STATE ENJB-30 1**
0.9 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 the STATE ENJB-30 1**, an electric tank, it uses 2,494 kWh of electricity a year. That figure applies to the low draw pattern, the standard daily hot-water usage DOE tests against. It is 55 kWh above the 2,439 kWh median for the 163 electric tank models registered at that pattern.
Energy use per year
2,494 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 122 of 163, lowest energy first.
Solid line: this model (2,494 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
- 0.9 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
- 47 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 STATE model on file
What this brand files, by heater type.
UEF 0.9 · Grade G Price it on your ZIP
The 2,494 kWh figure is not a registry value. This site computed it from the registry's UEF, the ratio of hot water delivered to energy used, and the DOE test's daily hot-water draw for the low pattern. The registry lists a UEF of 0.9 and a rated volume of 26 gallons for this model. Its first hour rating, the gallons of hot water available in the first hour from a full tank, is 47 gallons. The source is DOE CCD, retrieved 2026-09-19. A household that draws more or less hot water each day than the test assumes will use a different amount of energy. How far its use would move from 2,494 kWh is not available here. The page on how this site calculates annual energy and cost sets out each step.
Among the 163 models registered as an electric tank at the low draw pattern, this model ranks 122nd from the lowest energy use. That places it in the second-highest quarter of its class for energy use. The gap of 55 kWh above the 2,439 kWh class median holds at the test's low draw only. Its position at other draw patterns is not available in this data. DOE uses the low pattern for a small household, so the figure is a fair check for that kind of use. For a household that uses more hot water each day, this rating does not describe the load. To compare it with other registered models of the same class, use the same-class replacement search by model number.
The running cost is not stated in this text because it depends on your own electricity tariff. The page multiplies the 2,494 kWh figure by that rate, at the low draw pattern. Enter your ZIP in the water heater cost calculator for your ZIP to see the result for your rate. The cost gap against the 2,439 kWh class median also depends on that same tariff, so it is not given here either. An installed price range is not published for the ENJB-30 1**. Its ratings lie outside the range the cost database's model was fitted on. The site does not stretch that range past its fitted limits, so any installed price for this model is unknown on this page.
DOE CCD · 2026-09-19