The Viessmann Vitodens 025-W 24kW Gas Condensing Combi Boiler is a compact, wall-mounted condensing boiler designed to provide efficient central heating and domestic hot water from a single appliance. With a 24kW domestic hot water output, 12 L/min draw-off rate at ΔT 35°C and ErP A rating, it offers reliable performance for residential heating applications.
The Vitodens 025-W features a durable stainless steel Inox-Radial heat exchanger, designed to provide efficient heat transfer and long-term corrosion resistance. Its compact 400mm width, 700mm height and 300mm depth make it suitable for installations where space is limited.
A backlit LCD display with simple controls makes the boiler straightforward to operate, while the MatriX-Plus burner and high-efficiency circulation pump contribute to efficient boiler operation. The boiler also has a modulation range down to 1:5, allowing the output to adjust according to heating demand.
The boiler is supplied as a standalone appliance, so the appropriate flue kit and controls should be selected separately unless purchasing a specific PlumbNation boiler-and-flue package.
Key Features
24kW domestic hot water output
Gas condensing combination boiler
ErP A-rated
12 L/min DHW draw-off rate at ΔT 35°C
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
Suitable for internal installation
Pre-commissioned for straightforward installation
Vitopearlwhite finish
Specifications
Brand: Viessmann
Model: Vitodens 025-W
Boiler Type: Gas Condensing Combi Boiler
Part Number / MPN: 7098278
Heat Output: 24kW DHW
Rated Heating Output Range: 5–25kW at 50/30°C
Heating Output Range: 4.5–19.2kW at 80/60°C
Energy Efficiency Class: A
Space Heating Efficiency: 92%
Fuel: Gas
Mounting: Wall-mounted
Installation: Internal
Width: 400mm
Height: 700mm
Depth: 300mm
Weight: 34kg
Flue Connection: 60mm
Ventilation Air Connection: 100mm
Colour: Vitopearlwhite