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EEMAX SPEX3208T

EEMAX SPEX3208T is in the DOE listing as of Oct 19, 2026.

  • Electric tankless water heater
  • 1 listed model

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

Its figures are also listed under Rheem SPEX3208T.

Flow at a 67°F rise
0.3gallons per minuteCertified
Advertised flow
0.2gallons per minuteSupplyHouse, no rise stated
UEF
0.97Uniform energy factor
See it among every electric tankless model

Flow where you live

A bigger rise from colder incoming water leaves the heater with less flow.

Cold water
Cold water must be at least 10°F colder than the hot water setting.
Flow estimate
The estimate uses the lowest certified flow among the listed models. It is about 0.3 gal/min at a 70°F rise.

Flow limits

  • The estimate excludes the flow needed to turn the heater on, heat lost in pipes, and installation.
  • Cold water from a well or long pipe run can differ from the temperature you enter.
  • Without a stated flow limit, estimates for warmer water may exceed the heater’s actual flow.

Advertised and certified figures

EEMAX SPEX3208T: advertised and certified
EEMAX SPEX3208T: advertised and certified Flow: advertised 0.2 gal/min, certified 0.3 gal/min (advertised no rise stated, certified at a 67°F rise). Flow: advertised 0.5 gal/min, certified 0.3 gal/min (advertised at a 40°F rise, certified at a 67°F rise). Flow: advertised 0.4 gal/min, certified 0.3 gal/min (advertised at a 50°F rise, certified at a 67°F rise). Flow: advertised 0.3 gal/min, certified 0.3 gal/min (advertised at a 60°F rise, certified at a 67°F rise). Flow · advertised no rise stated, certified at a 67°F rise Advertised 0.2 gal/min Certified 0.3 gal/min Flow · advertised at a 40°F rise, certified at a 67°F rise Advertised 0.5 gal/min Certified 0.3 gal/min Flow · advertised at a 50°F rise, certified at a 67°F rise Advertised 0.4 gal/min Certified 0.3 gal/min Flow · advertised at a 60°F rise, certified at a 67°F rise Advertised 0.3 gal/min Certified 0.3 gal/min
FigureAdvertisedCertifiedAdvertiserRead
Flow 0.2 gal/min, no rise stated 0.3 gal/min at a 67°F rise SupplyHouse Archived copy, Feb 25, 2024
Flow 0.5 gal/min at a 40°F rise 0.3 gal/min at a 67°F rise SupplyHouse Archived copy, Feb 25, 2024
Flow 0.4 gal/min at a 50°F rise 0.3 gal/min at a 67°F rise SupplyHouse Archived copy, Feb 25, 2024
Flow 0.3 gal/min at a 60°F rise 0.3 gal/min at a 67°F rise SupplyHouse Archived copy, Feb 25, 2024
Flow 0.3 gal/min at a 70°F rise 0.3 gal/min at a 67°F rise SupplyHouse Archived copy, Feb 25, 2024

See how advertised flow compares across tankless models

Certified figures by listed model

Model numberUEFFlow at a 67°F rise (gal/min)Recovery efficiencyDraw pattern
SPEX3208T0.970.398%Very small

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

It heats 0.3 gallons per minute of water by 67°F in the test. The median electric tankless model heats 0.7 gallons per minute by 67°F. Of 337 electric tankless models, 271 have a higher flow than this one.

In tests, 97% of the energy went to hot water, so its UEF is 0.97. The daily hot water use in the test, called its draw pattern, was very small. Its UEF is lower than that of 37 of the 272 electric tankless models with its draw pattern. On its draw pattern, the median electric tankless UEF is 0.96. When it runs, 98% of the energy it uses reaches the water (its recovery efficiency).

Its test figures match those of 11 other basic models. Those basic models are sold with Aquapower, Rheem, and Stiebel Eltron as their brand names. For the full group, see the Rheem SPEX3208T 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.