Ruud MRG105245
0.9 UEF DOE CCD · 2026-09-19Grade G: where this UEF sits among the 21 models in its class, lowest (G) to highest (A). A position, not an official label. How the grade is set
An electric tank your utility can shift to off-peak hours, high draw pattern (a larger household, or one where showers and laundry overlap).
For a second opinion on Ruud MRG105245: it uses 5,512 kWh of electricity a year at the high draw pattern, the standard daily hot-water usage DOE tests against. That is 120 kWh above the class median of 5,392 kWh among 21 models, ranking 16th lowest energy use.
Energy use per year
5,512 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 5,392 kWh for the 21 models registered in the same heater type and draw pattern; it ranks 16 of 21, lowest energy first.
Solid line: this model (5,512 kWh). Dashed line: the class median.
Min 5,334 kWh Median 5,392 kWh Max 5,512 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 your utility can shift to off-peak hours at the high draw pattern.
- Draw Pattern the standard daily usage profile DOE tests the unit against
- High 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
- 83 gal DOE CCD · 2026-09-19
- Rated Storage Volume the tank size in gallons
- 101 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.
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How every figure on this page is calculated
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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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Every Ruud model on file
What this brand files, by heater type.
UEF 0.9 · Grade G Price it on your ZIP
The registry lists a UEF, the ratio of hot water delivered to energy used, of 0.9 for MRG105245. This site, not the registry, computed 5,512 kWh from that UEF and the DOE test's daily hot-water draw for the high draw pattern. The figure counts electricity only. It sits 120 kWh above the class median of 5,392 kWh, and the models ranked ahead of it among 21 use less energy under the same test. The comparison group is electric tanks your utility can shift to off-peak hours. The data comes from DOE CCD, retrieved 2026-09-19. The method behind the annual figure is documented separately.
The high draw pattern describes a larger household, or one where showers and laundry overlap, so the figure fits that use and no other. The registry data here gives no annual energy for other draw patterns, so a smaller household cannot read its own use from this number. The first hour rating, the gallons of hot water available in the first hour from a full tank, is 83 gallons, and the rated volume is 101 gallons. Compare both with your own busiest hour; this page does not say whether they cover it. To compare other fuels, spaces and sizes, use the water heater selector.
The running cost is not stated in the text, because it depends on your own utility electricity tariff. Applying that tariff to 5,512 kWh gives the yearly cost at the high draw pattern. If your utility offers an off-peak rate, this page does not have that tariff. The cost calculator works from your ZIP. An installed price range is not published for Ruud MRG105245: its ratings lie outside the range the cost database's model was fitted on, and the range is not stretched past it. To compare against similar units, find a same-class replacement by model number.
DOE CCD · 2026-09-19