Huum Core Electric Sauna Heater With A Thermo-Aspen Wooden Exterior And Its Sauna Stone Bed.
Huum Core Electric Sauna Heater With Alder Wood Exterior And Stainless Inlay
Huum Core Electric Sauna Heater With Aspen Wood Exterior And Stainless Inlay
Huum Core Electric Sauna Heater With Thermo-Aspen Exterior And Stainless Inlay
Huum Core Electric Sauna Heater With Thermo-Aspen Exterior And Black Inlay
Close-Up Of The Sauna Stones Set Into The Wooden Surround Of The Huum Core Electric Heater.
Huum Core Electric Sauna Heater With A Wooden Exterior Installed Beside A Sauna Bench.
Huum Core Electric Sauna Heater In A Glass-Walled Sauna Looking Out To A Garden.
Water Being Poured Onto The Sauna Stones Of A Huum Core Heater, Raising Steam.
Detail Of The Slatted Wooden Exterior And Stone Bed Of The Huum Core Electric Sauna Heater.
Huum Core Electric Sauna Heater In The Black Finish Standing In A Light Wood Sauna.
Click to enlarge
Expert help that stays with you

Whether you’re choosing one component or planning the whole room, small details can become expensive problems once installation begins. We know the products we sell and the questions to ask early, helping catch mismatched components, overlooked requirements, and installation issues while they are still easy to fix.

Our job does not end when your order ships. We stay available through installation and beyond. If something needs attention, we stay involved, work the problem, and help see it through.

We want you to feel good about choosing Sauna Marketplace long after your first session, and confident recommending us to a friend. That standard guides the advice we give, the products we sell, and the way we take care of our customers.

Sauna and heater customers also receive free shipping on sauna accessories for life.

Planning a sauna, or need help with one you purchased from us? Our founders have assembled many of the saunas we sell, visited the manufacturers, and use these products every day. New customers and existing Sauna Marketplace sauna and heater owners can Book a Ben consultation.

Includes

What Is Included

6.5 KW, Stainless Steel

Included with purchase

Sauna heater, adjustable legs (4), unfinished metal shields (4), cover strips (4), wood panels (4), cover strip fastening screws, wood panel fastening screws, installation and operation manual.

Required separately

66 lb stones (quantity 2 × 33 lb 2 to 4 in stones boxes).

6.5 KW, Black

Included with purchase

Sauna heater, adjustable legs (4), unfinished metal shields (4), cover strips (4), wood panels (4), cover strip fastening screws, wood panel fastening screws, installation and operation manual.

Required separately

66 lb stones (quantity 2 × 33 lb 2 to 4 in stones boxes).

9 KW, Stainless Steel

Included with purchase

Sauna heater, adjustable legs (4), unfinished metal shields (4), cover strips (4), wood panels (4), cover strip fastening screws, wood panel fastening screws, installation and operation manual.

Required separately

66 lb stones (quantity 2 × 33 lb 2 to 4 in stones boxes).

9 KW, Black

Included with purchase

Sauna heater, adjustable legs (4), unfinished metal shields (4), cover strips (4), wood panels (4), cover strip fastening screws, wood panel fastening screws, installation and operation manual.

Required separately

66 lb stones (quantity 2 × 33 lb 2 to 4 in stones boxes).

10.5 KW, Stainless Steel

Included with purchase

Sauna heater, adjustable legs (4), unfinished metal shields (4), cover strips (4), wood panels (4), cover strip fastening screws, wood panel fastening screws, installation and operation manual.

Required separately

66 lb stones (quantity 2 × 33 lb 2 to 4 in stones boxes).

10.5 KW, Black

Included with purchase

Sauna heater, adjustable legs (4), unfinished metal shields (4), cover strips (4), wood panels (4), cover strip fastening screws, wood panel fastening screws, installation and operation manual.

Required separately

66 lb stones (quantity 2 × 33 lb 2 to 4 in stones boxes).

Contents vary by configuration. Check the row for the option selected above.

