Description
The KASTOR KARHU 40 kW is a high-performance, wood-burning sauna heater engineered in Finland and built for large residential and commercial sauna spaces. Designed for users who want an authentic Nordic sauna experience, this premium stove delivers powerful, even heat and exceptionally soft steam thanks to its generous 55 kg (121 lb) stone capacity.
Crafted with durability and efficiency in mind, the KARHU 40 features an internal fire loading system and a panoramic high-temperature glass door that showcases the natural flame while maintaining optimal combustion. Its advanced heat distribution ensures fast warm-up times, excellent heat retention, and reduced wood consumption — making it one of the most efficient wood-fired sauna heaters available in the U.S.
With a compact, easy-to-integrate design and long-term reliability, the KASTOR KARHU 40 kW is an outstanding choice for homeowners and commercial operators looking to upgrade to a premium wood-burning sauna stove. Perfect for large traditional saunas, wellness retreats, luxury home spas, and small commercial facilities seeking authentic Finnish performance and exceptional steam output.
