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Friedrich PROE38 S2 RH93 SB-LO

Friedrich PROE38 S2 RH93 SB-LO 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-LO.

Storage volume
35gallons
UEF
0.93Uniform energy factor
First-hour rating
42gallonsHot water in the first hour
See it among every electric storage model

Advertised and certified figures

Friedrich PROE38 S2 RH93 SB-LO: advertised and certified
Friedrich PROE38 S2 RH93 SB-LO: 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 0.93, certified 0.93. First-hour rating: advertised 42 gal, certified 42 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 0.93 Certified 0.93 First-hour rating Advertised 42 gal Certified 42 gal
FigureAdvertisedCertifiedAdvertiserRead
Size 38 gal, nominal size 35 gal storage volume Friedrich Read Oct 4, 2026
Size 35 gal 35 gal storage volume Friedrich Read Oct 4, 2026
UEF 0.93 0.93 Friedrich Read Oct 4, 2026
First-hour rating 42 gal 42 gal Friedrich Read Oct 4, 2026

Certified figures by listed model

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
6PROE38 S2 FD93 SB-LO350.934298%Low

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. Over one hour from a full tank, it gave 42 gallons in the test (its first-hour rating). That is 7 gallons more than its tank holds, since it reheats during the hour. Of 477 electric storage models, 416 give more hot water in the first hour. Among electric storage models, the median first-hour rating is 55 gallons.

In tests, 93% of the energy went to hot water, so its UEF is 0.93. Its test simulated a day of low hot water use (its draw pattern). Its UEF is lower than that of 2 of the 157 electric storage models with its draw pattern. On its draw pattern, the median electric storage UEF is 0.92. When it reheats water in the test, 98% of the energy it uses ends up in the water.

Its test figures match those of 2 other basic models. Of those, one or more are under the Rheem and Ruud brands. For the full group, see the Rheem PROE38 S2 RH93 SB-LO page.

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.