---
product_id: 316484365
title: "PRO1 ECO 100 L Electric Storage Water Heater, Inclusive Of Unvented Kit, B class ErP Rating, WaterPlus Tecnology, Titanshield Tecnology, Manufactured to be installed in UK - 3820021."
brand: "ariston"
price: "422557 som"
currency: KGS
in_stock: true
reviews_count: 7
category: "Ariston"
url: https://www.desertcart.kg/products/316484365-pro1-eco-100-l-electric-storage-water-heater-inclusive-unvented
store_origin: KG
region: Kyrgyzstan
---

# 14% energy savings with Eco Evo 16% more hot water via WaterPlus tech TitanShield anti-corrosion tank protection PRO1 ECO 100 L Electric Storage Water Heater, Inclusive Of Unvented Kit, B class ErP Rating, WaterPlus Tecnology, Titanshield Tecnology, Manufactured to be installed in UK - 3820021.

**Brand:** ariston
**Price:** 422557 som
**Availability:** ✅ In Stock

## Summary

> 🔥 Elevate your daily comfort with smart, sustainable hot water — because your home deserves the best!

## Quick Answers

- **What is this?** PRO1 ECO 100 L Electric Storage Water Heater, Inclusive Of Unvented Kit, B class ErP Rating, WaterPlus Tecnology, Titanshield Tecnology, Manufactured to be installed in UK - 3820021. by ariston
- **How much does it cost?** 422557 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/316484365-pro1-eco-100-l-electric-storage-water-heater-inclusive-unvented)

## 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

- • **Safety First:** Comprehensive ABS safety package plus Anti-Legionella system heats water to 65°C to keep your family safe.
- • **Built to Last:** TitanShield’s titanium enamel and magnesium anode combo guard against rust and corrosion for long-term durability.
- • **Smart Energy Saver:** Eco Evo learns your habits to cut energy bills by up to 14%, making every drop count.
- • **Space-Savvy Design:** Slim 35.3 cm width and easy retrofit kit fit perfectly in flats or small homes without extra wall work.
- • **Maximized Hot Water:** WaterPlus tech ensures 16% more hot water availability by smartly separating cold and hot water layers.

## Overview

The Ariston PRO1 ECO 100 V UK EU is a 100-litre electric water heater engineered for energy efficiency and durability. Featuring the Eco Evo function, it adapts to user habits to save up to 14% on energy bills. Its patented WaterPlus technology increases hot water availability by 16%, while TitanShield technology protects the tank from corrosion with a titanium enamel layer and magnesium anode. Designed for safety with an ABS package and Anti-Legionella system, it fits compact spaces with a slim 35.3 cm width and includes an installation kit for easy replacement.

## Description

Shop Ariston PRO1 ECO 100 L Electric Storage Water Heater, Inclusive Of Unvented Kit, B class ErP Rating, WaterPlus Tecnology, Titanshield Tecnology, Manufactured to be installed in UK - 3820021.. Free delivery on eligible orders of £20 or more.

Review: More than expectations - Unvented solves the pressure through taps
Review: Perfect for Flats and small houses. - Purchased to replace Ariston ST100 which is no longer available unfortunately. Taller than original heater so had to alter existing pipework and resize connector to undersize of heater. Why Ariston changed the layout and sizes baffles me except if it was to bring in line with European heaters. Fitted heater in 3 hours and now working as expected. Heater elements are always suspect on these heaters as they corrode away.

