The Viessmann Vitodens 025-W 28kW Gas Condensing Combi Boiler is a compact, wall-mounted condensing combination boiler designed to provide efficient central heating and domestic hot water from a single appliance. With a 28kW output, 12 L/min domestic hot water flow rate and ErP A rating, it delivers reliable heating and hot water performance for residential applications.
The Vitodens 025-W features a corrosion-resistant stainless steel Inox-Radial heat exchanger, providing efficient heat transfer and durable operation. Its compact 400mm width × 700mm height × 300mm depth makes it suitable for installations where space is limited, including replacement projects with restricted installation space.
The boiler uses a MatriX-Plus burner and high-efficiency circulation pump, with a modulation range down to 1:5 to help match boiler output to heating demand. A backlit LCD display provides straightforward operation, while the boiler is supplied pre-commissioned to simplify installation.
Key Features
28kW gas condensing combi boiler
ErP A-rated efficiency
12 L/min domestic hot water flow rate
Stainless steel Inox-Radial heat exchanger
MatriX-Plus burner
Modulation range down to 1:5
High-efficiency circulation pump
Backlit LCD display
Compact wall-mounted design
Pre-commissioned for straightforward installation
Vitopearlwhite finish
Suitable for internal installation
Designed for modernisation and replacement projects
Specifications
Brand: Viessmann
Model: Vitodens 025-W
Boiler Type: Gas Condensing Combi Boiler
Heat Output: 28kW
DHW Flow Rate: 12 L/min at ΔT 35°C
ErP Rating: A
Space Heating Efficiency: 92%
Fuel Type: Natural Gas
Mounting: Wall
Installation Location: Internal
Colour: Vitopearlwhite
Width: 400mm
Height: 700mm
Depth: 300mm
Weight: 34kg
MPN: 7098279
Flue: Not included
Flue Connection: 60mm
Ventilation Air Connection: 100mm