LJRUN PM-003
425 kWh a year DOE CCD (opens in a new tab) (the U.S. Department of Energy’s Compliance Certification Database) · 2026-10-25UEF 1.39 filed efficiency; the yearly figure is computed from it
Grade A: where this UEF sits among the 273 models in its class, lowest (G) to highest (A). A position, not an official label. How the grade is set
An electric tankless unit, very small draw pattern (small units - a single bathroom, or a point-of-use heater under a sink).
Energy use per year
425 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.
This model is in the lowest quarter of its class for energy use. That is below the median of 615 kWh for the 273 models registered in the same heater type and draw pattern; it ranks 1 of 273, lowest energy first.
This model 425 kWh
Median 615 kWh
Min 425 kWh Max 649 kWh
What it costs to run where you live
What the registry files
From DOE CCD · 2026-10-25
- UEF (Uniform Energy Factor) how much hot water you get for each unit of energy the heater uses
- 1.39 Compared only with other models registered as an electric tankless unit at the very small draw pattern.
- Draw Pattern the standard daily usage profile DOE tests the unit against
- Very small
- Maximum Gallons Per Minute how many gallons a minute it can heat while running continuously
- 0.9 gal/min
Installed cost and service life
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.
Ask installers for a written quote that names this model number. The yearly running cost on this page does not depend on it.
Service life: DOE’s cost database assumes 20 years for electric tankless units. That is a class assumption, not this model’s rating or a warranty — no registry publishes either.
NLR REMDB v4.0.0 · 2026-09-07Safety 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 · 2026-09-24How this compares
The closest models in the same class — same fuel, type and draw pattern — that have their own comparison page.
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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How to size a tankless water heater by GPM
Answered from what models in this size actually file.
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Clothes washers
What a washer uses in a year, including the hot water it draws.
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All electric tankless water heaters
Electric instantaneous units, sized by flow rate rather than tank gallons.
425 kWh/yr Grade A Cost on your ZIP