HUUM

HIVE FLOW | 9.5 kW Wood-Burning Sauna Stove | BY Huum

$4,199.97 USD

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Power (KW) 9.8 (UP TO 635 CF)

HUUM | HIVE Flow LS | 9.5 kW Wood-Burning Sauna Stove | 75% Heat Retention · Extended External Firebox · 330 lbs Stone Capacity · BImSchV Certified · Patent-Pending · 5-Year Warranty | H1015012

HUUM HIVE Flow LS — 9.5 kW | Wood-Burning · External Firebox Loading · 75% Heat Retention · 330 lbs Stone Capacity · BImSchV · 5-Year Warranty 🔥

🪵 Wood-Burning 9.5 kW 282–635 cu ft ♻️ 75% Firewood Heat Retention 🚪 External Firebox — Load From Adjacent Room 🪨 Up To 330 lbs Stone Capacity ✅ BImSchV Certified 🔬 Patent-Pending Construction 🛡️ 5-Year Limited Warranty 🇪🇪 Made In Estonia — HUUM 🚚 Delivered Within 10 Business Days

The HUUM HIVE Flow LS is a 9.5 kW wood-burning sauna stove built around two defining features that set it apart from every other wood-burning stove in the category. First: 75% heat retention — the extended firebox and patent-pending construction capture and hold 75% of the firewood's heat energy within the stone mass rather than losing it through the flue. Second: external firebox loading — the extended firebox allows wood to be loaded from an adjacent room, keeping sawdust, bark, and debris entirely out of the sauna space and the sauna environment clean throughout every session.

Designed for rooms from 282 to 635 cubic feet with a stone capacity of up to 330 lbs — the largest stone load in the HUUM wood-burning range — the HIVE Flow LS produces deep, consistent, long-lasting heat and abundant steam from every session. BImSchV certified for emissions compliance. Backed by a 5-year limited warranty. Designed, engineered, and manufactured in Estonia by HUUM.

75% heat retention. 330 lbs of stone. Load from outside. The HUUM HIVE Flow LS — every engineering decision made for a better session. 🌿

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75% Heat Retention — Extended Firebox + Patent-Pending Construction

The HIVE Flow LS retains 75% of each load of firewood's heat energy within the stove and stone mass. The extended firebox maximises combustion time and the patent-pending heat circulation construction captures heat that a conventional stove loses through the flue. The practical result is more heat per log, a more stable sauna temperature throughout the session, and significantly better fuel efficiency — fewer loads of wood required for the same session quality.

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Extended External Firebox — Load From An Adjacent Room

The HIVE Flow LS's extended firebox is the feature that fundamentally changes the sauna experience. The firebox loading point extends through the sauna wall, allowing wood to be loaded from an adjacent room — a changing room, storage area, or anteroom — without opening the sauna door or bringing wood, bark, and debris into the sauna space. The sauna interior stays clean. The session is uninterrupted. The atmosphere of a properly sealed sauna room is maintained throughout.

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Output

9.5 kW

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Room Range

282–635 cu ft

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Stone Capacity

Up To 330 lbs

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Warranty

5 Years

This product is listed for USA customers. However, we regularly deliver to customers in New Zealand, Australia, Europe, and beyond — shipping is assessed case by case.

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♻️75% heat retention — extended firebox + patent-pending construction — the HIVE Flow LS retains 75% of each firewood load's heat energy within the stove and stone mass. The extended firebox maximises combustion time. The patent-pending internal heat circulation design captures heat that a conventional stove loses through the flue. More heat per log, longer stable sessions, better fuel efficiency — fewer wood loads for the same quality of sauna

🚪External firebox loading — from adjacent room, sauna stays clean — the HIVE Flow LS's extended firebox passes through the sauna wall, allowing wood to be loaded from an adjacent room without entering the sauna or bringing bark, sawdust, or debris into the sauna space. The interior stays clean, the session is uninterrupted, and the sealed atmosphere of the sauna room is maintained throughout

🪨Up to 330 lbs stone capacity — the largest in the HUUM wood range — 330 lbs of sauna stones is the highest stone capacity in the HUUM wood-burning range. The increased stone mass retains more heat energy, produces more consistent steam across extended sessions, and sustains repeated löyly pours that a smaller stone load cannot. Combined with the 75% heat retention system, the result is longer, more stable sessions with more steam per ladle

📐9.5 kW — 282 to 635 cubic feet — the HIVE Flow LS covers a wide room range from 282 to 635 cubic feet — suited to mid-sized and larger home sauna installations and commercial sauna rooms. The 9.5 kW output with the 75% heat retention system heats this range quickly and holds temperature consistently throughout extended sessions

✅BImSchV certified — emissions compliance — BImSchV certification confirms the HIVE Flow LS meets Germany's Federal Immission Control Act requirements for wood-burning emissions — one of the most demanding environmental standards applied to wood stoves globally. The efficiency engineering that drives the 75% heat retention also drives the low emissions output

🔬Patent-pending construction — enhanced heat circulation — the patent-pending internal design enhances heat circulation within the firebox and through the stone mass, producing soft, consistent, luxurious heat throughout the sauna room. Smooth, stable temperature without the spikes and drops of less sophisticated wood-burning stove designs

🛡️5-year limited warranty — made in Estonia by HUUM — the HIVE Flow LS carries HUUM's 5-year limited warranty (excluding elements) and is designed, engineered, and manufactured in Estonia — the same production standards and craftsmanship applied across every HUUM product in the range

Brand / Model	HUUM — HIVE Flow LS
Part Number	H1015012
Manufacturing	Designed, engineered & made in Estonia by HUUM
Fuel type	Wood-burning
Output	9.5 kW
Room capacity	282–635 cubic feet
Stone capacity	Up to 330 lbs (sold separately)
Heat retention	75% of firewood heat energy
Firebox	Extended — external loading from adjacent room
Construction	Patent-pending heat circulation design
Certification	BImSchV — German Federal Emissions Standard
Warranty	5-year limited (excluding elements)

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5-Year Limited Warranty. The HUUM HIVE Flow LS is backed by a 5-year limited warranty, excluding elements. Contact us for full warranty terms and conditions.

HUUM HIVE Flow LS — User Manual View PDF

🚚 Delivery is estimated within 10 business days for available delivery zones. Shipping timeframes and costs vary by product and are determined by size, weight, and freight requirements.

For international destinations outside standard delivery zones, shipping is assessed case by case. FR33DOM Wellness is committed to ensuring every order arrives as efficiently as possible.

🎬 HUUM HIVE Flow LS — In Action