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HUUM

CORE BK/ST | Sauna Heater With UKU Controller + Stones | By Huum

CORE BK/ST | Sauna Heater With UKU Controller + Stones | By Huum

$3,399.97 USD
$3,399.97 USD
Sale Sold out
Shipping calculated at checkout.
Power Rating (KW)

HUUM CORE BK/ST · "Naked" Custom-Finish Sauna Heater · Tile · Stone · Glass · Wood · 6.5–10.5 kW · Bench-Embed · 3-Year Warranty · Made In Estonia

"Naked" Exterior — Your Finish Ceramic Tile · Stone · Glass · Wood Industrial Stainless Steel Core 6.5 kW · 9 kW · 10.5 kW Options 177–566 cu ft Room Range 66 lbs Stone Capacity Minimal Safety Distances Bench-Embed Capable 240V / 1PH 🎛️ UKU Controls Compatible 🛡️ 3-Year Residential · 1-Year Commercial 🇪🇪 Designed & Made In Estonia

The HUUM CORE BK/ST is the customisation variant of the HUUM CORE — the same industrial-quality Estonian electric heater, but with a "naked" exterior that ships as a blank canvas for you to finish with ceramic tiles, stone, glass, or wood. Same 66 lbs stone capacity, same 6.5 / 9 / 10.5 kW range for rooms from 177 to 566 cubic feet, same compact footprint with minimal safety distances and bench-embed capability. CORE performance — your exterior expression.

The same CORE inside. Your finish outside. Tile it, stone it, glass it, wood it — the BK/ST disappears into any sauna you can imagine. 🌿

🎨
"Naked" Exterior — The BK/ST's Defining Feature
The CORE BK/ST ships without an exterior finish — intentionally. The structural frame is designed as a blank canvas compatible with ceramic tiles, stone, glass, or wood applied by the installer. For a custom-built sauna where every surface has been specified, the BK/ST allows the heater to match that specification rather than interrupt it.
🎨
Exterior
Custom Finish
🪨
Stone Capacity
66 lbs
📐
Room Range
177–566 cu ft
🛡️
Warranty
3 Yr Res · 1 Yr Com

Finish Options — Your Canvas

🟫
Ceramic Tile
🪨
Stone
🔲
Glass
🌲
Wood

HUUM CORE Range — Choose Your Variant

Also Available
CORE Alder
Same CORE with pre-fitted Alder wood panels — ready to install, no exterior work required
✅ This Model
CORE BK/ST
Naked exterior — finish with tile, stone, glass, or wood to match your custom sauna interior
Custom Finish

Three Power Options — 177 to 566 cu ft

🔵
Entry
6.5 kW
Compact rooms · Efficient output for smaller sauna spaces
🟡
Mid-Range
9 kW
Most versatile · Wide mid-range room coverage
🔴
Maximum
10.5 kW
Largest rooms · Maximum CORE output up to 566 cu ft
🎨 "Naked" exterior — tile, stone, glass, or wood — ships as a blank canvas for custom finishing. For a custom-built sauna where every surface has been specified, the BK/ST allows the heater to match that specification rather than interrupt it.
🏗️ Industrial-quality stainless steel — direct stone contact — beneath any finish, the CORE BK/ST is built from industrial-quality stainless steel with direct stone-to-element contact. Faster stone heating, longer heat retention, consistent intense heat and powerful steam throughout every session.
📦 Compact 12.2" × 12.2" × 32.7" — minimal safety distances — bench-embed capable — installs in tight corners, against walls, or directly embedded into bench seating. With a custom tile or stone finish applied, the heater becomes part of the bench architecture — completely integrated.
🪨 66 lbs stone capacity — powerful steam — ladle water onto 66 lbs of heated stones for thick, sustained steam throughout the session. Authentic Nordic sauna experience without heat drop-off.
🎛️ UKU controls required — sold separately — the CORE BK/ST requires the HUUM UKU Control system (sold separately). Contact us to add UKU controls to your order.
🇪🇪 Designed and made in Estonia — 3-year residential / 1-year commercial warranty — dual warranty coverage reflecting HUUM's confidence in the CORE for both home and professional wellness installations.
Brand / Model HUUM — CORE BK/ST
Manufacturing Designed & made in Estonia
Exterior "Naked" — custom finish: tile, stone, glass, or wood
Core Construction Industrial-quality stainless steel
Power Options 6.5 kW · 9 kW · 10.5 kW
Voltage 240V / 1PH
Room Capacity 177–566 cubic feet
Stone Capacity 66 lbs — direct element contact
Dimensions 12.2" W × 12.2" D × 32.7" H
Safety Distances Minimal — bench-embed compatible
Controls UKU required — sold separately
Warranty 3-year residential · 1-year commercial (elements excluded)
🛡️ 3-Year Residential / 1-Year Commercial Warranty
Elements excluded from coverage. View full warranty terms in the Warranty PDF in the Manuals tab. Contact us for warranty queries.
HUUM CORE — User Manual View PDF
HUUM CORE — Sauna Sizing Guide View PDF
HUUM CORE — Warranty Document View PDF
HUUM CORE — Stone Requirements View PDF
HUUM CORE — Element Requirements View PDF

🚚 Packed and shipped within 1–3 business days. Delivered within 5–10 business days. Shipping costs calculated at checkout.

Use the Sauna Sizing Guide in the Manuals tab to select the right kW. UKU controls required and sold separately — contact us to add them to your order. The naked frame ships ready for your chosen finish to be applied by your installer.

🎨 Custom Finish — Tile · Stone · Glass · Wood · 🪨 66 lbs Stones · ⚡ 6.5–10.5 kW · 📦 Bench-Embed · 🛡️ 3-Yr Residential · 🇪🇪 Made In Estonia

HUUM CORE BK/ST — The Same CORE. Your Finish. 🔥

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