--- product_id: 92636801 title: "Vitodens 100-W, B1KA-125 Wall-Mounted Gas-Fired Condensing Boiler" brand: "viessmann" price: "āļŋ19313" currency: THB in_stock: false reviews_count: 3 url: https://www.desertcart.co.th/products/92636801-vitodens-100-w-b1ka-125-wall-mounted-gas-fired-condensing store_origin: TH region: Thailand --- # 100 watts 5.63 GPM 125,000 BTU Vitodens 100-W, B1KA-125 Wall-Mounted Gas-Fired Condensing Boiler **Brand:** viessmann **Price:** āļŋ19313 **Availability:** ❌ Out of Stock ## Summary > ðŸ”Ĩ 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?** āļŋ19313 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/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 - â€Ē **Compact Design:** Space-saving wall-mounted installation for modern living. - â€Ē **German Engineering:** Trust in quality with Viessmann's renowned manufacturing standards. - â€Ē **Reliable Performance:** Enjoy peace of mind with a manufacturer-backed warranty. - â€Ē **Eco-Friendly Operation:** Reduce your carbon footprint with advanced condensing technology. - â€Ē **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. --- ## 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.co.th/products/92636801-vitodens-100-w-b1ka-125-wall-mounted-gas-fired-condensing](https://www.desertcart.co.th/products/92636801-vitodens-100-w-b1ka-125-wall-mounted-gas-fired-condensing) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-29*