Narvi
Narvi Kuru Wood Burning Sauna Heater
Narvi Kuru Wood Burning Sauna Heater
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Description
Description
The Narvi Kuru is a no-frills Finnish wood-burning sauna heater that brings Narvi’s quality-first ethos to an entry-level price, with a black painted steel casing, a glazed door and cool wooden handles. Its low build fits more easily into smaller or awkward spaces and spreads the steam lower and more evenly within the sauna, making it a natural choice for a garden or wilderness sauna cabin. It is offered as the Kuru 14 for steam rooms of 8–14 m³ and the Kuru 20 for 10–20 m³, with three water-tank versions of the Kuru 20 for warm washing water: the VSE with a 16 litre tank behind the firebox, and the VSO and VSV with an 18 litre tank on the right or left side. A through-the-wall version of the Kuru 14 is listed separately, and a suitable flue kit and 35–40 kg of sauna stones are purchased separately.
Features
Technical Specification
| All models | |
| Height | 650/675 mm (adjustment ±15 mm) |
| Connective flue outer diameter | 119 mm |
| Flue connection height from floor | 473 mm without adjustable feet; 500 mm with feet (±15 mm) |
| Flue centre from rear edge (top connection) | 120 mm |
| Safety clearances (sides / front / above / rear) | 250 / 500 / 1,350 / 250 mm (1,000 mm maintenance area recommended in front) |
| Casing | Black painted steel |
| Kuru 14 | |
| Steam room volume | 8–14 m³ |
| Width × depth (without handle) | 420 × 475 mm |
| Weight (without stones) | 49 kg |
| Stone capacity (Ø 10–15 cm) | 35 kg |
| Firebox cover thickness | 4 mm |
| Flue gas mass flow | 11.9 g/s |
| Kuru 20 | |
| Steam room volume | 10–20 m³ |
| Width × depth (without handle) | 460 × 475 mm |
| Weight (without stones) | 55 kg |
| Stone capacity (Ø 10–15 cm) | 40 kg |
| Firebox cover thickness | 6 mm |
| Flue gas mass flow | 13 g/s |
| Kuru 20 VSE (rear water tank) | |
| Steam room volume | 10–20 m³ |
| Width × depth (without handle) | 460 × 640 mm |
| Weight (without stones) | 65 kg |
| Water tank volume | 16 litres |
| Stone capacity (Ø 10–15 cm) | 40 kg |
| Firebox cover thickness | 6 mm |
| Kuru 20 VSO / VSV (side water tank, right / left) | |
| Steam room volume | 10–20 m³ |
| Width × depth (without handle) | 590 × 475 mm |
| Weight (without stones) | 60 kg |
| Water tank volume | 18 litres |
| Stone capacity (Ø 10–15 cm) | 40 kg |
| Firebox cover thickness | 6 mm |
Installation
The Kuru connects to the chimney from the top via a 119 mm connective flue, with the connection centred 120 mm from the rear edge and set 473–500 mm above the floor depending on the feet. The smoke flue must meet class T600, a modular flue must be CE-marked, and the recommended minimum draught is 12 Pa. The heater may stand directly on a concrete floor at least 50 mm thick; combustible or tiled floors, or floors with underfloor heating, require an installation base with a metal plate extending 400 mm in front of the firebox, and clearances can be reduced with protective screens as set out in the manual. We recommend the Kota Insulated Steel Flue/Chimney Kit. Installation must follow the installation manual in the Downloads tab and local building regulations, and we recommend that the heater is fitted by a suitably qualified installer.
Sauna stones
The Kuru 14 takes 35 kg and the Kuru 20 models 40 kg of 10–15 cm sauna stones, sold separately; olivine dolerite or vulcanite stones are recommended, washed before use and stacked loosely so air can circulate between them.
Brand
Narvi Oy is a Finnish maker of wood-burning sauna heaters. Narvi products are CE tested and carry the Finnish Key Flag, awarded to products designed and made in Finland.
Warranty
The warranty on this Narvi sauna heater is 2 years in private use.
Delivery & Returns
Delivery
We offer fast and reliable delivery to customers across the UK and beyond. For full details on shipping times and costs, please review our delivery policy.
Returns
We offer hassle-free returns within 30 days of purchase, so you can shop with complete confidence. For details, see our returns policy.
