Our Website no longer supports Internet Explorer

As the Internet Explorer has severe security breaches and shows modern websites only to an extent we are no longer supporting it.


It is possible that our website will not be shown correctly or at all in your browser. Please download a modern browser like Google Chrome; Microsoft Edge; Mozilla Firefox; Opera or Apple Safari.

Wall-mounted gas boiler

FGB

The quality solution for particularly high heating standards. Suitable for apartments and smaller apartment blocks.

FGB conventional gas boiler

The FGB wall mounted gas condensing boiler operates with the most advanced condensing technology, which employs heat recovery to make highly efficient use of gas as a fuel. This is good for the environment, saves valuable energy and provides optimum heating convenience. The appliance is compatible with the WOLF control system and, using the ISM7e interface module, you can also operate your heating system at any time with your smartphone or PC via the Smartset portal.

This highly compact and space saving appliance is mounted on the wall, for example in the kitchen or in a fitted cupboard, and is also ideal for modernisation. The FGB-K combi version is characterised by exceptionally high DHW convenience. No more cold water surprises – thanks to very short heat-up times and consistent hot water temperatures.

WOLF FGB

Do you have any questions?

It can be complex and time-consuming to find the right solution for your home. We can help you to understand everything that is really relevant to your project in only a few minutes.

The WOLF FGB units score with these advantages

Flexible use

Compact dimensions

Exceptionally compact dimensions enable a particularly space saving installation, even in rooms where space is at a premium.

Living room friendly

Appealing design for seamless integration into your living space.

Smartset advantages

Regulation from a single source

Perfectly networked

We offer you a common control system for all WOLF system modules. This means that there is nothing to stand in the way of perfect networking and control (even with the help of a smartphone app).

Easy handling

Very simple and straightforward controls directly on the boiler make appliance operation as easy as child's play

WOLF FGB

Technology you can rely on

Proven heating

Advanced condensing technology saves on energy costs. Seasonal efficiency lies up to 94 %.

Perfectly in tune with you.

Made in Germany
& German engineering

Put your trust in premium quality from our Bavarian development and production site. We manufacture durable, robust and reliable appliances. 

Made in Germany
& German engineering

Put your trust in premium quality from our Bavarian development and production site. We manufacture durable, robust and reliable appliances. 

WOLF know-how
Over 50 years of experience

We have been developing indoor environment solutions for decades. Always in line with our motto "Perfectly in tune with you".

WOLF know-how
Over 50 years of experience

We have been developing indoor environment solutions for decades. Always in line with our motto "Perfectly in tune with you".

All-rounders & experts
Heating, ventilation & air handling

We supply complete solutions from a single source. Benefit from a perfectly coordinated system with a single control unit and a single expert advisor. 

All-rounders & experts
Heating, ventilation & air handling

We supply complete solutions from a single source. Benefit from a perfectly coordinated system with a single control unit and a single expert advisor. 

Smart homes
Modern homes

Smart home technology lets you control your heating system, ventilation and many other appliances from wherever you are.

Smart homes
Modern homes

Smart home technology lets you control your heating system, ventilation and many other appliances from wherever you are.

Made in Germany
& German engineering

Put your trust in premium quality from our Bavarian development and production site. We manufacture durable, robust and reliable appliances. 

WOLF know-how
Over 50 years of experience

We have been developing indoor environment solutions for decades. Always in line with our motto "Perfectly in tune with you".

All-rounders & experts
Heating, ventilation & air handling

We supply complete solutions from a single source. Benefit from a perfectly coordinated system with a single control unit and a single expert advisor. 

Smart homes
Modern homes

Smart home technology lets you control your heating system, ventilation and many other appliances from wherever you are.

Technical details

FGB-24
FGB-K-24
FGB-28
FGB-K-28
FGB-35
FGB-K-35
Rated heating output at 50/30°C min./max.
kW
5.3 - 20.7
5.3 - 20.7
5.3 - 27.3
5.3 - 27.3
7.5 - 34.9
7.5 - 34.9
Width
mm
-
-
408
408
-
-
Height
mm
-
-
310
310
-
-
Depth
mm
-
-
650
650
-
-
Weight
kg
27
27
27
27
28
28

Technical details

  • FGB-24

  • FGB-K-24

  • FGB-28

  • FGB-K-28

  • FGB-35

  • FGB-K-35

    Rated heating output at 50/30°C min./max.
    kW
    5.3 - 20.7
    5.3 - 20.7
    5.3 - 27.3
    5.3 - 27.3
    7.5 - 34.9
    7.5 - 34.9
    Width
    mm
    -
    -
    408
    408
    -
    -
    Height
    mm
    -
    -
    310
    310
    -
    -
    Depth
    mm
    -
    -
    650
    650
    -
    -
    Weight
    kg
    27
    27
    27
    27
    28
    28

    You may be interested in

    Advice: Understanding gas heating

    Guide: Replacing gas heating

    Guide: Net vs. gross calorific value