Viessmann Vitodens 025-W 24kW BPKB Combi Boiler | 7098278

Description

The Viessmann Vitodens 025-W 24kW combi is a compact, pre-commissioned gas condensing boiler designed for living areas with limited space, sharing the same Inox-Radial stainless steel heat exchanger and MatriX-Plus burner as the rest of the Vitodens range.

With no side clearance required and all connections accessible from the front, this entry point to the Vitodens combi range is built for quick installation in smaller apartments and single-family homes.

24kW

Combi output

92%

ErP space heating efficiency

Class A

Energy efficiency

1:5

Modulation range

12 l/min

DHW flow rate (ΔT 35°C)

34kg

Weight

🛈

Please Note: This boiler must be connected using the Viessmann 60/100mm concentric flue system, tested and CE-designated as one structural unit with the boiler in accordance with DVGW-VP 113. Only this flue system may be used.

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Good to Know: Registering the installation on the Viessmann installer portal (VPlus) within 30 days extends the standard 2-year warranty to 5 years, alongside a 10-year warranty on the Inox-Radial heat exchanger.

Pre-commissioned for fast installation

Only two button pushes are needed to complete commissioning, minimising time on site.

No side clearance required

All components and connections are accessible from the front, making it well suited to tight cupboard installations.

Inox-Radial stainless steel heat exchanger

Provides high corrosion resistance and a long operational life, backed by a 10-year heat exchanger warranty.

MatriX-Plus burner system

Ensures consistently clean combustion across a 1:5 modulation range.

Compact 700 x 400 x 300mm size

One of the smallest wall-mounted boilers in its output class, ideal for apartments and modernisation projects.

Low operating noise

Rated at 48 dB(A) for the 24kW model, keeping the boiler unobtrusive in living spaces.

Specification

Performance

Boiler type

Gas condensing combi (Type BPKB-24)

Rated heat output (50/30°C)

5.0 – 20.0 kW

Rated heat output (80/60°C)

4.5 – 19.2 kW

Combi DHW output

24kW

DHW draw-off rate (ΔT 35°C)

12 l/min

ErP space heating efficiency

92%

Energy efficiency class

A

Modulation range

1:5

Dimensions & Connections

Height

700mm

Width

400mm

Depth

300mm

Weight

34kg

Flue gas connection

60mm

Ventilation air connection

100mm

Warranty

Standard warranty

2 years

Registered warranty (VPlus)

5 years

Heat exchanger warranty

10 years

What size home suits the 24kW Vitodens 025-W?

A 24kW combi is generally suited to a flat or smaller 2-3 bedroom home with a single bathroom — a proper heat loss calculation against radiator count and insulation standard is the reliable way to confirm sizing.

Is this boiler pre-commissioned?

Yes, the Vitodens 025-W range is supplied pre-commissioned, with Viessmann stating only two button presses are needed to complete the installation process.

What warranty does the 24kW model carry?

2 years as standard, extending to 5 years when the installation is registered on the Viessmann installer portal (VPlus) within 30 days, plus a 10-year warranty on the heat exchanger.

Does the Vitodens 025-W support weather compensation?

Yes, the control unit is weather compensation and OpenTherm compatible when paired with the appropriate outdoor sensor or room control.

BTU Calculator

BTU & WATT Calculator

Room Dimensions

Length (in m):

Width (in m):

Height (in m):

Room Type

Living Room

Bedroom

Kitchen

Bathroom

Conservatory

Hallway

Glazing Type

Single Glazed

Double Glazed

Triple Glazed

External Walls

0 Wall

1 Wall

2 Walls

3 Walls

4 Walls

Insulation Level

Poor

Average

Good (New Build)

Calculate

Required Heating

0

Watts

0

BTUs