---
product_id: 520267847
title: "Bosch Thermotechnology Tronic 4000 Electric Tankless Water Heater, 3.5 kW, 13 x 8.5 x 4.5\", 3500 watts, White"
brand: "bosch thermotechnology"
price: "VT103522"
currency: VUV
in_stock: true
reviews_count: 8
category: "Bosch Thermotechnology"
url: https://www.desertcart.vu/products/520267847-bosch-thermotechnology-tronic-4000-electric-tankless-water-heater-3-5
store_origin: VU
region: Vanuatu
---

# 3.5 kW power output 0.55 GPM low-flow activation Compact 13 x 8.5 x 4.5 inches Bosch Thermotechnology Tronic 4000 Electric Tankless Water Heater, 3.5 kW, 13 x 8.5 x 4.5", 3500 watts, White

**Brand:** bosch thermotechnology
**Price:** VT103522
**Availability:** ✅ In Stock

## Summary

> 🔥 Compact power, endless warmth — never run out of hot water again!

## Quick Answers

- **What is this?** Bosch Thermotechnology Tronic 4000 Electric Tankless Water Heater, 3.5 kW, 13 x 8.5 x 4.5", 3500 watts, White by bosch thermotechnology
- **How much does it cost?** VT103522 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/520267847-bosch-thermotechnology-tronic-4000-electric-tankless-water-heater-3-5)

## Best For

- bosch thermotechnology enthusiasts

## Why This Product

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

## Key Features

- • **Low-Flow Friendly:** Activates at just 0.55 GPM, perfect for modern low-flow faucets in offices, malls, and commercial spaces.
- • **Hassle-Free Maintenance:** Electric operation means no venting, no water storage, and virtually no upkeep—focus on what matters.
- • **Eco-Efficient Performance:** 96% thermal efficiency with zero standby heat loss saves you money and reduces your carbon footprint.
- • **Space-Savvy Under-Sink Fit:** Ultra-compact and lightweight, fits effortlessly under sinks to maximize your workspace without clutter.
- • **Instant Hot Water, Always Ready:** 3.5 kW tankless design delivers endless hot water on demand, eliminating wait times and wasted energy.

## Overview

The Bosch Thermotechnology Tronic 4000 is a 3.5 kW electric tankless water heater designed for point-of-use applications. Measuring a compact 13 x 8.5 x 4.5 inches, it fits neatly under sinks and activates at a low flow rate of 0.55 GPM, making it ideal for commercial and residential low-flow faucets. With 96% thermal efficiency and no standby heat loss, it offers energy savings and durability in a sleek white housing. Installation requires hardwiring and a licensed plumber. Backed by a 5-year limited warranty on the heat exchanger, it’s engineered for reliable, on-demand hot water with minimal maintenance.

## Description

Upgrade your commercial (or residential) water heating solution with the Bosch Tronic 4000 Electric Tankless Water Heater. This 9.5 kW under-sink tankless water heater is designed to provide an endless supply of instantaneous hot water to one or more sinks. This electric heater can be installed in a 360 degree orientation so you can position the unit in tight under counter spaces for a flexible, worry-free setup. The ultra compact and lightweight unit runs at 96% thermal efficiency, so stand-by loss is minimal. Plus, it does not require a temperature or pressure relief valve for your convenience. The roundagon Bosch DNA design provides a modern look that seamlessly blends in with existing decor when installed in a visible location and is built of durable plastic housing for long-lasting use. Due to the amperage requirement this item will be hard wired. It also includes a 5 year limited warranty on the copper heat exchanger and 2 year limited warranty for all other components so you know your purchase is protected (applicable to both Commercial and Residential use). This water heater measures 13" x 8.5" x 4.5", making it the perfect size for light commercial applications such as shopping malls, airports, stadiums and offices. Save space and energy with the Bosch Tronic 4000 Electric Tankless Water Heater! Bosch Thermotechnology is a leading source of high quality water heating and comfort systems. The company offers electric whole house and point-of-use water heaters, elcetric heatpump minisplit HVAC systems, and connected control thermostats. Bosch Thermotechnology is committed to being Simply Smart by offering products that work together as integrated systems that enhance quality of life in an ultra-efficient and environmentally friendly manner.

Review: For now I am happy - "now" did not last long. - I have installed this water heater little over 2 months. It replaced my previous heater Bosch AE12. My heater is located on the wall in boiler room and supply hot water into neighboring bathroom and kitchen. I had it installed by licensed plumber. In my case, the installation was not difficult. There are three settings for hot water temperature. It delivers sufficient amount of hot water. So far, so good. My previous Bosch unit lasted 8 years, hopefully this will be working for longer time too. Added June 6th 2025: Shortly after installation I noticed drop of water hanging down of connecting valve. Speed of dripping was negligible and I thought it's seeping from valve and eventually it stops. It did not and speed of dripping was increasing to making puddle of water on the floor. My plumber arrived, checked all connecting piping, removed the cover from heater and found the leak from inside of unit. He contacted Bosch, after few phone calls Bosch agreed to sending new unit. The new unit arrived, the plumber installed it and let's hope, this one will last longer then 2 1/2 month. Since installation requires licensed plumber, the cost for re-installing was skyrocketing.
Review: Bosch tankless water heater only get warm and is set at the hottest temperature. - The water takes longer to heat and does not get as hot as the previous Bosch heater that I had. This unit has a larger kilowatt rating, but it does respond as the previous heated. Sometimes it will not heat at all, and I shut the water off and turn it back on to make the water heat - luke warm. I was wondering if I can get a replacement or a different brand. I currently have 3 other Bosch heaters and they work fine but this newer replacement heater is not as good. Wayne Welle

