A 2.5 gallon plug-in tank with an eight-year tank and parts warranty, the best-covered small tank here. Good for a single sink where you want it to last.
Amazon $205.26
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
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
- 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
- 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 number | PROE2 1 RH MT |
|---|---|
| Heating | |
| Tank capacity | 2.5 gal |
| Element | 1,440 W |
| Voltage | 120 V |
| Current | 12 A |
| Electrical connection | Plug-in |
| Recovery (maker figure) | 15 min at 60 °F rise |
| Thermostat range | 50 to 140 °F |
| Price per gallon | $87.60 |
| Installation | |
| Dimensions (H x W x D) | 17 x 10.9 x 10.9 in |
| Weight | 17.6 lb |
| Water connections | 1/2" NPT |
| Relief valve included | Yes |
| Wall bracket included | Yes |
| Warranty | |
| Tank | 6 years |
| Parts | 2 years |
Alternatives in this size
A low-priced 2.5 gallon plug-in tank for a single sink, with a six-year tank warranty. It is the value pick among the small tanks.
Amazon $159.99A German-made 2.5 gallon plug-in tank for one bathroom or kitchen sink. It costs more than the imports but carries a six-year tank warranty.
Amazon $212.91Compare
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