---
product_id: 421430389
title: "– Instant Water Heater for in-Line Sinks, Wash Basins, and Showers, Tankless Electric Heating Element, Energy Efficient Supply System, Compact Space Saver, Wall Mounted"
brand: "kb tools"
price: "€ 217.73"
currency: EUR
in_stock: true
reviews_count: 8
category: "Kb Tools"
url: https://www.desertcart.sk/products/421430389-instant-water-heater-for-in-line-sinks-wash-basins-showers
store_origin: SK
region: Slovakia
---

# 7.5 kW rapid heating power 6 L/min steady flow rate Compact 8.6x9.1x19.5 cm wall-mount design – Instant Water Heater for in-Line Sinks, Wash Basins, and Showers, Tankless Electric Heating Element, Energy Efficient Supply System, Compact Space Saver, Wall Mounted

**Brand:** kb tools
**Price:** € 217.73
**Availability:** ✅ In Stock

## Summary

> 🔥 Hot water on demand, compact style, energy-wise living!

## Quick Answers

- **What is this?** – Instant Water Heater for in-Line Sinks, Wash Basins, and Showers, Tankless Electric Heating Element, Energy Efficient Supply System, Compact Space Saver, Wall Mounted by kb tools
- **How much does it cost?** € 217.73 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/421430389-instant-water-heater-for-in-line-sinks-wash-basins-showers)

## Best For

- kb tools enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Use Case:** Ideal for kitchens, bathrooms, and showers—one unit, multiple hot water needs covered.
- • **Energy-Smart Heating:** DAFI advanced system cuts energy waste, saving you money and reducing your carbon footprint.
- • **Space-Savvy Wall Mount:** Sleek, compact design fits effortlessly in tight spaces—perfect for modern minimalist homes.
- • **Instant Hot Water, Zero Wait:** Enjoy immediate warmth at your sink or shower—no more cold water shocks or wasted time.
- • **Professional-Grade Reliability:** Built for long-lasting performance with recommended certified installation for peace of mind.

## Overview

The Formaster Instant Water Heater delivers 7.5 kW of tankless electric heating power, providing up to 6 liters per minute of hot water instantly. Its compact wall-mounted design (8.6 x 9.1 x 19.5 cm) saves space while the advanced DAFI energy system ensures efficient, eco-friendly operation. Perfect for sinks, wash basins, and showers, this unit offers professional-grade reliability and energy savings for modern homes.

## Description

Shop Instant Water Heater for in-Line Sinks, Wash Basins, and Showers, Tankless Electric Heating Element, Energy Efficient Supply System, Compact Space Saver, Wall Mounted. Free delivery on eligible orders of £20 or more.

Review: Instant hot water and compact unit - been installed and working now for a few months. I replaced an existing one that lasted about 7 years. Great Instant Hot water.
Review: Delivered promptly - I bought this to save energy heating litres of water by the combi boiler to reach the bathrooms miles away, so you end up washing hands in cold water anyway and all the hot in the pipes is wasted. In that respect, this will be a great saving, as it does heat quickly to warm enough for hand and face washing, but the flow rate is necessarily slow. At 3.75 kW, it seemed to blow a 13amp fused spur and cut out, so it may need a higher rated connection. We did that and it works. We've plumbed it in a way that can easily switch back to boiler if necessary, or f energy prices ever revert to something like normal.