## Features

- “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.
- WaterPlus patented technology: Ariston's groundbreaking WaterPlus technology keeps the incoming cold water at the bottom of the tank, reducing the mix with stored hot water, for up to 16% more hot water availability.
- TitanShield technology for tank protection: The inner surface of the tank is enamelled with a layer of titanium, an anti-corrosion and rust-resistant material, which prevents the surface from corroding, even when in contact with warm water. Titanium’s natural properties are boosted by the action of a large magnesium anode that stops the oxidation reactions on the tank’s inner surface, prolonging the life of the water heater.
- Total Safety: Pro 1 water heaters have passed all safety tests necessary to meet the standards required by EC directives. The ABS safety package offers protection for both the product and its users. Furthermore, the included Anti Legionella system performs a complete cycle of heating to a temperature of 65° C to sanitize and remove any bacteria present in the accumulated water.
- Suitable to any space: Pro1, with a width of only 35,3 cm, has been designed to fit any space. The innovative installation kit allows the replacement of the boiler (of the same dimensions) without having to drill the wall again.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B093LTVYN4 |
| Best Sellers Rank | 52,383 in DIY & Tools ( See Top 100 in DIY & Tools ) 84 in Water Heaters & Parts |
| Brand | Ariston |
| Capacity | 100 litres |
| Colour | Black, White |
| Country of Origin | Italy |
| Customer Reviews | 4.7 out of 5 stars 36 Reviews |
| Efficiency | B |
| Included Components | 12L expansion vessel, combination valve, discharge tundish, instruction manual, warranty certificate |
| Is Electric | Yes |
| Item Dimensions W x H | 47W x 96.2H centimetres |
| Item Type Name | Ariston PRO1 ECO 100 L Electric Storage Water Heater, Inclusive Of Unvented Kit, B class ErP Rating, WaterPlus Tecnology, Titanshield Tecnology, Manufactured to be installed in UK - 3820021. |
| Item height | 96.2 centimetres |
| Manufacturer | Ariston |
| Manufacturer Warranty Description | 3 years. |
| Material | Acrylonitrile Butadiene Styrene |
| Model Number | 3820021 |
| Mount Type | Wall |
| Power source | Corded Electric |
| Product dimensions | 47W x 96.2H centimetres |
| Special Features | TitanShield, “Eco Evo” Function |
| Special feature | TitanShield, “Eco Evo” Function |
| Style | Essential |
| Unit Count | 1.0 Count |
| Voltage | 240 Volts (AC) |

## Product Details

- **Brand:** Ariston
- **Capacity:** 100 litres
- **Power source:** Corded Electric
- **Product dimensions:** 47W x 96.2H centimetres
- **Special feature:** TitanShield, “Eco Evo” Function

## Images

![PRO1 ECO 100 L Electric Storage Water Heater, Inclusive Of Unvented Kit, B class ErP Rating, WaterPlus Tecnology, Titanshield Tecnology, Manufactured to be installed in UK - 3820021. - Image 1](https://m.media-amazon.com/images/I/51m0d6VttLS.jpg)

## Questions & Answers

**Q: Can this heater be installed up in a loft**
A: Good Morning,

Thank you for your questions. As long as the installation follows UK building regulations and manufacturer guidelines there is no restriction as to where this product is installed inside a property.

BR

**Q: Can it be installed inside an airing cupboard in the bathroom?**
A: Good Morning,
This product can be installed in an airing cupboard as long as it offers enough space for the unit and the installation kits as well as any spacing requirements outlined in the manufacturers manual.
Thanks for your question.
Kind Regards.

**Q: Would the 50L one be OK for a one bed flat, with enough for 2 consecutive showers once heated and on during the showers?**
A: Yes but an 80 liter would be better.

**Q: Can I install this unit in Spain?**
A: Good Morning,
Please note this product is produced and certified for the UK. We cannot guarantee this product meets the legal building requirements for another country, neither can we uphold any warranty if installed abroad. To ensure your water heater meets all necessary criteria for an installation in Spain please make sure you buy a product offered by Ariston Spain.
Thank you for your question.
Kind Regards.

## Customer Reviews

### ⭐⭐⭐⭐⭐ More than expectations
*by Z***N on 13 April 2024*

Unvented solves the pressure through taps

### ⭐⭐⭐⭐⭐ Perfect for Flats and small houses.
*by S***N on 18 November 2021*

Purchased to replace Ariston ST100 which is no longer available unfortunately. Taller than original heater so had to alter existing pipework and resize connector to undersize of heater. Why Ariston changed the layout and sizes baffles me except if it was to bring in line with European heaters. Fitted heater in 3 hours and now working as expected. Heater elements are always suspect on these heaters as they corrode away.

### ⭐⭐⭐⭐ Good
*by N***H on 3 February 2024*

Good

## Frequently Bought Together

- Ariston PRO1 ECO 100 L Electric Storage Water Heater, Inclusive Of Unvented Kit, B class ErP Rating, WaterPlus Tecnology, Titanshield Tecnology, Manufactured to be installed in UK - 3820021.
- Ariston Water Heater Expansion Vessel Kit A
- Ariston 406802 KIT B 3.5 BAR Pressure REDUCING Valve, Bronze

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.kg/products/316484365-pro1-eco-100-l-electric-storage-water-heater-inclusive-unvented](https://www.desertcart.kg/products/316484365-pro1-eco-100-l-electric-storage-water-heater-inclusive-unvented)

---

*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-02-07*