Ruud MR40245 C
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 Ruud MR40245 C, it uses 3,531 kWh of electricity a year at the medium draw pattern, the standard daily hot-water usage DOE tests against. That equals the class median of 3,531 kWh for electric tanks at this pattern, a difference of 0 kWh. It ranks 213th of 426 for lowest energy use.
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
- 51 gal DOE CCD · 2026-09-19
- Rated Storage Volume the tank size in gallons
- 37 gal DOE CCD · 2026-09-19
What it costs to install
$1,605–$1,828 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 Ruud model on file
What this brand files, by heater type.
UEF 0.92 · Grade G Price it on your ZIP
The 3,531 kWh figure is computed by this site. It does not come directly from the registry. It starts from the registry's UEF, the ratio of hot water delivered to energy used. For this model the UEF is 0.92. The site applies that ratio to the DOE test's daily hot-water draw for the medium draw pattern. The source is the DOE CCD, retrieved 2026-09-19. The result holds only at that test draw. A household that uses more or less hot water will use a different amount of electricity. Among the 426 models registered as an electric tank at the medium draw pattern, this model ranks 213th for lowest energy use. The full steps are set out on the page explaining how the annual cost is calculated.
The medium draw pattern stands for a typical household's daily hot-water use. The 3,531 kWh figure applies to homes whose use is close to that pattern. This model has a rated volume of 37 gallons. Its first hour rating, the gallons of hot water available in the first hour from a full tank, is 51 gallons. A home whose morning demand exceeds 51 gallons in the first hour would draw beyond the test condition. For that home, the annual figure does not describe actual use. The registry data on this page does not include energy use at other draw patterns, so that figure is not available here. To compare units by fuel, space and size, use the water heater selector by fuel, space and size.
This text states no running cost for the Ruud MR40245 C. The yearly cost of 3,531 kWh of electricity depends on your own utility's electricity tariff. That tariff differs between utilities, so no single figure applies to every reader. The cost calculator for your own ZIP applies your local rate to this model's figure at the medium draw pattern. The installed price range is shown in its own block, with its source and date. That range is modeled, not a quote. To check this model against others in its electric tank, medium-draw class, use the page to find a same-class replacement by model number. Models there are compared against the same class median described above.
DOE CCD · 2026-09-19