MRCOOL MEWH50T82S1
0.92 UEF DOE CCD · 2026-09-19Grade G: where this UEF sits among the 426 models in its class, lowest (G) to highest (A). A position, not an official label. How the grade is set
An electric tank, medium draw pattern (a typical three- or four-person household, about 55 gallons on a busy morning).
If you are checking the MRCOOL MEWH50T82S1, an electric tank, it uses 3,531 kWh of electricity a year. That figure applies at the medium draw pattern, the standard daily hot-water usage DOE tests against. It is 0 kWh from the class median of 3,531 kWh, which puts it 213th lowest in energy use of 426.
Energy use per year
3,531 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 equal to the median of 3,531 kWh for the 426 models registered in the same heater type and draw pattern; it ranks 213 of 426, lowest energy first.
Solid line: this model (3,531 kWh). Dashed line: the class median.
Min 773 kWh Median 3,531 kWh Max 3,569 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
- 0.92 DOE CCD · 2026-09-19 Compared only with other models registered as an electric tank at the medium draw pattern.
- Draw Pattern the standard daily usage profile DOE tests the unit against
- Medium 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
- 63 gal DOE CCD · 2026-09-19
- Rated Storage Volume the tank size in gallons
- 45 gal DOE CCD · 2026-09-19
What it costs to install
$1,721–$2,028 installed
Not a quote — a modeled range of what installers have charged for this class of unit; your price will vary with labor rates, access, and local code requirements.
Escalation indexes: equipment (BLS PPI) latest available: August 2026; labor (BLS ECI) latest available: April 2026 to June 2026.
NLR REMDB (BLS PPI/ECI escalated) · 2026-04-01Safety 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 MRCOOL model on file
What this brand files, by heater type.
UEF 0.92 · Grade G Price it on your ZIP
This site computed the 3,531 kWh figure. It is not taken 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 medium pattern. This model's UEF is 0.92. The medium pattern stands for a typical mid-sized household on a busy morning. The input values come from the DOE CCD, retrieved 2026-09-19. A household that draws more or less hot water than the test pattern will use a different amount. The data does not show how large that difference would be. Each step of the calculation is set out on the page about how the annual cost is calculated.
The class used for comparison is the 426 models registered as an electric tank at the medium draw pattern. This model ranks 213th lowest in energy use and sits in the second-lowest quarter of that class. Its rated volume is 45 gallons. Its first hour rating, the gallons of hot water available in the first hour from a full tank, is 63. The comparison fits a household whose daily use is close to the medium pattern. It fits less well if the busiest hour needs more than 63 gallons, because the rating stops there. To compare other sizes or fuels, use the water heater selector by fuel, space and size. To match this unit, use the same-class replacement search by model number.
The running cost is not stated here. It depends on your own utility's electricity tariff, applied to 3,531 kWh a year at the medium draw pattern. The cost calculator for your own ZIP uses your local rate to work it out. Because this model's use is 0 kWh from the class median of 3,531 kWh, it costs the same to run as a median model in its class at any given rate. The installed price range appears in its own block on this page, with its source and date. That range is a modeled installed cost, not a quote from an installer. No figure on this page accounts for your actual hot-water use or local installation conditions.
DOE CCD · 2026-09-19