ThermoMate ES800 8 Gallon
An 8 gallon plug-in tank short enough for an under-counter space. The warranty is short, and the Ariston 8 gallon costs less if you can hardwire.
Amazon $269.99$269.99
8 gal1,440 WPlug-in
2.8/5
A 6 gallon tank with six years on parts and tank, for a sink or booster you want to forget about. It costs more than plug-in rivals.
- 6 galTank
- 1,500 WElement
- 6 yearsTank warranty
Check price at Amazon$283.87
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Six-year warranty on parts as well as the tank
- Screw-in element can be swapped for a higher wattage on 208 or 240 V
- Drain valve and relief valve included
Cons
- The manual calls for installation by a qualified installer to electrical code
- Floor-standing; no wall bracket
- Costs more than most 6 gallon tanks
The Ariston POU family
Every Ariston POU model we rank, smallest first. Ratings compare each against its own size.
| Model | Tank | Rating | Price |
|---|---|---|---|
| Ariston POU 6 Gallon (this one) | 6 gal | 2.8/5 | $283.87 |
| Ariston POU 12 Gallon | 12 gal | 2.9/5 | $313 |
| Ariston POU 20 Gallon | 20 gal | 3.7/5 | $351.50 |
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 | ARI POU-06 120V 1500W |
|---|---|
| Heating | |
| Tank capacity | 6 gal |
| Element | 1,500 W |
| Voltage | 120 V |
| Current | 12.5 A |
| Recovery (maker figure) | 7 gal/hr at 90 °F rise |
| Thermostat range | 90 to 160 °F |
| Price per gallon | $47.31 |
| Installation | |
| Dimensions (H x W x D) | 15.8 x 13.8 x 13.8 in |
| Water connections | 3/4" NPT |
| Relief valve included | Yes |
| Wall bracket included | No |
| Warranty | |
| Tank | 6 years |
| Parts | 6 years |
Alternatives in this size
Eemax EMT6 6 Gallon
A wall-mountable 6 gallon plug-in tank with a six-year leak warranty. Good where floor space is short, though the GE costs less.
Amazon $280.02$280.02
6 gal1,440 WPlug-in
Camplux ME60 6 Gallon
A 6 gallon plug-in tank with mounting hardware for a sink or utility area. Its tank warranty trails GE and Eemax.
Amazon $229.99$229.99
6 gal1,440 WPlug-in
Compare
Compare the Ariston POU 6 Gallon with any other mini tank water heater →
More from Ariston: every Ariston product ranked.