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HUUM heaters, controls, and accessories ship using the appropriate delivery method. Receive tracking information once available, with assistance throughout the delivery process.
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HUUM Hive Flow Wood-Burning Heater w/ Firebox Extension
$3,221.00
Was
$3,789.41
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- ✔︎ Made in Estonia — Ships in 1–2 weeks
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HUUM Hive Flow Wood-Burning Heater w/ Firebox Extension
Sale price$3,221.00
Regular price$3,789.41
Overview
Enjoy authentic wood-fired heat with the convenience of exterior loading. The HUUM Hive Flow with Firebox Extension lets you load logs from an adjacent room while the sauna stays clean and serene. Handcrafted in Estonia from marine-grade stainless steel, its tall cylinder surrounds a deep stone bed for soft, even steam in rooms up to 635 cu ft.
Features
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Exterior-loading firebox keeps the sauna clean and safe
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Heats sauna rooms up to 635 cu ft (18 m³)
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330 lb (150 kg) stone capacity for deep, steady warmth
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Open cylindrical stainless body promotes natural airflow
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Traditional wood heat — no electricity required
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Durable stainless firebox and door assembly
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Handcrafted in Estonia • CE-certified
Specifications
| Category | Details |
|---|---|
| Delivery & Capacity | Curbside delivery via freight carrier • Heats up to 635 cu ft (18 m³) |
| Heating System | Wood-burning firebox with exterior loading (no electrical connection) |
| Construction & Materials | Marine-grade stainless steel body • Extended firebox for through-wall loading • Open stone chamber (330 lb capacity) |
| Chimney Connection | 4.5″ (115 mm) flue outlet |
| Dimensions & Weight | 20.7″ W × 29.5″ D × 34.8″ H • Weight: 161 lb (73 kg) |
| Certifications | CE-certified |
| Origin | Made in Estonia |
What's Included
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HUUM Hive Flow wood-burning heater with Firebox Extension
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Ash pan and flue collar
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Installation & operation manual
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Manufacturer warranty
(Sauna stones and chimney components sold separately.)
Installation
Install on a non-combustible base and maintain clearances per the HUUM manual. The exterior firebox opening must meet local code with proper wall protection. Connect to a certified chimney system sized for wood sauna stoves. All venting and combustion-air work should be performed by a qualified professional. Use HUUM sauna stones for best heat retention and steam quality.
Operation and Usage
Operate the sauna only as directed in its model-specific manual. Keep combustible items clear of hot surfaces, supervise children, and stop use if the unit is damaged or you feel unwell. Sauna bathing involves heat exposure and dehydration risk; ask a healthcare professional if a condition or medication may affect heat tolerance.
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WHY CHOOSE HUUM AT SAUNA LUXURIES?
Discover HUUM's premium sauna heaters and smart controls, backed by personalized product guidance, reliable order communication, and dedicated customer support.
ESTONIAN CRAFTSMANSHIP
Made in Estonia, HUUM heaters combine award-winning Nordic design with generous stone capacity for a gentle, long-lasting steam experience.
EXPERT HEATER GUIDANCE
Get personalized assistance with HUUM heater sizing, UKU controller compatibility, and installation requirements to ensure you choose the right setup.
WHY CHOOSE SAUNA LUXURIES?
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