HUUM HIVE Flow LS Sauna Stove with Firebox Extension- Complete Package Options

Exterior Firebox Loading — Load firewood from outside the sauna room for a cleaner, quieter, and more refined sauna experience

Advanced Heat Efficiency — Innovative HUUM airflow technology directs up to 75% of heat into the sauna for faster heating and lower wood consumption

Soft, Luxurious Steam — Massive 330 lb stone capacity delivers gentle, long-lasting heat and rich traditional löyly

Scandinavian Craftsmanship — Handcrafted in Estonia with minimalist Nordic design and premium stainless steel construction

Eco-Conscious Wood Burning — Cleaner combustion system reduces emissions while maintaining authentic wood-fired sauna performance

Built for Luxury Sauna Spaces — A striking architectural centerpiece for premium indoor and outdoor sauna installations

Complete Package Options Available — Customize your setup with curated chimney, stone, and installation package selections

• HUUM HIVE Flow LS Wood-Burning Sauna Stove — Premium high-efficiency wood-fired sauna heater with exterior firebox extension
• Metal Grate, Heat Resistant Glove, Splints, Metal Fixing Plates (2), Ash Grate, Cleaning Hatches (2), Ash Drawer
  
• Extended Firebox System — Allows convenient wood loading from outside the sauna room for a cleaner sauna experience
  
• Large Capacity Stone Basket — Engineered to hold up to 330 lbs of sauna stones for soft, long-lasting steam
  
• Tempered Glass Fire Door — Heat-resistant viewing window creates a warm fireplace ambiance during sauna sessions
  
• Advanced Clean-Burning Firebox Technology — Designed for improved heat efficiency, lower emissions, and reduced wood consumption
  
• Adjustable Installation Legs — Integrated leveling feet for easier positioning and setup
  
• Installation & Operation Manual — Official HUUM setup and operating documentation
  
• Manufacturer Warranty Coverage — Backed by HUUM’s limited residential warranty
  

Sauna stones, chimney kits, heat shields, and additional installation accessories may be selected separately through the package options above.

• Model: HUUM HIVE Flow LS
  
• Heater Type: Wood-Burning Sauna Stove
  
• Firebox Style: LS Firebox Extension (Exterior Loading)
  
• Sauna Room Capacity: 282–635 Cubic Feet
  
• Stone Capacity: Up to 330 lbs (150 kg)
  
• Stone Size Requirement: 2"–4" Rounded Sauna Stones
  
• Fuel Type: Firewood
  
• Maximum Firewood Length: 16" (40 cm)
  
• Heating Efficiency: Directs up to 75% of heat into the sauna
  
• Construction Material: Stainless Steel
  
• Top Plate Thickness: 5 mm
  
• Side Wall Thickness: 3 mm
  
• Flue Connection Options: Top or Rear Connection
  
• Flue Diameter: 4.49" (114 mm)
  
• Installation Type: Floor Standing
  
• Minimum Sauna Room Height: 75" (191 cm)
  
• Heater Weight: Approx. 172 lbs (78 kg)
  
• Dimensions: 29.9"W × 24.8"D × 34.8"H
  
• Door Style: Tempered Glass Fire Door
  
• Design Style: Scandinavian / Nordic Minimalist
  
• Country of Manufacture: Estonia
  
• Certifications: CE Certified, Ecodesign Compliant, BImSchV II
  
• Warranty: Limited Residential Manufacturer Warranty
  

Performance Features

• Exterior-loading firebox keeps the sauna cleaner and more comfortable
  
• Large stone mass creates soft, long-lasting steam and even radiant heat
  
• Advanced clean-burning technology reduces emissions and wood consumption
  
• Designed for premium indoor and outdoor sauna installations
  
• Compatible with through-wall and through-ceiling chimney systems

Resources- Click Links Below

Huum Warranty

Huum Hive Flow Manual

Huum Hive Flow Environmental Certificate

• Free Shipping: This order qualifies for free shipping within the contiguous United States.
• Processing Time: In-stock items typically leave the warehouse within 1–3 business days. This is the processing period before transit, not the final delivery time.
• Confirm Availability: Inventory can change quickly. Please call, text, or email NW Immersion before ordering if you need confirmation of current stock or have a specific delivery deadline.
• Multiple Packages: The heater, sauna stones, controls, and accessories may ship in separate boxes or on separate pallets. Packages may arrive on different days.
• Tracking: Tracking information will be emailed for each shipment as soon as it leaves the warehouse.
• Inspect Upon Arrival: Check every package for visible damage before accepting delivery. Photograph any damage and contact NW Immersion promptly so we can assist.

Questions about availability, delivery, heater sizing, controls, or installation requirements? Our U.S.-based sauna specialists are available by phone, text, or email.

The HUUM HIVE Flow Wood-Burning Sauna Stove is backed by HUUM’s limited manufacturer warranty, protecting against defects in materials and craftsmanship under normal residential use. Designed and engineered in Estonia, HUUM products are built to meet rigorous European quality and performance standards for long-lasting sauna reliability.

To maintain warranty coverage, the sauna stove must be installed, operated, and maintained according to the official HUUM installation and operating instructions.

• 
  5-Year Limited Residential Warranty
  
• 
  Covers manufacturing defects in materials and workmanship
  
• 
  Built to meet strict European quality and environmental standards
  
• 
  Warranty applies only to properly installed and correctly operated sauna heaters
  
• 
  Normal wear, misuse, improper installation, modifications, and transportation damage are not covered
  
• 
  Proof of purchase is required for all warranty claims
  

For the best long-term performance, HUUM recommends professional installation and proper sauna ventilation and chimney configuration.