Rheem PROE38 S2 RH93 SB-LO
0.93 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 this unit against the registry, the Rheem PROE38 S2 RH93 SB-LO uses 2,413 kWh of electricity a year at the low draw pattern, the standard daily hot-water usage DOE tests against. That is 26 kWh below the class median of 2,439 kWh across 163 electric tank models.
Energy use per year
2,413 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 below the median of 2,439 kWh for the 163 models registered in the same heater type and draw pattern; it ranks 9 of 163, lowest energy first.
Solid line: this model (2,413 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
- 0.93 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
- 42 gal DOE CCD · 2026-09-19
- Rated Storage Volume the tank size in gallons
- 35 gal DOE CCD · 2026-09-19
What it costs to install
$1,583–$1,994 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 30-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 Rheem model on file
What this brand files, by heater type.
UEF 0.93 · Grade G Price it on your ZIP
The figure of 2,413 kWh is not a registry entry. This site computed it from the registry's UEF, the ratio of hot water delivered to energy used, of 0.93 and from the DOE test's daily hot-water draw for the low draw pattern. The source is the DOE CCD, retrieved 2026-09-19. The figure applies only to that test draw and to electricity as the fuel. Because it comes from the test draw and not from metered use, it compares listed models with each other. It does not predict use in a specific home, and a household that draws more or less hot water than the test assumes will see a different annual figure. This page does not estimate that difference. The registry lists a rated volume of 35 gallons for this electric tank.
Among the 163 models registered as an electric tank at the low draw pattern, this model has the 9th lowest energy use of 163. That places it in the lowest quarter of its class. Its 2,413 kWh sits 26 kWh below the class median of 2,439 kWh. The data here gives that gap against the median only and does not include the spread between models. The rating suits a small household that matches the low draw pattern. Its first hour rating, the gallons of hot water available in the first hour from a full tank, is 42 gallons. A household whose busiest hour needs more hot water than that is outside what this figure describes. The water heater selector filters by fuel, space and size, and the replacement finder lists same-class models by model number.
The running cost is not written here because it depends on your own utility electricity tariff. The cost calculator applies the rate for your ZIP to the 2,413 kWh shown for this model at the low draw pattern. The same energy figure gives a different cost in each service area. Its result holds only for the test draw and for the tariff you enter. The methodology page explains how the annual cost is calculated from the registry's UEF of 0.93. The modeled installed-cost range appears in its own block on this page with its source and date. It is a modeled range and not a quote, so it is not repeated in this text.
DOE CCD · 2026-09-19