Ariston Andris Mini Tank Electric Water Heater 2.5 Gallon
- Capacity: 2.5 gallons
- Wattage: 1400 watts
- Power Source: Corded Electric
- Mount Type: Wall
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
Worth a look for a small booster tank in an RV, boat or single remote sink, less so if more than 2.5 gallons of reserve is needed.
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ASIN: B07RT71RYHCategory: Water Heaters
Overview
This is Ariston's Andris-series 2.5-gallon mini tank electric water heater, a point-of-use unit meant for a single sink, an RV galley or another compact spot where running a long hot water line isn't practical. It plugs into a standard 120-volt outlet and can work alone or as a booster ahead of an existing hot water system.
At 2.5 gallons it is one of the smaller mini tanks in this size class, closer to a single-sink supplement than a stand-in for a home's main heater. The titanium glass lining is Ariston's durability pitch for the tank interior, aimed at resisting corrosion over years of use. Marketed as a Smart Boost model, it is positioned to raise the temperature of water already arriving from another source as much as to heat cold water from scratch.
- 2.5-gallon mini tank
- 120-volt plug-in
- Titanium glass-lined tank
- Stand-alone or booster installation
Who it's for
Suits an RV, boat, garage or remote sink where a small volume of hot water on demand matters more than large capacity. A poor fit for anyone expecting it to cover a shower or multiple fixtures at once.
Pros and cons
- Compact 2.5-gallon size fits RV and tight under-sink spots
- Can run stand-alone or as a booster to an existing heater
- Titanium glass-lined tank for corrosion resistance
- Simple 120V plug-in installation
- No wattage, flow rate or pressure spec listed in the data provided
- 2.5 gallons is a small reserve for more than one fixture
- No stated warranty length
Performance notes
Ariston built the tank with a titanium glass lining rather than plain steel, a detail aimed at resisting corrosion inside the tank over repeated heat cycles. Because it can install as a booster ahead of an existing hot water line, it is also being sold as a way to raise incoming water temperature rather than only heating from cold, which is a different job than a pure point-of-use unit performs alone. No wattage, flow rate or pressure rating is given in the listed specs, so check the manual for exact install limits.
Specifications
| Brand | Ariston |
|---|---|
| Dimensions & fit | |
| Item Dimensions W X H | 14.2 × 14.2 inches |
| Capacity & performance | |
| Capacity | 2.5 gallons |
| Heat Output | 1400 watts |
| Power & efficiency | |
| Wattage | 1400 watts |
| Power Source | Corded Electric |
| Voltage | 120 volts |
| Construction & materials | |
| Material Type | Titanium |
| Color | Silver |
| Compatibility & installation | |
| Mount Type | Wall |
| Included components | |
| Unit Count | 2.5 Count |
| Other details | |
| Number Of Items | 1 |
| Style Name | 2.5 Gallon |
| Special Features | Lightweight |
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Frequently asked questions
Can the Ariston Andris work with an existing water heater?
Yes, Ariston lists it as installable either stand-alone or as a booster ahead of an existing hot water system.
Is this heater suited to an RV?
Its 2.5-gallon compact size is marketed for RVs, boats and other tight spaces alongside standard under-sink use.
What is the tank material?
Ariston specifies a titanium glass-lined tank, intended to resist corrosion over the unit's service life.