Stoves and fireplaces
Free-standing stove
BKO 42-42 Flat
Product benefits:
- Quick installation thanks to prefabricated assembly kit
- Minimal space requirement
- Original BRUNNER BKH fireplace insert
- Fast and powerful warm air output
- Cladding made of raw steel for a modern, urban design
- Patented bowl firing system for especially clean and efficient combustion
- Optionally retrofittable catalytic converter for emission reduction
- Generous view of the fire from one side
- Ideal for modern living spaces with clean, linear architecture
Main features:
Move your mouse over the icons to obtain more information about the individual main features.
The lifting door can be moved up easily and quietly
Releases heat quickly and directly into the room as warm air
Automatically controls the combustion process for efficient and clean heating
Simple door mechanism for convenient cleaning of the glass pane
High-quality cast iron components for stability, durability, and premium value
Choice of combustion chamber made of durable chamotte or solid cast iron
Optional version for reducing the radiation area
Supplies the stove with combustion air from outside – ideal for modern, airtight buildings
Optional left or right door hinge position – flexible to plan
- Green
- Catalytic converter capable
Technical data
& Downloads
BRUNNER Free standing stoves
The BRUNNER BKO free-standing stove stands for honest materials and genuine warmth. Its casing made of pure raw steel gives it a distinctive character – robust, durable and authentic. Inside, state-of-the-art BRUNNER combustion technology with patented bowl firing ensures clean and even heat. Whether in the flat or corner version, the BKO is always a statement – representing architecture with character and warmth with style.
FAQ Free standing stoves
- What is the difference between the BKO and other fireplace stoves?
The BRUNNER BKO stands out clearly from conventional fireplace stoves — both in combustion performance and in design. Inside the BKO is a high-quality BRUNNER BKH fireplace insert with a recessed combustion chamber, the key to particularly efficient and clean burning.
Both the insert and the overall construction reflect BRUNNER’s renowned quality. The solid raw steel casing gives the BKO its distinctive character, setting it apart visually and technically from ordinary stoves. Inside and out, the BKO represents the highest standards of material and craftsmanship.
- How complex is the installation of the BKO?
The fireplace stove is delivered as a preassembled system unit. This means all components — from the heating insert to the steel casing — are precisely matched at the factory. This allows the installer to set it up quickly and accurately, with no major adjustments needed.
- How do I care for the raw steel surface?
Raw steel is a living material — its surface changes over time. With a bit of care oil (for example, Ballistol), it stays protected and develops a unique patina that gives every stove its individual character. Small scratches or color variations are part of the material’s natural look.
- How can the BKO be individually customized?
There are several technical options — such as a firebox made of fireclay or cast iron, a heat-reflective glass panel, and storage solutions with cast or modular heat storage rings. An exhaust gas catalyst can also be retrofitted.
Brunner Craftsmen search
Are you interested in a stove or heating system from BRUNNER? Please contact one of our craftsmen partners.
