RELIANCE WATER HEATERS 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 checking RELIANCE WATER HEATERS ENL-40 1**, an electric tank for a one- or two-person household, it uses 2,522 kWh a year at the low draw pattern, the standard daily hot-water usage DOE tests against. That is 83 kWh above the class median of 2,439 kWh.
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 RELIANCE WATER HEATERS model on file
What this brand files, by heater type.
UEF 0.89 · Grade G Price it on your ZIP
The registry lists a UEF, the ratio of hot water delivered to energy used, of 0.89 for this model. It does not list annual energy use. This site computed 2,522 kWh from that UEF and the daily hot-water draw the DOE test applies to the low draw pattern. The figure therefore holds only for that draw and for electricity as the fuel. Among the 163 models registered as an electric tank at the low draw pattern, the class median is 2,439 kWh. This model sits 83 kWh above it and ranks 143rd lowest energy use of 163, which places it in the highest quarter of its class for energy use. The calculation method is documented separately.
The first hour rating, the gallons of hot water available in the first hour from a full tank, is 50 gallons, and the rated volume is 35 gallons. With the figure of 2,522 kWh, these values describe a unit tested for a one- or two-person household. A reader whose hot-water use matches that profile can compare it directly with the other 163 models in the class. A reader who ranks models by lowest energy use will find it less suitable, since it uses 83 kWh more than the median. Actual use in a home depends on how much hot water the household draws, which this data does not show. The water heater selector filters by fuel, space and size, and the same-class replacement search works from a model number.
The running cost is not stated here because it depends on your own utility electricity rate. Multiplying 2,522 kWh by your rate per kilowatt-hour gives the yearly cost at the low draw pattern. The cost calculator does this from your ZIP code. At any one rate, the 83 kWh gap from the class median of 2,439 kWh scales with that rate. An installed price range is not published for this model. Its ratings, a first hour rating of 50 gallons and a rated volume of 35 gallons, lie outside the range the cost database's model was fitted on, and that range is not stretched past its limits. The energy source is DOE CCD, retrieved 2026-09-19.
DOE CCD · 2026-09-19