Rheem Mini-Tank 2.5 Gallon

Last updated: November 9, 2026

Rheem Mini-Tank 2.5 Gallon

A slim 2.5 gallon plug-in tank from Rheem for one sink. It matches the Ariston on warranty but costs more.

  • 2.5 galTank
  • 1,440 WElement
  • Plug-inPower
  • 6 yearsTank warranty
Check price at Amazon$218.99

Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • Narrow 11 in footprint fits tight sink cabinets
  • Plugs in, with relief valve and wall bracket included
  • Six-year leak warranty from a major water heater maker
Cons
  • Costs more than identical-spec 2.5 gallon tanks
  • Thermostat tops out at 140 °F, lower than Ariston and ThermoMate

How it scores

The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.

Specifications

Model numberPROE2 1 RH MT
Heating
Tank capacity2.5 gal
Element1,440 W
Voltage120 V
Current12 A
Electrical connectionPlug-in
Recovery (maker figure)15 min at 60 °F rise
Thermostat range50 to 140 °F
Price per gallon$87.60
Installation
Dimensions (H x W x D)17 x 10.9 x 10.9 in
Weight17.6 lb
Water connections1/2" NPT
Relief valve includedYes
Wall bracket includedYes
Warranty
Tank6 years
Parts2 years

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