---
product_id: 239369310
title: "Ariston VELIS EVO 45L Electric Water Heater, Twin Tank, Shower Ready, Eco Evo, Durable Water Boiler & Hot Water Dispenser, Ideal Electric Heater for Home & Bathroom Heater, Unvented Kit, UK Install"
brand: "ariston"
price: "$798.41"
currency: USD
in_stock: false
reviews_count: 8
url: https://www.desertcart.us/products/239369310-ariston-velis-evo-45l-electric-water-heater-twin-tank-shower
store_origin: US
region: United States of America
---

# 1.5 kW fast heating 14% energy savings with Eco Evo 45L twin tank capacity Ariston VELIS EVO 45L Electric Water Heater, Twin Tank, Shower Ready, Eco Evo, Durable Water Boiler & Hot Water Dispenser, Ideal Electric Heater for Home & Bathroom Heater, Unvented Kit, UK Install

**Brand:** ariston
**Price:** $798.41
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Hot water, smart savings, zero compromises! 🚿

## Quick Answers

- **What is this?** Ariston VELIS EVO 45L Electric Water Heater, Twin Tank, Shower Ready, Eco Evo, Durable Water Boiler & Hot Water Dispenser, Ideal Electric Heater for Home & Bathroom Heater, Unvented Kit, UK Install by ariston
- **How much does it cost?** $798.41 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/239369310-ariston-velis-evo-45l-electric-water-heater-twin-tank-shower)

## Best For

- ariston enthusiasts

## Why This Product

- Trusted ariston brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Complete UK-Ready Kit:** Includes unvented installation kit for hassle-free setup
- • **Smart Eco Evo Function:** Learns your habits to cut energy bills by up to 14%
- • **Space-Savvy Slim Design:** Ultra-compact 27cm depth fits perfectly in tight UK homes
- • **Safety First with ABS Tech:** Anti-overheating, anti-freezing & anti-legionella for peace of mind
- • **Shower Ready in 50 Minutes:** Dual tank tech delivers hot water faster than traditional heaters

## Overview

The Ariston VELIS EVO 45L is a sleek, wall-mounted electric water heater designed for UK homes, featuring a space-saving twin tank system that heats water quickly and efficiently. With its innovative Eco Evo function, it adapts to your usage patterns to save up to 14% on energy bills. Safety is paramount with ABS anti-legionella and overheating protections, while the included unvented kit ensures easy installation. Perfect for millennials seeking smart, stylish, and sustainable home upgrades.

## Description

From the manufacturer Automatic setting of the product based on when and how much hot water is used. The elegant aesthetics are designed with attention to detail in collaboration with Italian designers. Anti-corrosion and rust-resistant technology which prevents the surface from corroding even when it is in contact with hot water. Blue LED indicates hot water is ready for user interaction.

Review: Good - Good quality
Review: Great water heater let down by poor information about accesories supplied. - Well made and works really well. A pity more details weren't given about the accessories, as the connections to unit etc are 15mm but the pressure reducing valve etc were 22mm.

## Features

- Water heater designed and manufactured to be installed in UK.
- Compact Design: With a depth of only 27 cm, the Velis Evo is perfect for installations where space is at a premium.
- Ultra slim twin tank design: Ariston’s Velis Evo Wi-Fi electric storage water heaters are conceived with a functional and innovative design that allows the installation of the product even in the tightest spaces.
- Shower Ready in 50 minutes: Shower-ready alerts are displayed on the front interface which shows when enough water has been heated to have the first shower. Its dual tank technology heats water faster than a traditional cylinder water heater, resulting in enough hot water to take a shower in only 50 minutes.
- “Eco Evo” Function: The innovative ECO EVO function memorises user habits to deliver hot water while saving up to 14% on energy bills. The product operates in compliance with top standards on energy efficiency within the electric water heating category.
- ABS Safety and Anti-Legionella System for complete peace of mind: A set of functions, including Anti-Overheating, Anti-Freezing and Dry Heating Self-Diagnosis, protect the unit in case of energy or water failures. Dry heating technology within the Velis Evo provides additional safety against short-circuits thanks to the heating elements being encased, thus avoiding direct contact with water. This also results in increased protection against limescale and quick replacement of the heating elements without draining the tank.
- Supplied with unventend installation kit.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B093LSJ814 |
| Best Sellers Rank | 41,101 in DIY & Tools ( See Top 100 in DIY & Tools ) 49 in Water Heaters & Parts |
| Brand | Ariston |
| Capacity | 45 litres |
| Colour | Black, White |
| Customer Reviews | 4.3 out of 5 stars 29 Reviews |
| Efficiency | B |
| Heat Output | 1.5 Kilowatts |
| Included Components | 12L expansion vessel, combination valve, discharge tundish, instruction manual, warranty certificate |
| Is Electric | Yes |
| Item Dimensions W x H | 50.6W x 77.6H centimetres |
| Item Type Name | Ariston VELIS EVO 45 L Electric Storage Water Heater, Inclusive Of Unvented Kit |
| Manufacture Year | 2020 |
| Manufacturer | Ariston |
| Manufacturer Warranty Description | 3 years. |
| Material | Acrylonitrile Butadiene Styrene |
| Maximum Pressure | 8 Bars |
| Model Number | 3626305 |
| Mount Type | Wall |
| Part Number | 3626305 |
| Power source | Corded Electric |
| Product dimensions | 50.6W x 77.6H centimetres |
| Special Features | Dual tank technology, Shower-ready alerts, ECO EVO function, ABS Safety and Anti-Legionella System |
| Special feature | Dual tank technology, Shower-ready alerts, ECO EVO function, ABS Safety and Anti-Legionella System |
| Style | VELIS EVO |
| Wattage | 1.5 KW |

