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Description
The Huum CORE BK/ST is the customizable version of the CORE electric sauna heater: it ships with unfinished metal shields so you or your builder can clad it in ceramic tile, stone, glass or wood to match the room. Choose a black (BK) or stainless steel (ST) top trim. It suits custom home saunas of 177 to 566 cubic feet, and this package includes the Huum UKU Local control and stones.
Built to be finished
Huum supplies 4 unfinished metal shields, 4 cover strips and fastening screws, plus finishing instructions in the manual. Huum states each finished side panel should weigh no more than 44.1 lb and the material must suit sauna heat.
Compact and bench friendly
The small footprint and short safety distances allow corner placement or full embedding in a sauna bench, with the stones in direct contact with the stainless steel elements.
Specifications (Huum)
- Model: Huum CORE BK (black trim): H1013012, H1013022, H1013032; CORE ST (stainless trim): H1013042, H1013052, H1013062
- Exterior: Unfinished metal shields, to be clad by the buyer
- Output and room size (240V): 6.5kW: 177 to 318 cu ft; 9kW: 283 to 460 cu ft; 10.5kW: 354 to 566 cu ft
- Electrical: 240V single phase; 6.5kW: 25A, 30A breaker, 10 AWG; 9kW: 37.5A, 50A breaker, 8 AWG; 10.5kW: 43.75A, 50A breaker, 8 AWG
- Stones: Holds about 66 lb (30 kg) of 2 to 4 in stones
- Heater size and weight: 15.16 x 15.16 x 32.7 in (W x D x H), 41.9 lb, per Huum's CORE manual
- Clearances: 2 in to the sides, 43.3 in above the heater, 1 in air gap underneath
- Minimum room height: 80 in
- Control: Huum UKU Local digital control, included in this package
- Certification: SGS listed, per Huum
- Made in: Estonia
What you need to know before buying
- This is a hardwired 240V heater. A licensed electrician must install it and the UKU control per the manual and local code.
- Pick the output by room volume. Add 3.3 cu ft for each sq ft of uninsulated glass, tile, brick or stone wall.
- The CORE needs the UKU control and stones to run; both are part of this package.
- The CORE is fixed to the floor with the included brackets and needs at least an 80 in ceiling.
- The exterior is not finished. Budget for cladding material and labor, and follow Huum's finishing instructions and the 44.1 lb per side panel limit.
In the box
Huum CORE BK/ST heater with 4 adjustable legs, 4 unfinished metal shields, 4 cover strips and screws, installation and operation manual, Huum UKU Local digital control, and sauna stones.
Compare
Want it finished out of the box? See the Huum Core Black, Huum Core Alder, Huum Core Aspen or Huum Core Thermo-Aspen.
Warranty
30-day limited warranty against manufacturing defects.
Returns
Returns are accepted within 30 days of delivery for unused, unopened items in the original packaging, with our written approval first. A 25% restocking fee applies, you pay return shipping, and original shipping is non-refundable. Note any shipping damage on the delivery receipt and send us photos right away.
Why buy from Restore Suite
Financing is available at checkout. Questions before you buy? Talk to a real person.
Related
Browse all sauna heaters and electric sauna heaters, check your circuit with the sauna breaker size calculator, or read our sauna installation guide.
Sauna use is intended for general relaxation and wellness, not to treat any condition. If you are pregnant, have a heart condition, low blood pressure or another health concern, talk with your doctor before use. Follow the manufacturer's installation clearances and electrical requirements.
Specifications
| Model | Huum CORE BK (black trim): H1013012, H1013022, H1013032; CORE ST (stainless trim): H1013042, H1013052, H1013062 |
|---|---|
| Exterior | Unfinished metal shields, to be clad by the buyer |
| Output and room size (240V) | 6.5kW: 177 to 318 cu ft; 9kW: 283 to 460 cu ft; 10.5kW: 354 to 566 cu ft |
| Electrical | 240V single phase; 6.5kW: 25A, 30A breaker, 10 AWG; 9kW: 37.5A, 50A breaker, 8 AWG; 10.5kW: 43.75A, 50A breaker, 8 AWG |
| Stones | Holds about 66 lb (30 kg) of 2 to 4 in stones |
| Heater size and weight | 15.16 x 15.16 x 32.7 in (W x D x H), 41.9 lb, per Huum's CORE manual |
| Clearances | 2 in to the sides, 43.3 in above the heater, 1 in air gap underneath |
| Minimum room height | 80 in |
| Control | Huum UKU Local digital control, included in this package |
| Certification | SGS listed, per Huum |
| 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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Learn more from Huum
Manuals and documents
Official Huum documents for this model. Opens as a PDF.

Why this heater
An unfinished CORE electric sauna heater you clad in tile, stone, glass or wood, with a black or stainless trim, 6.5 to 10.5kW.
- Unfinished exterior to clad in your own material.
- Black (BK) or stainless steel (ST) top trim.
- 6.5, 9 or 10.5kW for rooms of 177 to 566 cu ft.
- Includes Huum UKU Local control and stones.

Key specs at a glance
The numbers to check before you order. Full details are on the Specifications tab.
- Exterior
- Unfinished metal shields, to be clad by the buyer
- Output and room size (240V)
- 6.5kW: 177 to 318 cu ft; 9kW: 283 to 460 cu ft; 10.5kW: 354 to 566 cu ft
- Electrical
- 240V single phase; 6.5kW: 25A, 30A breaker, 10 AWG; 9kW: 37.5A, 50A breaker, 8 AWG; 10.5kW: 43.75A, 50A breaker, 8 AWG
- Heater size and weight
- 15.16 x 15.16 x 32.7 in (W x D x H), 41.9 lb, per Huum's CORE manual
Before you buy: what to know
Based on the manufacturer's specs, manuals and our research.
- Wire the heater and test it before cladding, because a finished CORE is heavy and hard to turn, as Huum notes in the manual.
- Cladding is not included; tile, stone or wood must be rated for sauna heat.
- Electric sauna heaters must be installed by a licensed electrician per the manual and local code.
Not sure this is the right fit? Ask us or call (945) 280-3243.
Compare Huum models
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|---|---|---|---|---|
| Exterior | – | – | – | – |
| Electrical | – | – | – | – |
Huum Drop Wall Mount Sauna Heater with UKU Controller & StonesFrom $2,716.00
- Stone capacity
- 122 lb
Huum Hive Flow Mini 8.5kW Wood-Burning Sauna Stove with Ash Drawer & Sauna Stones$3,339.00
Common questions
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