Kuru 14 Through-the-Wall Wood-Burning Sauna Heater — Authentic Finnish Heat, Delivered with Distinction

There is something deeply restorative about the crackling warmth of a wood-fired sauna — a ritual refined over centuries in Finland's forests, now available at the heart of your own wellness sanctuary. The Kuru 14 through-the-wall wood-burning sauna heater brings that purist experience to your home, combining masterful Finnish craftsmanship with a thoughtful, clutter-free design that lets you focus entirely on the ritual of heat. Loaded from outside the sauna room, this heater keeps your interior pristine and your experience uninterrupted.

Key Features

• Through-the-Wall Firebox Loading: The firebox is accessed from an adjoining room or outdoor space, keeping your sauna floor clean, clutter-free, and completely dedicated to relaxation — no logs, no ash, no interruption to your wellness ritual.
• Glazed Cast-Iron Door: A beautifully crafted cast-iron door with a heat-resistant glass panel allows you to watch the mesmerising glow of a live fire — creating ambience that extends well beyond the sauna itself.
• Authentic Finnish Manufacture: Bearing the coveted Finnish Key Flag Symbol, this heater is designed and produced in Finland, with over 95% of production occurring within the country. It is the hallmark of a genuinely Finnish-made product, not an imitation.
• CE Certified & Safety Compliant: Fully CE tested, this heater meets rigorous European safety standards, giving you complete peace of mind with every session.
• Minimalist Steel Housing: A sleek black-painted steel body exudes quiet, Scandinavian sophistication — understated enough to complement any sauna interior, from rustic cedar to contemporary design.
• Ergonomic Wooden Handles: Thoughtfully designed wooden handles ensure comfortable, safe operation even at temperature, blending function with refined detail.
• Stone Capacity up to 35kg: Accommodates up to 35kg of sauna stones for sustained, enveloping heat — we recommend 10–15cm Olivine Diabase or Vulcanite stones for optimum thermal performance.
• 2-Year Warranty (Private Use): Backed by a two-year manufacturer's warranty for private residential use, reflecting the confidence behind every Narvi product.

Technical Specifications

Dimensions & Capacity

Please refer to the product datasheet or contact our team for precise dimensional specifications. This heater is engineered for sauna rooms of appropriate cubic volume — our experts are happy to advise on suitability for your space.

Construction & Materials

The Kuru 14 features a robust black-painted steel housing paired with a glazed cast-iron door, combining thermal eff

*Please note that some of the images are for illustration purposes only. The flue kit should be purchased separately. We recommend the Kota Insulated Steel Flue/ Chimney Kit.

Note: Sauna stones to be purchased separately

This heater requires up to 35kg of sauna stones. We recommend using 10-15cm Olivine Diabase or Vulcanite Sauna Stones for optimal performance.

Warranty

The warranty on this Narvi Sauna Heater is 2 years in private use.

Product Disclaimers

All Narvi sauna products are CE tested and bear the Finnish Key Flag Symbol. This is awarded to sauna equipment that is made and designed in Finland, where over 95% or more of the production must be within Finland itself. There are many brands that claim to be made in Finland but are actually made in the Far East or Russia and merely assembled or labelled in Finland. Watch out for these symbols as a mark of an authentic, Finnish-made, safe, quality product:

As part of Warmliving Sauna's Endurance Ethos, we only deal in products that are market leaders in quality. We commit ourselves to search exhaustively for the highest quality authentic Finnish sauna products.

Please note, we recommend that sauna heaters should be installed by a suitably qualified builder/plumber. Warmliving Limited accepts no liability for loss or injury caused by the incorrect installation of your sauna heater.