Viessmann Vitodens 100‑W 25kW B1HF System Boiler, Horizontal Flue & MagnaClean Pro2 Filter Pack

The Viessmann Vitodens 100‑W 25kW B1HF is a compact, high‑efficiency wall‑mounted system boiler designed to deliver reliable, economical heating for modern homes. Its stainless‑steel Inox-Radial heat exchanger ensures long-lasting performance, while the boiler’s quiet operation and slim profile make it ideal for properties where space and noise levels matter.

Key Features

• 25kW system boiler suitable for small to medium-sized homes
• High efficiency for reduced running costs
• Stainless‑steel heat exchanger for durability and long service life
• Quiet and compact wall‑mounted design
• Easy-to-use digital interface with smart control compatibility
• Horizontal flue kit included for straightforward fitting
• MagnaClean Pro2 filter included for enhanced system protection

What’s Included

• Viessmann Vitodens 100‑W 25kW B1HF System Boiler
• Horizontal Flue Kit
• MagnaClean Pro2 System Filter

Technical Overview (Light Specs)

• Output: 25kW
• Boiler Type: System (requires separate hot water cylinder)
• Fuel: Natural Gas (LPG‑ready depending on setup)
• Heat Exchanger: Stainless‑steel Inox‑Radial
• Mounting: Wall‑mounted
• Controls: Digital display with smart home compatibility

Installation

• Designed for quick wall‑mounted installation
• Horizontal flue kit included for ease of setup
• Suitable for sealed heating systems and smart thermostat integration
• Must be installed by a qualified engineer

Maintenance

• Annual servicing recommended
• Front-access layout for easy cleaning and servicing
• MagnaClean Pro2 filter helps reduce sludge buildup and extend system lifespan