## Product Details

- **Brand:** Ariston
- **Capacity:** 45 litres
- **Power source:** Corded Electric
- **Product dimensions:** 50.6W x 77.6H centimetres
- **Special feature:** Wi-Fi Connectivity, Twin Tank Technology, Anti-Legionella System

## Images

![Ariston VELIS EVO 45L Electric Water Heater, Twin Tank, Shower Ready, Eco Evo, Durable Water Boiler & Hot Water Dispenser, Ideal Electric Heater for Home & Bathroom Heater, Unvented Kit, UK Install - Image 1](https://m.media-amazon.com/images/I/51XeARKTxkS.jpg)
![Ariston VELIS EVO 45L Electric Water Heater, Twin Tank, Shower Ready, Eco Evo, Durable Water Boiler & Hot Water Dispenser, Ideal Electric Heater for Home & Bathroom Heater, Unvented Kit, UK Install - Image 2](https://m.media-amazon.com/images/I/514bGS3gx0S.jpg)
![Ariston VELIS EVO 45L Electric Water Heater, Twin Tank, Shower Ready, Eco Evo, Durable Water Boiler & Hot Water Dispenser, Ideal Electric Heater for Home & Bathroom Heater, Unvented Kit, UK Install - Image 3](https://m.media-amazon.com/images/I/61NJOkxxBAS.jpg)
![Ariston VELIS EVO 45L Electric Water Heater, Twin Tank, Shower Ready, Eco Evo, Durable Water Boiler & Hot Water Dispenser, Ideal Electric Heater for Home & Bathroom Heater, Unvented Kit, UK Install - Image 4](https://m.media-amazon.com/images/I/71xceHmuYyS.jpg)
![Ariston VELIS EVO 45L Electric Water Heater, Twin Tank, Shower Ready, Eco Evo, Durable Water Boiler & Hot Water Dispenser, Ideal Electric Heater for Home & Bathroom Heater, Unvented Kit, UK Install - Image 5](https://m.media-amazon.com/images/I/81f4HQpT25S.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: Can this unit be mounted horizontally?**
A: I’m not 100% sure but have see images of this mounted both vertically and horizontally, the mounting brackets on the back would allow for this. The Ariston Facebook page also has a video of it mounted both ways but would be worth messaging them directly to get a proper answer.

**Q: My flat has a 2 bars pressure, will that be enough if I replace my unvented inderect cylinder with the Velis?**
A: Good Morning,

Thank you for your question. A cold water supply pressure between 1 and 3.5 bar is required (if the mains pressure is above 3.5 bar a pressure reducing valve must be installed).

Regards.

**Q: Can 45l tank provide enough hot water for one bath. I live alone and have a separate electric shower.**
A: A standard bath is about 180ltr so maybe not really enough, if you set it to max temperature and mixed cold to increase the volume you may possibly push it to 63ltrs but this would be pretty shallow for bathing.

**Q: can you use this product if wi-fi is not always availible?**
A: Dear Customer, 

It can be used with or without Wi-Fi, the Wi-Fi is just an option.

Thanks.
Regards.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good
*by A***N on 22 October 2025*

Good quality

### ⭐⭐⭐⭐⭐ Great water heater let down by poor information about accesories supplied.
*by M***D on 22 March 2025*

Well made and works really well. A pity more details weren't given about the accessories, as the connections to unit etc are 15mm but the pressure reducing valve etc were 22mm.

### ⭐⭐⭐⭐⭐ Efficient and easy to fit
*by C***A on 2 February 2024*

We commited to running eco properties about a year ago and our electrician recommended this. Installation was easy and operating through app is easy too. This can power enough water to run our HMO which has 3 bathrooms and 4 sinks as well as kitchen water needs too. It can cope well and no one complains of not being able to shower In conjunction with pv solar panels remove gas completely) the over all savings ratio is worth it. Highly reccomend

## Frequently Bought Together

- Ariston VELIS EVO WIFI 45L Electric Water Heater, Twin Tank Technology, B Class ErP, Aqua Ariston Net App, Ideal Electric Heater for Home & Bathroom Heater, Water Boiler, Unvented Kit, UK Install
- Ariston 406802 KIT B 3.5 BAR Pressure REDUCING Valve, Bronze
- Ariston 406807 KIT C Discharge TUNDISH (15MM-22MM), Black

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-06*