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Rheem PROE28 S2 RH95 B

Rheem PROE28 S2 RH95 B is in the DOE listing as of Oct 26, 2026.

It has a labeled size of 28 gallons, a certified storage volume of 26 gallons, a certified UEF of 0.92, and a certified first-hour rating of 45 gallons of hot water.

Its advertised UEF of 0.92 from Rheem matches the certified 0.92 (Read Oct 4, 2026).

  • Electric storage water heater
  • 4 listed models

ENERGY STAR certification does not cover this type of water heater.

Storage volume
26gallons
UEF
0.92Uniform energy factor
First-hour rating
45gallonsHot water in the first hour
See it among every electric storage model

Advertised and certified figures

Rheem PROE28 S2 RH95 B: advertised and certified
Rheem PROE28 S2 RH95 B: advertised and certified Size: advertised 28 gal, certified 26 gal (advertised nominal size, certified storage volume). UEF: advertised 0.92, certified 0.92. First-hour rating: advertised 45 gal, certified 45 gal. Size · advertised nominal size, certified storage volume Advertised 28 gal Certified 26 gal UEF Advertised 0.92 Certified 0.92 First-hour rating Advertised 45 gal Certified 45 gal
FigureAdvertisedCertifiedAdvertiserRead
Size 28 gal, nominal size 26 gal storage volume Rheem Read Oct 4, 2026
Size 28 gal, nominal size 26 gal storage volume The Home Depot Archived copy, Jul 11, 2025
UEF 0.92 0.92 Rheem Read Oct 4, 2026
UEF 0.92 0.92 The Home Depot Archived copy, Jul 11, 2025
First-hour rating 45 gal 45 gal The Home Depot Archived copy, Jul 11, 2025

Certified figures by listed model

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
PROE28 S2 RH95 B260.924598%Low
XE28S06STB38P1260.924598%Low
XE28S06STB38U1260.924598%Low
XE28S06STB45U1260.924598%Low

UEF is the uniform energy factor. A dash means the model has no such figure.

It holds 26 gallons in the test, 2 gallons less than its 28-gallon sold size. Starting full, it gives 45 gallons of hot water in its first hour of use. Reheating lets it give 19 gallons beyond the 26 gallons in its tank. In the first hour, 377 of the 477 electric storage models give more hot water. The median electric storage model gives 55 gallons in its first hour.

In the test, 8% of its energy does not reach the hot water (UEF 0.92). Its test ran at the low level of daily hot water use. Of 157 electric storage models with the same draw pattern, 12 have a higher UEF. For its type and draw pattern, its UEF sits at the median. The water took in 98% of the energy used to reheat it (its recovery efficiency).

A tag or quote may show any of its 4 model numbers. There are 7 more basic models with the same test figures. In all, 5 other brands list one or more of them.

Also listed as

They carry every figure in the table above.

Updated Oct 26, 2026 · Methodology

Not covered

  • Changes to an advertised figure after the date beside it.