Viessmann Vitodens 025-W 28kW BPKB Combi Boiler | 7098279

Description

The Viessmann Vitodens 025-W is a compact, pre-commissioned gas condensing combi boiler built for living areas with limited space, combining the same Inox-Radial stainless steel heat exchanger and MatriX-Plus burner technology found across the wider Vitodens range.

With no side clearance required and all connections accessible from the front, the 28kW model is designed to be quick and straightforward to install — Viessmann states that only two button presses are needed to complete commissioning on a pre-commissioned unit.

28kW

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 51 dB(A) for the 28kW model, keeping the boiler unobtrusive in living spaces.

Specification

Performance

Boiler type

Gas condensing combi (Type BPKB-28)

Rated heat output (50/30°C)

5.0 – 25.0 kW

Rated heat output (80/60°C)

4.5 – 22.7 kW

Combi DHW output

28kW

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

How is the 28kW model different from the 24kW Vitodens 025-W?

Both share the same footprint, control system and heat exchanger technology; the 28kW model simply delivers a higher rated heat output (up to 25kW at 50/30°C) and DHW output, suited to slightly larger properties or higher simultaneous hot water demand.

Is the Vitodens 025-W suitable for a large family home?

It's positioned by Viessmann as a compact solution for smaller living areas, apartments and modernisation projects — for larger properties with higher heat loss, the Vitodens 050-W or 100-W ranges offer higher output options.

Does registering the boiler extend the warranty?

Yes, registering the installation on the Viessmann installer portal (VPlus) within 30 days extends the standard 2-year warranty to 5 years, with a 10-year warranty on the heat exchanger.

What flue system does the Vitodens 025-W use?

It uses the same 60/100mm concentric flue system as the rest of the Vitodens wall-mounted range, CE-designated as one structural unit with the boiler.

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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)

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