Gas condensation boiler Viessmann Vitodens 111-F B1TG with built-in water tank, 25kW

Viessmann Vitodens 111-F B1TG – Floor-Standing Gas Condensing Combi Boiler with Integrated Tank (25 kW)

The Viessmann Vitodens 111-F B1TG (25 kW) is a floor-standing gas condensing combi boiler with an integrated DHW loading tank, designed for reliable heating and high-volume hot water comfort in a sleek, compact format. It’s ideal for modern homes with medium to high hot water demands.

Featuring a MatriX-Plus burner, Inox-Radial stainless steel heat exchanger, and Lambda Pro Plus combustion control, it delivers up to 94% seasonal efficiency and is certified for operation with up to 20% hydrogen.

Note: The B1TG version may be equipped with either a 130 L or dual 100 L layered tank, depending on the configuration and market. Please confirm locally.

Key Features and Benefits

✔ Output Range: 3.2 – 25.0 kW (modulating 1:8)
✔ Integrated DHW Tank: Layered storage tank (typically 100 + 100 L or 130 L)
✔ DHW Performance: Up to 18 L/min at ΔT 30 °C
✔ Energy Efficiency Class: A / A+ at 35 °C flow temperature
✔ Seasonal Efficiency (Hs): up to 94%
✔ Burner: MatriX-Plus + Lambda Pro Plus control
✔ Heat Exchanger: Inox-Radial – corrosion-resistant stainless steel
✔ Hydrogen Ready: Up to 20% H₂ blend
✔ Smart Control: Built-in Wi-Fi, works with ViCare app
✔ Quiet Operation: <35 dB(A)
✔ Dimensions (approx.): 600 × 595 × 1625 mm
✔ Weight: ~120–130 kg (depending on tank configuration)

Vitodens 111-F B1TG (25 kW) offers strong heating performance and high DHW capacity, combining compact design, smart controls, and A+ efficiency.