Technical Specifications

Technical Specifications

Model & Application

Model & Application
Brand

HUUM
Catalog Product

HUUM CORE Electric Sauna Heater with Alder Exterior | Black or Stainless Inlay, 6.5-10.5 kW
Heater Type

Electric sauna heater
Model Number

6.5 kW / 240 V / 1 phase: CORE ST ALDER 6; 6.5 kW / 240 V / 1 phase: CORE BK ALDER 6; 9 kW / 240 V / 1 phase: CORE ST ALDER 9; 9 kW / 240 V / 1 phase: CORE BK ALDER 9; 10.5 kW / 240 V / 1 phase: CORE ST ALDER 11; 10.5 kW / 240 V / 1 phase: CORE BK ALDER 11
SKU / Part Number

CORE ALDER

Sauna Sizing

Sauna Sizing
Maximum Room Volume

6.5 kW / 240 V / 1 phase: 318 ft³; 9 kW / 240 V / 1 phase: 460 ft³; 10.5 kW / 240 V / 1 phase: 566 ft³
Minimum Room Volume

6.5 kW / 240 V / 1 phase: 177 ft³; 9 kW / 240 V / 1 phase: 283 ft³; 10.5 kW / 240 V / 1 phase: 354 ft³

Electrical

Electrical
Minimum Circuit

6.5 kW / 240 V / 1 phase: 30 A; 9 kW / 240 V / 1 phase, 10.5 kW / 240 V / 1 phase: 50 A
Phase

1 phase
Rated Current

25 A
Rated Power

6.5 kW / 240 V / 1 phase: 6.5 kW; 9 kW / 240 V / 1 phase: 9 kW; 10.5 kW / 240 V / 1 phase: 10.5 kW
Supply Voltage

240 V
Wire Size

10 AWG

Dimensions & Weight

Dimensions & Weight
Assembled Dimensions

12.2"W x 12.2"D x 32.7"H
Heater Depth

15.16 in
Heater Height

32.68 in
Heater Weight

41.9 lb
Heater Width

15.16 in
Minimum Host-Room Height

75.98 in
Product Weight

41.9 lbs

Installation Clearances

Installation Clearances
Ceiling-Clearance Reference Height Above Finished Floor

32.68 in
Ceiling-Clearance Reference Plane

Top Of Rocks
Clearance to Floor

0.98 in
Combustible Perimeter Clearance

1.97 in
Minimum Spacing from Adjacent Surfaces

1.97 in
Top of Rocks Above Finished Floor

32.68 in

Included & Required

Included & Required
Included Components

Sauna Heater, Adjustable Legs (4), Unfinished Metal Shields (4), Cover Strips (4), Wood Panels (4), Cover Strip Fastening Screws, Wood Panel Fastening Screws, Installation and Operation Manual, 3-Year Limited Residential Warranty and 1-Year Limited Commercial Warranty (Excluding Elements)
Required, Not Included

66 lbs stones (Qty 2 x 33 lbs 2 to 4 in stones boxes)

Certifications

Certifications
Certifications & Listings

CE

Warranty

Warranty
Residential Warranty

3-Year Limited Residential Warranty and 1-Year Limited Commercial Warranty (Excluding Elements)

Use the attached current manual and a qualified installer for final sizing, wiring, clearances, venting, and local-code compliance.

How It Fits

How This Product Fits the System

What it is used for

A wood-burning sauna heater that heats the room and stone mass for traditional löyly. Treat the stove, chimney, floor protection, clearances, combustion air, ventilation, and stones as one installation system.

What to plan

  • Size from adjusted sauna volume, including the effect of glass, masonry, and other uninsulated surfaces; do not size from floor area alone.
  • Match the selected model's power or fuel, voltage, phase, circuit, wire, control, stone, and venting requirements before ordering.
  • Treat clearances, ceiling reference planes, ventilation, guarding, floor protection, and service access as one room-layout decision.
  • Follow the current installation manual and use a qualified installer.

Required separately

Complete the system with these items.

Designed to work with

Model-specific replacements and compatible system components.

Other heater options

Compare these options; sizing, power, controls, clearances, and stones may differ.

Attachments
Legacy manuals for older installations

Use these only when the document revision matches the installed product.