Warranty & Quality Promise
We are committed to delivering products of the highest quality, for details surrounding warranty please contact us.
Description
The Narvi Kuru is a no-frills Finnish wood-burning sauna heater that brings Narvi’s quality-first ethos to an entry-level price, with a black painted steel casing, a glazed door and cool wooden handles. Its low build fits more easily into smaller or awkward spaces and spreads the steam lower and more evenly within the sauna, making it a natural choice for a garden or wilderness sauna cabin. It is offered as the Kuru 14 for steam rooms of 8–14 m³ and the Kuru 20 for 10–20 m³, with three water-tank versions of the Kuru 20 for warm washing water: the VSE with a 16 litre tank behind the firebox, and the VSO and VSV with an 18 litre tank on the right or left side. A through-the-wall version of the Kuru 14 is listed separately, and a suitable flue kit and 35–40 kg of sauna stones are purchased separately.
Features
| All models | |
| Height | 650/675 mm (adjustment ±15 mm) |
| Connective flue outer diameter | 119 mm |
| Flue connection height from floor | 473 mm without adjustable feet; 500 mm with feet (±15 mm) |
| Flue centre from rear edge (top connection) | 120 mm |
| Safety clearances (sides / front / above / rear) | 250 / 500 / 1,350 / 250 mm (1,000 mm maintenance area recommended in front) |
| Casing | Black painted steel |
| Kuru 14 | |
| Steam room volume | 8–14 m³ |
| Width × depth (without handle) | 420 × 475 mm |
| Weight (without stones) | 49 kg |
| Stone capacity (Ø 10–15 cm) | 35 kg |
| Firebox cover thickness | 4 mm |
| Flue gas mass flow | 11.9 g/s |
| Kuru 20 | |
| Steam room volume | 10–20 m³ |
| Width × depth (without handle) | 460 × 475 mm |
| Weight (without stones) | 55 kg |
| Stone capacity (Ø 10–15 cm) | 40 kg |
| Firebox cover thickness | 6 mm |
| Flue gas mass flow | 13 g/s |
| Kuru 20 VSE (rear water tank) | |
| Steam room volume | 10–20 m³ |
| Width × depth (without handle) | 460 × 640 mm |
| Weight (without stones) | 65 kg |
| Water tank volume | 16 litres |
| Stone capacity (Ø 10–15 cm) | 40 kg |
| Firebox cover thickness | 6 mm |
| Kuru 20 VSO / VSV (side water tank, right / left) | |
| Steam room volume | 10–20 m³ |
| Width × depth (without handle) | 590 × 475 mm |
| Weight (without stones) | 60 kg |
| Water tank volume | 18 litres |
| Stone capacity (Ø 10–15 cm) | 40 kg |
| Firebox cover thickness | 6 mm |
Installation
The Kuru connects to the chimney from the top via a 119 mm connective flue, with the connection centred 120 mm from the rear edge and set 473–500 mm above the floor depending on the feet. The smoke flue must meet class T600, a modular flue must be CE-marked, and the recommended minimum draught is 12 Pa. The heater may stand directly on a concrete floor at least 50 mm thick; combustible or tiled floors, or floors with underfloor heating, require an installation base with a metal plate extending 400 mm in front of the firebox, and clearances can be reduced with protective screens as set out in the manual. We recommend the Kota Insulated Steel Flue/Chimney Kit. Installation must follow the installation manual in the Downloads tab and local building regulations, and we recommend that the heater is fitted by a suitably qualified installer.
Sauna stones
The Kuru 14 takes 35 kg and the Kuru 20 models 40 kg of 10–15 cm sauna stones, sold separately; olivine dolerite or vulcanite stones are recommended, washed before use and stacked loosely so air can circulate between them.
Brand
Narvi Oy is a Finnish maker of wood-burning sauna heaters. Narvi products are CE tested and carry the Finnish Key Flag, awarded to products designed and made in Finland.
Warranty
The warranty on this Narvi sauna heater is 2 years in private use.
Delivery
We offer fast and reliable delivery to customers across the UK and beyond. For full details on shipping times and costs, please review our delivery policy.
Returns
We offer hassle-free returns within 30 days of purchase, so you can shop with complete confidence. For details, see our returns policy.
Warranty & Quality Promise
We are committed to delivering products of the highest quality, for details surrounding warranty please contact us.
