---
product_id: 92636801
title: "Vitodens 100-W, B1KA-125 Wall-Mounted Gas-Fired Condensing Boiler"
brand: "viessmann"
price: "KSh297717"
currency: KES
in_stock: false
reviews_count: 3
url: https://www.desertcart.co.ke/products/92636801-vitodens-100-w-b1ka-125-wall-mounted-gas-fired-condensing
store_origin: KE
region: Kenya
---

# 100 watts 5.63 GPM 125,000 BTU Vitodens 100-W, B1KA-125 Wall-Mounted Gas-Fired Condensing Boiler

**Brand:** viessmann
**Price:** KSh297717
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Heat Up Your Home, Not Your Bills! 🌍

## Quick Answers

- **What is this?** Vitodens 100-W, B1KA-125 Wall-Mounted Gas-Fired Condensing Boiler by viessmann
- **How much does it cost?** KSh297717 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/92636801-vitodens-100-w-b1ka-125-wall-mounted-gas-fired-condensing)

## Best For

- viessmann enthusiasts

## Why This Product

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

## Key Features

- • **Compact Design:** Space-saving wall-mounted installation for modern living.
- • **German Engineering:** Trust in quality with Viessmann's renowned manufacturing standards.
- • **Reliable Performance:** Enjoy peace of mind with a manufacturer-backed warranty.
- • **Eco-Friendly Operation:** Reduce your carbon footprint with advanced condensing technology.
- • **Efficient Heating Power:** Experience unparalleled warmth with 125,000 BTUs of heat output.

## Overview

The Vitodens 100-W, B1KA-125 is a high-efficiency wall-mounted gas-fired condensing boiler, designed for indoor installation. With a powerful 125,000 BTU output and a compact design, it combines German engineering with eco-friendly technology, ensuring reliable heating for your home.

## Description

Gas-fired wall-mounted condensing boiler with modulating stainless steel cylinder burner and Inox-Radial heat exchanger surface. Features: All the benefits of a Vitodens 100-W boiler, plus built-in on-demand domestic hot water (DHW) – no need for an additional storage tank DHW at the snap of your fingers all day long! Up to 3.5 GPM Optimized load matching with up to 6:1 turndown ratio Energy-saving and low-cost, on-demand indirect-fired DHW production Conforms to NSF/ANSI 372 for Low Lead Content Quality you can count on! Stainless steel heat exchanger, built-in pressure bypass and 150 psig working pressure rating (on DHW side only) Reliable and consistent DHW supply with built-in DHW temperature and flow sensors Complete space / DHW heating management by boiler control, powerful built-in 3-speed pump and diverting valve

## Features

- wall-mounted, gas-fired condensing boiler with modulating stainless steel MatriX cylinder burner
- 125,000 BTU's
- Reliable and Manufacturer Warranty Backed
- Made in Germany

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Viessmann |
| Wattage | 100 watts |
| Voltage | 120 Volts |
| Maximum Flow Rate | 5.63 Gallons Per Minute |
| Heat Output | 125000 British Thermal Units |
| Style | Indoor Installation |
| Manufacturer | Viessmann |
| Item Weight | 98 pounds |
| Is Discontinued By Manufacturer | No |
| Certification | NSF, ANSI |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![Vitodens 100-W, B1KA-125 Wall-Mounted Gas-Fired Condensing Boiler - Image 1](https://m.media-amazon.com/images/I/112LQDtMjML.jpg)
![Vitodens 100-W, B1KA-125 Wall-Mounted Gas-Fired Condensing Boiler - Image 2](https://m.media-amazon.com/images/I/619UYNzHMhL.jpg)
![Vitodens 100-W, B1KA-125 Wall-Mounted Gas-Fired Condensing Boiler - Image 3](https://m.media-amazon.com/images/I/41DMQK8gomL.jpg)
![Vitodens 100-W, B1KA-125 Wall-Mounted Gas-Fired Condensing Boiler - Image 4](https://m.media-amazon.com/images/I/41okDKbtcwL.jpg)
![Vitodens 100-W, B1KA-125 Wall-Mounted Gas-Fired Condensing Boiler - Image 5](https://m.media-amazon.com/images/I/31fdJGunpJL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Perfect compact boiler and inline water heater.
  

*by F***Y on Reviewed in the United States on May 20, 2019*

This Vitoden is excellent.  But not everyone can install it.  Rather difficult for the average installer. Works efficiently and I am very happy with it.  I purchased a dual zone manifold from FloorHeat which works great with it.  Only issue was that the control board was faulty and the rep from FloorHeat is a little slow in grasping the issue.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Good
  

*by V***V on Reviewed in the United States on December 22, 2019*

👍👍👍👍👍

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Ecxellent product
  

*by T***M on Reviewed in the United States on January 24, 2020*

I installed the predecessor W1B1-35 with Combiplus. Only install the Vitodens with the original Viessmann low loss header (LLH). I also use the Viessmann Opentherm-10V interface to manage the demand and modulation of the Vitodens with a Tekmar house control system.

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**Shop now:** [https://www.desertcart.co.ke/products/92636801-vitodens-100-w-b1ka-125-wall-mounted-gas-fired-condensing](https://www.desertcart.co.ke/products/92636801-vitodens-100-w-b1ka-125-wall-mounted-gas-fired-condensing)

---

*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-03-18*