B⁴ Steel, Keramik und Keramik+

Design: Sebastian Herkner

Our latest B⁴ fireplace was designed by Sebastian Herkner, just like the B3 model. The B⁴ has a spacious combustion chamber with a large viewing panel, which gives you an unobstructed view of the beautifully calm burning fire. The B⁴ can be used in virtually any room thanks to its wide power range (6 kW, 8 kW and 10 kW). Intuitive control and an extremely high build quality are a given with any Bullerjan product.

The B⁴ is available in three basic versions differing in look and function. Moreover, you have a wide range of interesting ways in which to adapt your B⁴ to your interior design.

Die Highlights

Main product features

    • Elegant timeless design by Sebastian Herkner

Large combustion chamber with large viewing window and effective window washing system
Three models available in distinctive different designs: Steel, Keramik, and Keramik+
B⁴ Steel – very slim, in classic black
B⁴ Keramik – elegant contemporary design, ceramic cover plate and / or tea tray optional
B⁴ Keramik+ – Sebastian Herkner’s interpretation of a traditional design.
The wide variety of colours and surface materials also allow for very modern configurations
And the B⁴ Keramik+ with fireclay filling, is a compact storage stove with very high storage capacity (total weight: 326 kg)
Individual design options through a wide choice of ceramic glazes and -surfaces
Optional ceramic tea-shelf (also available for B⁴ steel)
Choice between light or black cladding for the combustion chamber
Optional steel door for the wood compartment
Four height adjustors allow you to adjust the stove to uneven floors
Flue connection either at the rear or on top of theB⁴

Function and quality – Made in Germany

      • Self-closing and -locking door with large viewing window


      • Simple control of the fire through precisely coordinated air supply regulation


      • Extremely solid combustion chamber made of 4 mm thick teel


      • Firebox lined with high-quality coloured vermiculite


      • Potential wear parts, can be replaced even after years, if necessary


      • External air supply connection (if required) behind or below


      • High effiency factor of 82 %


      • Energy Efficiency Class A+


      • Warranty extension (total 5 years) to the stove body on registering the product


      • Comprehensive service offering by the Bullerjan specialist dealers or Bullerjan customer service

Technical variations

      • Optional complete independence of room air (Raumluftunabhängig RLU) in accordance with DIBt at no extra costs making it suitable for low energy and passive houses with controlled ventilation system.


      • Proven nominal heat output of 6, 8 and 10 kW
AbmessungenB⁴ StahlB⁴ KeramikB⁴ Keramik +B⁴ Keramik + mit Speicher
Tiefe45,0 cm45,0 cm45,0 cm45,0 cm
Breite55,0 cm60,0 cm67,0 cm67,0 cm
Höhe125,0 cm125,0 cm125,0 cm125,0 cm
Gesamtgewicht242 kg276 kg283 kg326 kg
Brennraumtiefe34,5/35,0/41,0 cm34,5/35,0/41,0 cm34,5/35,0/41,0 cm34,5/35,0/41,0 cm
AbgasstutzenØ 15 cmØ 15 cmØ 15 cmØ 15 cm
ZuluftstutzenØ 10 cmØ 10 cmØ 10 cmØ 10 cm
Höhe Mitte Abgasstutzen
hinten (ca.)
113,0 cm113,0 cm113,0 cm113,0 cm
Höhe Mitte Zuluftstutzen (ca.)14,3 cm14,3 cm14,3 cm14,3 cm
Abstand Rückwand/Mitte Abgasstutzen
14 cm14 cm14 cm14 cm
Abstand zu brennbaren Materialien
30 cm30 cm30 cm30 cm
Seiten neben dem Ofen20 cm20 cm20 cm20 cm
Seiten bis zu 40 cm vor dem Ofen
50 cm50 cm50 cm50 cm
Vorne ab Sichtscheibe120 cm120 cm120 cm120 cm
Unten0 cm0 cm0 cm0 cm
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