HUUM HIVE Flow LS Wood-Burning Sauna Stove w/ Firebox Extension, 9.8kW
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The HUUM HIVE Flow LS is a premium wood-burning sauna stove with a firebox extension, designed so you can load wood from an adjacent room while the stove body delivers heat and steam inside the sauna. Built for larger sauna rooms, the Flow LS pairs a high-efficiency firebox with a large stone capacity for long, мягкий (mild) steam and excellent heat retention.
Why it’s worth it
- Load from outside the sauna: the LS firebox extension lets you feed the fire from a changing room or wood room for a cleaner sauna experience.
- High efficiency heat transfer: designed to direct the majority of heat into the sauna rather than up the chimney (excellent wood economy).
- Big stone mass = better steam: large rock capacity supports rich löyly and holds heat long after the fire settles.
- Top or rear flue connection for flexible installation layouts.
Specifications
| Model | HIVE Flow LS |
|---|---|
| Power Output | 9.8 kW |
| Fuel Type | Wood |
| Recommended Sauna Room Size | 282–635 ft³ |
| Minimum Room Height | 75" (191 cm) |
| Maximum Firewood Length | 16" (40 cm) |
| Flue Connection Location | Top and Back |
| Heater Weight | 161 lb (73 kg) |
| Shipping Weight (with stones) | 491 lb (223 kg) |
| Width | 20.7" (53 cm) |
| Depth | 29.5" (75 cm) |
What’s Included
- HUUM HIVE Flow LS wood-burning sauna stove
- Metal grate
- Ash drawer & ash grate
- Cleaning hatches (2 pcs)
- Metal fixing plates (2 pcs)
- Heat-resistant glove
- Installation & operation manual
Required for Operation
- Sauna stones: required for safe operation and proper steam performance. (Flow LS typically requires 10 boxes.)
- Chimney system: compatible 6" (150 mm) double-wall chimney/flue components as required by your installation plan and local code.
- Floor/wall protection: depending on your build, you may need protective bedding / floor plate / wall pass-through components for safe clearances.
- Installation: must be installed per manufacturer manual and local building/fire codes. Professional installation is strongly recommended.
Clearances & Safety
Safety distances vary by installation method and flue configuration. Refer to the Installation & Operation Manual for the correct clearances front-to-back and left-to-right before finalizing placement.