Gallery
Huum Core Electric Sauna Heater With A Thermo-Aspen Wooden Exterior And Its Sauna Stone Bed.
Huum Core Electric Sauna Heater With Alder Wood Exterior And Stainless Inlay
Huum Core Electric Sauna Heater With Aspen Wood Exterior And Stainless Inlay
Huum Core Electric Sauna Heater With Thermo-Aspen Exterior And Stainless Inlay
Huum Core Electric Sauna Heater With Thermo-Aspen Exterior And Black Inlay
Close-Up Of The Sauna Stones Set Into The Wooden Surround Of The Huum Core Electric Heater.
Huum Core Electric Sauna Heater With A Wooden Exterior Installed Beside A Sauna Bench.
Huum Core Electric Sauna Heater In A Glass-Walled Sauna Looking Out To A Garden.
Water Being Poured Onto The Sauna Stones Of A Huum Core Heater, Raising Steam.
Detail Of The Slatted Wooden Exterior And Stone Bed Of The Huum Core Electric Sauna Heater.
Huum Core Electric Sauna Heater In The Black Finish Standing In A Light Wood Sauna.
Click to enlarge

    HUUM CORE Electric Sauna Heater with Wooden Exterior | Black or Stainless Inlay, 6.5-10.5 kW

    HUUM CORE electric sauna heater with your choice of Alder, Aspen, or Thermo-Aspen exterior and a Black or Stainless Steel inlay. Available in 6.5, 9, and 10.5 kW.

    Build A Quote:

    CLIFF Core DROP HIVE HIVE Mini STEEL
    Add the required stones: CORE

    The CORE holds about 88 lb of 2 to 4 inch stones, and stones do not come in the box with the heater. That comes to 3 boxes. Stack them loosely so air can move between them and the elements stay covered, and plan on restacking once a year.

    I already have the approved 2–4 inch stones for CORE 3 × 33-lb boxes of HUUM STONES 24 (99 lb supplied) +$240.00 3 × 33-lb boxes of HUUM STONES 24 (99 lb supplied)(+$240.00)
    Choose a HUUM UKU controller (required)

    Your heater will not run without a UKU. Local mounts outside the hot room and runs the sauna from its own panel. Wi-Fi does the same and adds scheduling and remote start from the HUUM app, which is what you want when the sauna is not ten steps from the couch. Every finish below is the same controller underneath, so pick on looks and budget. Already own a UKU? Take the first option and we will check yours against this heater before anything ships.

    I already own a compatible HUUM UKU controller package UKU Local, Black +$1,062.00 UKU Local, Wood +$1,375.00 UKU Wi-Fi, Black (recommended) +$1,324.00 UKU Wi-Fi, Wood +$1,637.00 UKU Wi-Fi, Glass +$1,724.00 UKU Wi-Fi, Mirror +$1,987.00 UKU Wi-Fi, Gold +$1,987.00 UKU Wi-Fi, Black (recommended)(+$1,324.00)

    Share your selected heater size and add-ons. Prices and availability are confirmed when the link is opened.

    We added you to this product's waitlist and we'll send you an email when the product is available.

    Leave Waitlist

    This product is currently sold out.

    No worries! Enter your email, and we'll let you know as soon as it's back in stock.

    Fulfillment Partner:

    We partner with distributors and manufacturers who guarantee the lowest prices, fastest delivery, and additional 'whatever-it-takes' support. 

    Sauna Marketplace
    Zero Interest Payments:

    Buy Now, Pay Later with premium financing packages only available on Sauna Marketplace.

    Pay with HSA/FSA:

    We teamed up with FLEX to make HSA/FSA payments easier than ever.

    HUUM

    The HUUM CORE Electric Sauna Heater combines a compact footprint with a customizable wood exterior. Choose Alder, Aspen, or Thermo-Aspen panels and pair them with a Black or Stainless Steel inlay to match your sauna.

    • 6.5 kW: sauna rooms from 177 to 318 cubic feet
    • 9 kW: sauna rooms from 283 to 460 cubic feet
    • 10.5 kW: sauna rooms from 354 to 566 cubic feet

    The pre-fitted wood panels create a finished look and help reduce accidental contact with hot metal surfaces. The CORE can also be embedded into a sauna bench where approved clearances are maintained.

    Required control and sauna stones (2 boxes) are sold separately.

    Expert help that stays with you

    Whether you’re choosing one component or planning the whole room, small details can become expensive problems once installation begins. We know the products we sell and the questions to ask early, helping catch mismatched components, overlooked requirements, and installation issues while they are still easy to fix.

    Our job does not end when your order ships. We stay available through installation and beyond. If something needs attention, we stay involved, work the problem, and help see it through.

