HUUM HIVE Flow LS 9.8kW Wood-Burning Sauna Heater Package
A 9.8 kW wood-burning sauna heater package with a through-wall firebox extension, 330 lb stone capacity and chimney components, designed for efficient combustion and mild, long-lasting löyly.
High-efficiency wood-fired heat with through-wall loading
The HUUM HIVE Flow LS combines a high-capacity stone basket with an extended firebox designed for through-wall installation. This allows firewood to be loaded from outside the sauna room while the stone-filled heater remains inside.
Rated at 9.8 kW, it is designed for sauna rooms from 282 to 635 cu. ft. HUUM states that the HIVE Flow design retains 75% of the heat from burning firewood. Its 330 lb stone capacity provides substantial thermal mass for mild, long-lasting löyly.
HUUM HIVE Flow LS dimensions, capacity and package details
| Specification | HUUM HIVE Flow LS |
|---|---|
| Model | HIVE Flow LS |
| Heater type | Wood-burning sauna stove |
| Output | 9.8 kW |
| Sauna room capacity | 282–635 cu. ft. |
| Stone capacity | 330 lb |
| Fuel | Wood |
| Maximum firewood length | 16 in. (400 mm) |
| Minimum room height | 75 in. (1905 mm) |
| Flue connection | Top or back |
| Firebox | Extended / through-wall loading |
| Width | 20.7 in. (526 mm) |
| Depth | 29.5 in. (750 mm) |
| Height | 34.8 in. (884 mm) |
| Heater weight | 161 lb |
| Shipping weight with stones | 491 lb |
| Country of manufacture | Estonia |
| Warranty | 3-year limited warranty |
HIVE Flow LS 9.8 kW wood-burning sauna heater · 330 lb of 2–4 in. rounded olivine sauna stones · HUUM protective bed · chimney kit selected for the installation configuration.
Chimney components vary according to the selected package option, including through-wall, angled-ceiling, flat or curved-ceiling and backside-connection configurations.Safety distance front to back: 55.5 in. (1410 mm) · Safety distance left to right: 33 in. (826 mm) · Minimum room height: 75 in. (1905 mm).
Always confirm the final installation against the current HUUM documentation and applicable local building, fire-safety and chimney requirements.
