Kratki Koza K8 Tunnel: A Budget-Friendly Double-Sided Classic

The Kratki Koza K8 Tunnel Stove offers a striking double sided design, solid cast iron build, and 9kW output, making it a versatile buyers choice for open-plan living or room-dividing installations.

March 22, 2014
By Reece Toscani
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Stove Spotlights

A Striking Cast Iron Centrepiece

The Kratki Koza K8 Tunnel Stove is one of the most eye-catching double sided models currently available on the European stove market. Unlike most woodburners, which offer a single viewing window, the K8 features large glass doors on both the front and rear. This creates a true “tunnel stove” effect, allowing you to enjoy the flames from two different rooms or from either side of an open-plan living space. The result is not only a practical source of heat but also a dramatic architectural feature that transforms how you use and experience your home.

Crafted entirely from cast iron, the Koza K8 carries an unmistakable sense of solidity. The curved legs and arched doors hint at traditional styling, while the sheer size of the glass panels feels more contemporary, giving the stove a distinctive hybrid look. This balance of heritage and modernity makes the K8 suitable for a wide variety of settings, whether you want a bold centrepiece in a modern home or a classically inspired addition to a period property.

Power and Performance

Beyond its looks, the Kratki Koza K8 delivers impressive performance. Rated at 9kW of nominal heat output, this stove is capable of warming medium to larger rooms with ease. The double-sided design also plays a role in distributing warmth more evenly, particularly when used in a dividing wall between two spaces. Instead of confining the heat to a single area, the K8 allows it to spread naturally throughout your living environment.

The stove is designed to run on seasoned hardwood, with a straightforward air control system that makes it easy to manage the burn rate. Although it keeps things simple, the K8 does not compromise on efficiency, ensuring that your fuel is used effectively to provide a consistent and lasting heat output. For households wanting a reliable, hardworking woodburner that doesn’t need constant adjustment, this is a real advantage.

Design Versatility

One of the biggest strengths of the Koza K8 Tunnel Stove is its versatility. It can be installed in a central position within an open-plan room, acting as a dramatic freestanding divider. This creates a warm focal point visible from all sides and helps define separate living zones while maintaining a sense of openness. Alternatively, the K8 can be built into a wall opening between two adjoining rooms, giving both spaces the benefit of the same fire.

This flexibility makes the stove particularly attractive to homeowners looking to make a statement with their heating choice. Whether your home leans toward traditional or modern design, the K8 adapts easily and always delivers a strong visual presence. Few stoves at this price point offer such variety in installation possibilities, which is part of what makes the Koza K8 stand out in 2015’s marketplace.

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Solid Cast Iron Construction

Durability is a hallmark of Kratki stoves, and the K8 is no exception. The heavy-duty cast iron body ensures excellent heat retention and long-lasting strength. Cast iron has always been valued in stove construction for its ability to hold heat and radiate it slowly, even after the fire has died down. This means that once warmed, the K8 continues to release gentle heat into the room, making it both efficient and comfortable for family living.

The cast iron detailing also contributes to the stove’s aesthetic. From the decorative legs to the robust door frames, the material gives the stove a reassuringly traditional feel. Combined with the expansive glass windows, the overall impression is one of both elegance and substance — a piece of heating equipment that is as much about lifestyle as it is about function.

A Standout Choice for 2015

In a market where many stoves follow a similar single-sided format, the Kratki Koza K8 Double Sided Stove offers something refreshingly different. It combines solid construction, impressive heat output, and an adaptable design with the ability to connect spaces and enhance the ambience of your home in unique ways. Priced competitively for a stove of its size and style, it makes the idea of owning a double-sided woodburner more accessible than ever before.

For homeowners seeking more than just a source of warmth, the K8 represents an opportunity to invest in a stove that truly transforms your living environment. Whether used to link two rooms or as a central feature in an open-plan layout, this stove delivers both visual impact and reliable performance. In short, the Koza K8 Tunnel is a model that proves practical heating and striking design can go hand in hand.

About This Spotlight

This Stove Spotlight was originally published on the Fireplace Products blog back in 2014. As part of our acquisition of the Fireplace Products YouTube Channel, we also gained access to these historic posts, which were written by myself and my team. To preserve the archive and maintain continuity with the videos, we’ve re-formatted and re-uploaded them here using their original post dates.

If you’d like to explore our latest reviews and features, you can find all of our most recent Stove Spotlights here.

Have you ever owned a Kratki stove, or would you consider an affordable double-sided model like the Koza K8 Tunnel today?
👉 Leave a comment below and share your thoughts — we’d love to hear from you.

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Old Woodburners

Reece Toscani

Reece has over two decades in the fireplace and stove world — testing, reviewing, and occasionally getting covered in soot, all in the name of wood-fired home heating. He cuts through the nonsense, busts the myths, and shares straight-talking advice to help you enjoy your stove without the confusion. From Fireplace Products to Redefining Woodburners, if it burns wood, he’s probably tested it, fixed it, or argued about it. Now, through Woodburner Insights, he shares that experience with the world — both here and on YouTube.