RELIANCE WATER HEATERS MHE6-40RW-035D-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).
If you are verifying the RELIANCE WATER HEATERS MHE6-40RW-035D-1**, an electric tank, it uses 2,466 kWh of electricity a year. That figure applies at the low draw pattern, the standard daily hot-water usage DOE tests against, set for a one- or two-person household. It is 27 kWh above the 2,439 kWh median of its 163-model class.
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
- 36 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 RELIANCE WATER HEATERS model on file
What this brand files, by heater type.
UEF 0.91 · Grade G Price it on your ZIP
The 2,466 kWh figure is calculated by this site. It does not come from the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, with the DOE test's daily hot-water draw for the low draw pattern. For this model, the UEF is 0.91. The result describes energy use at that test draw, not at the draw of any particular home. This data does not give energy use for a home with a different daily draw. The inputs come from the DOE CCD, retrieved 2026-09-19. Each step is set out in how this site calculates annual energy and running cost.
The class is the 163 models registered as an electric tank at the low draw pattern. Within that class, this model ranks 88th lowest in energy use. That puts it in the second-highest quarter of its class for energy use. Its rated volume is 36 gallons. Its first hour rating, the gallons of hot water available in the first hour from a full tank, is 40 gallons. The energy figure applies only to the low draw pattern. This data has no figure for heavier daily use at a higher draw pattern. If you need a different size or fuel, use the water heater selector by fuel, space and size.
The text on this page gives no running cost for this model. The cost of 2,466 kWh a year depends on your own utility's electricity tariff. The page calculates it from your ZIP code and does not estimate it. The running-cost calculator for your ZIP applies your rate to this model's annual energy use. No installed price range is published for this model. The cost database's model was fitted on a range of ratings, and this model's ratings fall outside it. The site does not extend that range to cover it. To check a like-for-like swap, use the same-class replacement search by model number to list other electric tanks at the low draw pattern.
DOE CCD · 2026-09-19