---
product_id: 419820417
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: "₩318814"
currency: KRW
in_stock: true
reviews_count: 8
category: "Kb Tools"
url: https://www.desertcart.kr/products/419820417-instant-water-heater-for-in-line-sinks-wash-basins-showers
store_origin: KR
region: South Korea
---

# 3.7kW rapid heating power Instant hot water, no cold waits 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:** ₩318814
**Availability:** ✅ In Stock

## Summary

> 🔥 Instant warmth, zero compromise — your daily luxury upgrade!

## 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?** ₩318814 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/419820417-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

- • **Space-Savvy Wall Mount:** Sleek, compact design fits seamlessly in kitchens, bathrooms, or showers without cluttering your space.
- • **Instant Heat, Zero Wait:** Enjoy hot water the moment you turn the tap—no more freezing waits or wasted water.
- • **Energy-Smart DAFI System:** Cut energy costs with an advanced, efficient heating element designed for modern eco-conscious homes.
- • **Versatile Sink-to-Shower Use:** Perfectly engineered for sinks, wash basins, and even showers—hot water wherever you need it.
- • **Professional-Grade Reliability:** Trusted by installers and users alike for safe, durable performance that lasts years.

## Overview

The Formaster Instant Water Heater is a compact, wall-mounted, tankless electric unit delivering 3.7kW of energy-efficient hot water on demand. Designed for sinks, wash basins, and showers, it eliminates cold water waits and reduces energy waste, making it ideal for modern, space-conscious homes. Easy to install by professionals, it combines rapid heating with a sleek footprint, perfect for millennial managers seeking convenience and sustainability.

## 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 | B09V7CV3J3 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 56,274 in DIY & Tools ( See Top 100 in DIY & Tools ) 91 in Water Heaters & Parts |
| Colour | White |
| Customer Reviews | 3.9 3.9 out of 5 stars (76) |
| Date First Available | 9 Mar. 2022 |
| Included Components | Adapter |
| Installation method | Wall-Mounted |
| Item Weight | 1 kg |
| Item model number | IP3.5kW |
| Manufacturer | Formaster |
| Plug profile | Wall |
| Product Dimensions | 8.6 x 9.1 x 19.5 cm; 1 kg |
| Size | 3.7kW |
| Special Features | Energy Efficient |
| Style | Indoor Installation |
| Voltage | 230 Volts |

## Product Details

- **Brand:** KB Tools
- **Colour:** White
- **Power source:** Corded Electric
- **Special feature:** Energy Efficient
- **Voltage:** 230 Volts

## 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)

## 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.

## Frequently Bought Together

- Instant Water Heater for in-Line Sinks, Wash Basins, and Showers, Tankless Electric Heating Element, Energy Efficient Supply System, Compact Space Saver, Wall Mounted
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**Shop now:** [https://www.desertcart.kr/products/419820417-instant-water-heater-for-in-line-sinks-wash-basins-showers](https://www.desertcart.kr/products/419820417-instant-water-heater-for-in-line-sinks-wash-basins-showers)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-01-24*