, not by the registry. It starts from the registry's UEF, the ratio of hot water delivered to energy used, which is 0.91 for this model. It also uses the DOE test's daily hot-water draw for the low draw pattern. The figure applies only at that test draw, and a home with different use will differ. The source is DOE CCD, retrieved 2026-09-19. Among the 163 models registered as an electric tank at the low draw pattern, this one ranks 88th lowest in energy use. That puts it in the second-highest quarter of its class for energy use.
The low draw pattern describes a one- or two-person household, so the figure of 2,466 kWh fits readers whose hot-water use resembles that test. The registry lists a first hour rating, the gallons of hot water available in the first hour from a full tank, of 40 gallons. The rated volume is 44 gallons. The registry does not say whether these ratings meet the needs of a particular home. A larger household draws more than the low draw pattern assumes, and this page does not estimate that difference. The water heater selector filters by fuel, space and size. An installed price is not published for this model. Its ratings lie outside the range the cost database's model was fitted on, and that range is not stretched.
The running cost is not stated in the text, because it depends on your own utility electricity tariff. The cost calculator computes it from your ZIP and applies that rate to 2,466 kWh. The same rate applied to the class median of 2,439 kWh gives the comparison for a typical model in the class. The gap between the two is 27 kWh of electricity a year at the low draw pattern. This page does not convert that gap to money. The method for the annual cost is described separately. To find a unit in the same class, the replacement finder by model number searches for a same-class replacement.
DOE CCD · 2026-09-19