Ariston Andris RS 8 Gallon
An 8 gallon tank for a kitchen or utility sink at a low price, with a six-year tank warranty. Plan on hardwiring it.
Amazon $209.99$209.99
The Ariston Andris RS 8 Gallon rates 3.4 among 6 to 10 gallon mini tank water heaters; the Ariston POU 12 Gallon rates 2.9 among 12 to 20 gallon ones. The Ariston Andris RS 8 Gallon costs $103.01 less ($209.99 vs $313).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Ariston POU 12 Gallon
A 12 gallon tank for a bathroom or kitchenette, with six years on parts and tank. Larger tanks cost little more.
Amazon $313$313
Scores side by side
These two sit in different size classes (6 to 10 gallon and 12 to 20 gallon), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | Ariston Andris RS 8 Gallon | Ariston POU 12 Gallon |
|---|---|---|
| Overall rating | 3.4/5 | 2.9/5 |
| Value 30% | 70 $26.25 per gallon ($209.99, 8 gal) | 15 $26.08 per gallon ($313, 12 gal) |
| Warranty 30% | 56 6-year tank, 2-year parts | 83 6-year tank, 6-year parts |
| Heating power 15% | 20 1,440 W element | 29 1,500 W element |
| Features 15% | 60 relief valve included, wall bracket included | 35 relief valve included |
| Tank size 10% | 50 8 gal tank | 0 12 gal tank |
Specifications
| Ariston Andris RS 8 Gallon | Ariston POU 12 Gallon | |
|---|---|---|
| Heating | ||
| Tank capacity | 8 gal | 12 gal |
| Element | 1,440 W | 1,500 W |
| Voltage | 120 V | 120 V |
| Current | 12 A | 12.5 A |
| Electrical connection | Hardwired | - |
| Recovery (maker figure) | 6.8 gal/hr at 90 °F rise | 7 gal/hr at 90 °F rise |
| Thermostat range | 65 to 167 °F | 90 to 160 °F |
| Price per gallon | $26.25 | $26.08 |
| Installation | ||
| Dimensions (H x W x D) | 17.5 x 17.5 x 15.2 in | 22.5 x 15.8 x 15.8 in |
| Weight | 29.5 lb | - |
| Water connections | 3/4" NPT (adaptor included) | 3/4" NPT |
| Relief valve included | Yes | Yes |
| Wall bracket included | Yes | No |
| Warranty | ||
| Tank | 6 years | 6 years |
| Parts | 2 years | 6 years |