## Features

- Home Electric Water Heater – Ideal for the kitchen or bathroom these tankless water heaters make it easy to get hot water the moment you turn the knob, so you can avoid having to wait for it to heat up just for some tea or a quick shower.
- Advanced DAFI Energy System – Our energy-efficient DAFI sink water heater is safe, effective, and heats small and large water options including kitchen sinks, bathroom wash basins, and even your shower, so you can enjoy hot water seamlessly.
- Avoid Ice-Cold Water – Say goodbye to jumping into the shower too soon and freezing your body or waiting forever to get hot enough water for a cup of tea. This instant heating system provides clean, fresh, hot water in real time.
- Professional Installation Recommended – We also recommend that KB Tools home water heaters be installed by trained plumbers or certified water heater installers to ensure safe, effective operation. Check your local area for additional support.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09V6YH19Q |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 59,648 in DIY & Tools ( See Top 100 in DIY & Tools ) 120 in Water Heaters & Parts |
| Colour | White |
| Customer Reviews | 3.9 3.9 out of 5 stars (76) |
| Date First Available | 9 Mar. 2022 |
| Flow rate | 6 Litres Per Minute |
| Included Components | Adapter |
| Installation method | Wall-Mounted |
| Item Weight | 1.17 kg |
| Item model number | IP7.5kW |
| Manufacturer | Formaster |
| Plug profile | Wall |
| Product Dimensions | 8.6 x 9.1 x 19.5 cm; 1.17 kg |
| Size | 7.3kW |
| Special Features | Energy Efficient |
| Style | Indoor Installation |
| Voltage | 230 Volts |
| Wattage | 7.5E+3 |

## Product Details

- **Brand:** KB Tools
- **Colour:** White
- **Power source:** Corded Electric
- **Special feature:** Energy Efficient
- **Wattage:** 7.5E+3

## Images

![– Instant Water Heater for in-Line Sinks, Wash Basins, and Showers, Tankless Electric Heating Element, Energy Efficient Supply System, Compact Space Saver, Wall Mounted - Image 1](https://m.media-amazon.com/images/I/71dMHYRiEuL.jpg)

## Questions & Answers

**Q: In order to have hot water in the kitchen sink and bathroom sink, do I need to install two of these? Many Thanks**
A: One for each should be ok I have 1 under the kitchen sink yit is fine

**Q: What size water fittings/adapters are supplied and or needed ?**
A: I fitted these a while ago and can quite remember. What I can remember is I used 15mm JGSpeed fit hose and standard fittings for it. 
Not much help but I hope it’s of use. The device comes with a selection of fitments.

**Q: Is that tap suitable to heat the water in a mobile/portable sink that’s not plumbed in just using electric?**
A: The water would need to be pumped to the heater and you would also need 220 volts.
But in theory yes it should work fine.

**Q: Does this unit need a pump or is one built in?**
A: no it does not need a pump as it is a direct feed  from  the cold water supply

## Customer Reviews

### ⭐⭐⭐⭐⭐ Instant hot water and compact unit
*by H***1 on 6 January 2026*

been installed and working now for a few months. I replaced an existing one that lasted about 7 years. Great Instant Hot water.

### ⭐⭐⭐⭐ Delivered promptly
*by M***O on 18 December 2022*

I bought this to save energy heating litres of water by the combi boiler to reach the bathrooms miles away, so you end up washing hands in cold water anyway and all the hot in the pipes is wasted. In that respect, this will be a great saving, as it does heat quickly to warm enough for hand and face washing, but the flow rate is necessarily slow. At 3.75 kW, it seemed to blow a 13amp fused spur and cut out, so it may need a higher rated connection. We did that and it works. We've plumbed it in a way that can easily switch back to boiler if necessary, or f energy prices ever revert to something like normal.

### ⭐⭐⭐⭐⭐ What a fantastic water heater, best so far.
*by M***E on 20 July 2025*

What a fantastic water heater, I purchased the 7 KW and it's almost too hot to wash your hands using a free running mixer tap, simple to install (if you can plumb) and wire, the one it replaces was half the temperature and more expensive and I nearly brought it again, so glad I prought this one.

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**Shop now:** [https://www.desertcart.sk/products/421430389-instant-water-heater-for-in-line-sinks-wash-basins-showers](https://www.desertcart.sk/products/421430389-instant-water-heater-for-in-line-sinks-wash-basins-showers)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-01-22*