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Ruud PROE38 S2 RH93 SB

Ruud PROE38 S2 RH93 SB is in the DOE listing as of Oct 19, 2026.

  • Electric storage water heater
  • 1 listed model

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

Its figures are also listed under Rheem PROE38 S2 RH93 SB.

Storage volume
35gallons
UEF
0.94Uniform energy factor
First-hour rating
59gallonsHot water in the first hour
See it among every electric storage model

Advertised and certified figures

Ruud PROE38 S2 RH93 SB: advertised and certified
Ruud PROE38 S2 RH93 SB: advertised and certified Size: advertised 38 gal, certified 35 gal (advertised nominal size, certified storage volume). Size: advertised 35 gal, certified 35 gal (certified storage volume). UEF: advertised 0.94, certified 0.94. First-hour rating: advertised 59 gal, certified 59 gal. Size · advertised nominal size, certified storage volume Advertised 38 gal Certified 35 gal Size · certified storage volume Advertised 35 gal Certified 35 gal UEF Advertised 0.94 Certified 0.94 First-hour rating Advertised 59 gal Certified 59 gal
FigureAdvertisedCertifiedAdvertiserRead
Size 38 gal, nominal size 35 gal storage volume Ruud Read Oct 5, 2026
Size 35 gal 35 gal storage volume Ruud Read Oct 5, 2026
UEF 0.94 0.94 Ruud Read Oct 5, 2026
First-hour rating 59 gal 59 gal Ruud Read Oct 5, 2026

Certified figures by listed model

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
PROE38 S2 RU93 SB350.945998%Medium

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

It holds 35 gallons in the test, 3 gallons less than its 38-gallon sold size. It delivers 59 gallons of hot water in the test's first hour. Reheating lets it give 24 gallons beyond the 35 gallons in its tank. Of 477 electric storage models, 162 give more hot water in the first hour. Among electric storage models, the median first-hour rating is 55 gallons.

In tests, 94% of the energy went to hot water, so its UEF is 0.94. The daily hot water use in the test, called its draw pattern, was medium. Of 297 electric storage models with the same draw pattern, 4 have a higher UEF and 277 a lower one. For its type and draw pattern, the median UEF is 0.92. Of the energy spent to reheat water, 98% goes into it (its recovery efficiency).

All of its test figures are shared by 2 other basic models. Those basic models are sold with Friedrich and Rheem as their brand names. You can find the whole group on the page for the Rheem PROE38 S2 RH93 SB.

Also listed as

They carry every figure in the table above.

Updated Oct 19, 2026 · Methodology

Not covered

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