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Description
The Huum Hive Flow Mini LS is an 8.5kW wood-burning sauna stove with a firebox extension, sized for smaller rooms where a full-size stove would put out too much heat. The extension lets you load wood from the adjoining room, keeping the sauna clear of wood and ash.
Heat
The furnace uses the same patent-pending construction as the larger Hive Flow models, moving heat through the stone mass for even output. It holds 231 lb of stones despite its compact size.
Specifications
- Output: 8.5kW
- Room size: up to 494 cu ft
- Stone capacity: 231 lb
- Loading: firebox extension, from the adjoining room
- Warranty: 30-day limited warranty against manufacturing defects
- Made in Estonia
Yes. Sauna stones are included with this package.
Compare Huum wood stoves
See the comparison table on this page, or the Hive Flow LS for rooms up to 635 cu ft. Browse all sauna heaters.
Specifications
| Output | 8.5kW |
|---|---|
| Room size | up to 494 cu ft |
| Stone capacity | 231 lb |
| Loading | firebox extension, from the adjoining room |
| Warranty | 30-day limited warranty against manufacturing defects |
| Details | Made in Estonia |
Specifications from the manufacturer. Dimensions are approximate.
Shipping
We ship to the 48 contiguous U.S. states and Washington, DC. Your shipping cost is calculated at checkout and shown before you pay.
You will get an order confirmation right away and tracking by email when your order ships. Questions about timing for a specific item? Call (945) 280-3243 or email support@restoresuite.com before you order.
Delivery
Large items such as saunas, hot tubs and cold plunge tubs usually ship by freight. The carrier contacts you to schedule delivery. Please check the packaging and note any damage on the delivery receipt before you sign, then tell us within 48 hours so we can resolve it for you.
Before delivery day, measure doorways and hallways along the path to the install spot, and confirm the electrical requirement on the Specifications tab.
Warranty
30-day limited warranty against manufacturing defects
If this item has a manufacturing defect within 30 days of purchase, contact us with your order number and a photo or video of the issue and we will make it right.
Reviews
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Manuals and documents
Official Huum documents for this model. Opens as a PDF.

Why this heater
A compact 8.5kW Estonian wood sauna stove with a firebox extension, so you load wood from the next room. Holds 231 lb of stones.
- Sized for smaller rooms, up to 494 cu ft.
- Firebox extension lets you load wood from the adjoining room.
- 231 lb stone capacity in a compact footprint.
- Made in Estonia, 30-day limited warranty against manufacturing defects.

Key specs at a glance
The numbers to check before you order. Full details are on the Specifications tab.
- Room size
- up to 494 cu ft
- Stone capacity
- 231 lb
Before you buy: what to know
Based on the manufacturer's specs, manuals and our research.
- The Hive Flow Mini LS is 8.5kW for rooms up to 494 cu ft, sized for smaller saunas where a full-size stove would put out too much heat.
- The firebox extension runs through the wall so you load wood from the adjoining room. Plan that wall opening with the next room in mind.
- It holds 231 lb of stones despite its compact size. If you want to load from inside the sauna instead, the Hive Flow Mini adds an ash drawer.
- Clearances and the chimney run come from the Huum installation and user manual. Check local code and your insurer before you build around a wood stove.
Not sure this is the right fit? Ask us or call (945) 280-3243.
Compare Huum models
Swipe to compare 4 models
| Model |
Huum Drop Wall Mount Sauna Heater with UKU Controller & Stones
From $2,716.00 |
Huum Hive Flow Mini 8.5kW Wood-Burning Sauna Stove with Ash Drawer & Sauna Stones
$3,339.00 |
Huum Hive Flow Mini LS 8.5kW Wood-Burning Sauna Stove with Firebox Extension & Sauna Stones
$3,463.00You are viewing |
Huum Hive Flow LS 9.8kW Wood-Burning Sauna Stove with Firebox Extension & Sauna Stones
$3,955.00 |
|---|---|---|---|---|
| Stone capacity | 122 lb | – | 231 lb | 330 lb |
Huum Hive Flow Mini LS 8.5kW Wood-Burning Sauna Stove with Firebox Extension & Sauna Stones$3,463.00You are viewing
- Stone capacity
- 231 lb
Huum Drop Wall Mount Sauna Heater with UKU Controller & StonesFrom $2,716.00
- Stone capacity
- 122 lb
Common questions
What room size is it for?
What does the firebox extension do?
Are stones included?
Where is it made?
Choosing the right setup can be tricky. We are here to help.
Tell us your space, power and how you plan to use it, and we will help you compare models honestly, including whether this one is the right fit.
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Honest guidance
Free guides and calculators for sizing, running costs and safety, so you can decide with real numbers. See the research


