RELIANCE WATER HEATERS ENJ-30 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).
For a second opinion on this unit's energy use: RELIANCE WATER HEATERS ENJ-30 1**, an electric tank, uses 2,466 kWh a year at the low draw pattern, the standard daily hot-water usage DOE tests against, for a one- or two-person household. 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
- 43 gal DOE CCD · 2026-09-19
- Rated Storage Volume the tank size in gallons
- 26 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 0.91 · Grade G Price it on your ZIP
The figure of 2,466 kWh is computed by this site, not by the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, of 0.91 with the DOE test's daily hot-water draw for the low draw pattern. The fuel is electricity, and the source is DOE CCD, retrieved 2026-09-19. The comparison group is the 163 models registered as an electric tank at the low draw pattern. This model sits 27 kWh above their median of 2,439 kWh. It ranks 88th lowest energy use of 163, which is the second-highest quarter of its class. The calculation is described on the methodology page for water heaters.
The first hour rating, the gallons of hot water available in the first hour from a full tank, is 43 gallons for this model, and its rated volume is 26 gallons. The 2,466 kWh figure applies only at the low draw pattern, a one- or two-person household. A household that draws more hot water than that pattern is outside the condition of the figure, and this data gives no annual energy value for other draw patterns. The 27 kWh gap to the class median of 2,439 kWh is likewise valid only at the low draw pattern. The data does not show how the unit behaves under any other daily use, so none is estimated here.
Running cost is not stated in this text because it depends on your own utility electricity tariff. The cost calculator for your ZIP applies your rate to the 2,466 kWh at the low draw pattern. The cost of the 27 kWh difference from the median of 2,439 kWh also depends on that rate, so no amount is given. An installed price range is not published. This model's ratings, including its rated volume of 26 gallons and first hour rating of 43 gallons, lie outside the range the cost database's model was fitted on, and the range is not stretched past it. To compare by fuel, space and size, use the water heater selector, or find a same-class replacement by model number.
DOE CCD · 2026-09-19