Gas condensation boiler Viessmann Vitodens 100-W B1KF combined, 25kW

Viessmann Vitodens 100-W B1KF – Gas Condensing Combi Boiler (25 kW)

The Viessmann Vitodens 100-W B1KF (25 kW) is a high-performance wall-mounted gas condensing boiler, designed for both space heating and domestic hot water in one compact unit. With its modulating burner, smart connectivity, and high output, it's ideal for family homes or multi-bathroom households.

Featuring the MatriX-Plus burner, Inox-Radial stainless steel heat exchanger, and Lambda Pro Plus combustion control, the B1KF ensures low emissions, quiet operation, and long-term reliability.

Key Features and Benefits

✔ Output Range: 3.2 – 25.0 kW (modulating, 1:8)
✔ DHW Flow Rate: Up to 14.1 L/min at ΔT 30 °C
✔ Energy Efficiency Class: A / A+ at 35 °C
✔ Seasonal Efficiency (Hs): up to 94%
✔ Heat Exchanger: Inox-Radial – durable and corrosion-resistant
✔ Burner: MatriX-Plus + Lambda Pro Plus for stable combustion
✔ Hydrogen Ready: Supports up to 20% H₂ in the gas mix
✔ Smart Control: Built-in Wi-Fi, compatible with ViCare app
✔ Quiet Operation: Under 35 dB(A)
✔ Compact Dimensions: 400 × 360 × 700 mm
✔ Weight: 36 kg

Vitodens 100-W B1KF (25 kW) is a powerful and smart combi boiler for homes that demand strong performance, efficiency, and modern comfort in one compact design.