## Features

- 3.5 KW TANKLESS WATER HEATER: Designed specifically for point of use applications to provide an endless supply of instantaneous hot water for one or more commercial or residential sinks
- COMPACT AND LIGHTWEIGHT: Effortlessly fits under sinks
- GREAT FOR LOW-FLOW FAUCETS: With as low as a 0.55 GPM activation flow rate, it's perfect for commercial low-flow faucets in shopping malls, airports, stadiums, offices, and more
- EFFICIENT AND DURABLE: 96% thermal efficiency with no standby heat loss to save you time, water, and money, and comes incased in a durable white plastic housing that blends in with existing décor
- EASY TO MAINTAIN: Because the heater runs on electricity and doesn't hold any water, there is no venting and virtually no maintenance required

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Bosch Thermotechnology |
| Color | White |
| Power Source | hard_wired |
| Product Dimensions | 8.5"W x 13"H |
| Special Feature | Lightweight |
| Wattage | 3500 watts |

## Product Details

- **Brand:** Bosch Thermotechnology
- **Color:** White
- **Power Source:** hard_wired
- **Product Dimensions:** 8.5"W x 13"H
- **Special Feature:** Lightweight

## Images

![Bosch Thermotechnology Tronic 4000 Electric Tankless Water Heater, 3.5 kW, 13 x 8.5 x 4.5", 3500 watts, White - Image 1](https://m.media-amazon.com/images/I/514n2kd6kKL.jpg)
![Bosch Thermotechnology Tronic 4000 Electric Tankless Water Heater, 3.5 kW, 13 x 8.5 x 4.5", 3500 watts, White - Image 2](https://m.media-amazon.com/images/I/71+Up4-+YyL.jpg)
![Bosch Thermotechnology Tronic 4000 Electric Tankless Water Heater, 3.5 kW, 13 x 8.5 x 4.5", 3500 watts, White - Image 3](https://m.media-amazon.com/images/I/71qVsU8vYFL.jpg)
![Bosch Thermotechnology Tronic 4000 Electric Tankless Water Heater, 3.5 kW, 13 x 8.5 x 4.5", 3500 watts, White - Image 4](https://m.media-amazon.com/images/I/911suJPUtBL.jpg)
![Bosch Thermotechnology Tronic 4000 Electric Tankless Water Heater, 3.5 kW, 13 x 8.5 x 4.5", 3500 watts, White - Image 5](https://m.media-amazon.com/images/I/81e52KTagJL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ For now I am happy - "now" did not last long.
*by M***. on April 26, 2025*

I have installed this water heater little over 2 months. It replaced my previous heater Bosch AE12. My heater is located on the wall in boiler room and supply hot water into neighboring bathroom and kitchen. I had it installed by licensed plumber. In my case, the installation was not difficult. There are three settings for hot water temperature. It delivers sufficient amount of hot water. So far, so good. My previous Bosch unit lasted 8 years, hopefully this will be working for longer time too. Added June 6th 2025: Shortly after installation I noticed drop of water hanging down of connecting valve. Speed of dripping was negligible and I thought it's seeping from valve and eventually it stops. It did not and speed of dripping was increasing to making puddle of water on the floor. My plumber arrived, checked all connecting piping, removed the cover from heater and found the leak from inside of unit. He contacted Bosch, after few phone calls Bosch agreed to sending new unit. The new unit arrived, the plumber installed it and let's hope, this one will last longer then 2 1/2 month. Since installation requires licensed plumber, the cost for re-installing was skyrocketing.

### ⭐ Bosch tankless water heater only get warm and is set at the hottest temperature.
*by W***. on July 23, 2024*

The water takes longer to heat and does not get as hot as the previous Bosch heater that I had. This unit has a larger kilowatt rating, but it does respond as the previous heated. Sometimes it will not heat at all, and I shut the water off and turn it back on to make the water heat - luke warm. I was wondering if I can get a replacement or a different brand. I currently have 3 other Bosch heaters and they work fine but this newer replacement heater is not as good. Wayne Welle

### ⭐⭐⭐⭐ Perfect "analog" heater
*by S***G on August 11, 2024*

I wanted to use an economically-priced electric solution, from a name I trusted, to preserve my propane supply for emergency back-up. I tried a used one, for a great price, but sadly, it mysteriously stopped making hot water a week after I installed it. I decided to just take a refund, since I wasn't willing to buy new right now.

## Frequently Bought Together

- Bosch Thermotechnology Tronic 4000 Electric Tankless Water Heater, 3.5 kW, 13 x 8.5 x 4.5", 3500 watts, White
- SHURFLO (255-313) 1/2" Twist-On Pipe Strainer

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-02-22*