The Viessmann Vitodens 050-W B0KA 35kW Gas Combi Boiler is a compact, wall-mounted condensing combination boiler designed to deliver efficient central heating and domestic hot water on demand. With a 35kW DHW output, 14.3 L/min hot water flow rate and ErP A rating, it provides strong performance for homes with higher hot water requirements.
Its ultra-compact 400mm wide × 700mm high × 300mm deep design allows the boiler to be installed in a kitchen cupboard or other space-conscious location. At 37kg, it offers a practical solution for replacement installations where available space is restricted.
The Vitodens 050-W features built-in WiFi, allowing connection to the ViCare App for remote monitoring and control. It also has an LCD touchscreen control unit and is compatible with the ViCare wireless thermostat, which is available separately.
Inside, the boiler uses a durable stainless steel Inox-Radial heat exchanger, together with a MatriX-Plus burner and Lambda Pro combustion control. The wide 1:10 modulation range allows the boiler to adjust its output according to heating demand, helping support efficient and consistent operation.
Key Features
35kW gas combination boiler
ErP A-rated efficiency
14.3 L/min domestic hot water flow rate
Built-in WiFi
ViCare App compatible
ViCare wireless thermostat compatible
LCD touchscreen control
Stainless steel Inox-Radial heat exchanger
MatriX-Plus burner
Lambda Pro combustion control
Up to 1:10 modulation range
Natural gas and LPG compatible
No additional LPG conversion kit required
Ultra-compact design
Suitable for kitchen cupboard installation
Wall-mounted installation
High-efficiency variable-speed circulation pump
8-litre expansion vessel
Quiet operation
Pre-heat option for domestic hot water
Specifications
Brand: Viessmann
Model: Vitodens 050-W B0KA
Boiler Type: Gas Combi Boiler
Heat Output: 35kW
DHW Flow Rate: 14.3 L/min
ErP Rating: A
Efficiency: 92%
Fuel: Natural Gas / LPG
Mounting: Wall
Installation Location: Internal
Colour: White
Width: 400mm
Height: 700mm
Depth: 300mm
Weight: 37kg
MPN: 7098603
Flue: Not included
Controller: None included
WiFi: Built-in
Flue Connection: 60mm
Combustion Air Connection: 100mm
What’s Included
Viessmann Vitodens 050-W B0KA 35kW Gas Combi Boiler – 7098603
Integral control unit with WiFi interface
Integral safety valves
Variable-speed high-efficiency circulation pump
3-way valve
8-litre expansion vessel
Valve fittings
Boiler flue connection
Fully plumbed and wired appliance