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Huum

Huum Core BK/ST Customizable Electric Sauna Heater, Unfinished Exterior, UKU Local and Stones, 6.5 to 10.5kW

Huum Core BK/ST Customizable Electric Sauna Heater, Unfinished Exterior, UKU Local and Stones, 6.5 to 10.5kW

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.

Regular price $3,167.00 USD
Regular price Sale price $3,167.00 USD
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Shipping calculated at checkout.
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Inlay Finishes
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Pay over time with Shop Pay Installments at checkout, subject to approval. How financing works · Using HSA/FSA funds

Questions before you buy?Fit, power, delivery or which model. We help before and after your order. Contact us
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Questions on fit, power or delivery? Call or email us. We stay your first contact after delivery, warranty included.

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30-day returns

Request a return within 30 days of delivery. Approved change-of-mind returns carry a 25% restocking fee. Damage is made right. Return policy

Pay over time

Split the cost into monthly payments with Shop Pay Installments, subject to approval. Financing · HSA/FSA

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
ModelHuum CORE BK (black trim): H1013012, H1013022, H1013032; CORE ST (stainless trim): H1013042, H1013052, H1013062
ExteriorUnfinished 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
Electrical240V single phase; 6.5kW: 25A, 30A breaker, 10 AWG; 9kW: 37.5A, 50A breaker, 8 AWG; 10.5kW: 43.75A, 50A breaker, 8 AWG
StonesHolds about 66 lb (30 kg) of 2 to 4 in stones
Heater size and weight15.16 x 15.16 x 32.7 in (W x D x H), 41.9 lb, per Huum's CORE manual
Clearances2 in to the sides, 43.3 in above the heater, 1 in air gap underneath
Minimum room height80 in
ControlHuum UKU Local digital control, included in this package
CertificationSGS listed, per Huum
Made inEstonia

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.

Full shipping policy

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.

How warranty support works · Returns policy

What delivery looks like

A cardboard parcel box delivered on a front porch
Arrives by parcel carrier, usually left at your door with tracking emailed when it ships. Example photo of a typical delivery. Your packaging may look different.

See it in detail

HUUM CORE stone placement

Learn more from Huum

HUUM UKU 4.2 installation US

Manuals and documents

Official Huum documents for this model. Opens as a PDF.

Huum Core BK electric sauna heater with black top trim and unfinished exterior, angled view with stones

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.
Huum UKU Local digital sauna control panel, black, included in Huum Core packages

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.

Common questions

Which output do I need?
Huum rates the 6.5kW for 177 to 318 cu ft, the 9kW for 283 to 460 cu ft and the 10.5kW for 354 to 566 cu ft. Add 3.3 cu ft for each sq ft of glass, tile or stone wall.
What power does it need?
240V single phase: 25A on a 30A breaker for 6.5kW, 37.5A on a 50A breaker for 9kW, and 43.75A on a 50A breaker for 10.5kW. A licensed electrician must install it.
What comes in the package?
The CORE heater, the Huum UKU Local digital control and sauna stones. Huum specifies about 66 lb of 2 to 4 in stones for the CORE.
What can I clad it with?
Huum lists ceramic tile, stone, glass or wood. Each finished side panel should weigh no more than 44.1 lb, and the material must suit sauna temperatures.
Who should not use a sauna?
If you are pregnant, have a heart condition, low blood pressure or another health concern, talk with your doctor first. Children should be supervised.

Choosing the right setup can be tricky. We are here to help.

Tell us your space, power and how you plan to use it, and we will help you compare models honestly, including whether this one is the right fit.

Why buy from Restore Suite

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Honest guidance

Free guides and calculators for sizing, running costs and safety, so you can decide with real numbers. See the research