    We want you to feel good about choosing Sauna Marketplace long after your first session, and confident recommending us to a friend. That standard guides the advice we give, the products we sell, and the way we take care of our customers.

    Sauna and heater customers also receive free shipping on sauna accessories for life.

    Planning a sauna, or need help with one you purchased from us? Our founders have assembled many of the saunas we sell, visited the manufacturers, and use these products every day. New customers and existing Sauna Marketplace sauna and heater owners can Book a Ben consultation.

    Includes

    What Is Included

    6.5 KW, Stainless Steel

    Included with purchase

    Sauna heater, adjustable legs (4), unfinished metal shields (4), cover strips (4), wood panels (4), cover strip fastening screws, wood panel fastening screws, installation and operation manual.

    Required separately

    66 lb stones (quantity 2 × 33 lb 2 to 4 in stones boxes).

    6.5 KW, Black

    Included with purchase

    Sauna heater, adjustable legs (4), unfinished metal shields (4), cover strips (4), wood panels (4), cover strip fastening screws, wood panel fastening screws, installation and operation manual.

    Required separately

    66 lb stones (quantity 2 × 33 lb 2 to 4 in stones boxes).

    9 KW, Stainless Steel

    Included with purchase

    Sauna heater, adjustable legs (4), unfinished metal shields (4), cover strips (4), wood panels (4), cover strip fastening screws, wood panel fastening screws, installation and operation manual.

    Required separately

    66 lb stones (quantity 2 × 33 lb 2 to 4 in stones boxes).

    9 KW, Black

    Included with purchase

    Sauna heater, adjustable legs (4), unfinished metal shields (4), cover strips (4), wood panels (4), cover strip fastening screws, wood panel fastening screws, installation and operation manual.

    Required separately

    66 lb stones (quantity 2 × 33 lb 2 to 4 in stones boxes).

    10.5 KW, Stainless Steel

    Included with purchase

    Sauna heater, adjustable legs (4), unfinished metal shields (4), cover strips (4), wood panels (4), cover strip fastening screws, wood panel fastening screws, installation and operation manual.

    Required separately

    66 lb stones (quantity 2 × 33 lb 2 to 4 in stones boxes).

    10.5 KW, Black

    Included with purchase

    Sauna heater, adjustable legs (4), unfinished metal shields (4), cover strips (4), wood panels (4), cover strip fastening screws, wood panel fastening screws, installation and operation manual.

    Required separately

    66 lb stones (quantity 2 × 33 lb 2 to 4 in stones boxes).

    Contents vary by configuration. Check the row for the option selected above.

    Technical Specifications

    Technical Specifications

    Model & Application

    Model & Application
    Brand

    HUUM
    Catalog Product

    HUUM CORE Electric Sauna Heater with Alder Exterior | Black or Stainless Inlay, 6.5-10.5 kW
    Heater Type

    Electric sauna heater
    Model Number

    6.5 kW / 240 V / 1 phase: CORE ST ALDER 6; 6.5 kW / 240 V / 1 phase: CORE BK ALDER 6; 9 kW / 240 V / 1 phase: CORE ST ALDER 9; 9 kW / 240 V / 1 phase: CORE BK ALDER 9; 10.5 kW / 240 V / 1 phase: CORE ST ALDER 11; 10.5 kW / 240 V / 1 phase: CORE BK ALDER 11
    SKU / Part Number

    CORE ALDER

    Sauna Sizing

    Sauna Sizing
    Maximum Room Volume

    6.5 kW / 240 V / 1 phase: 318 ft³; 9 kW / 240 V / 1 phase: 460 ft³; 10.5 kW / 240 V / 1 phase: 566 ft³
    Minimum Room Volume

    6.5 kW / 240 V / 1 phase: 177 ft³; 9 kW / 240 V / 1 phase: 283 ft³; 10.5 kW / 240 V / 1 phase: 354 ft³

    Electrical

    Electrical
    Minimum Circuit

    6.5 kW / 240 V / 1 phase: 30 A; 9 kW / 240 V / 1 phase, 10.5 kW / 240 V / 1 phase: 50 A
    Phase

    1 phase
    Rated Current

    25 A
    Rated Power

    6.5 kW / 240 V / 1 phase: 6.5 kW; 9 kW / 240 V / 1 phase: 9 kW; 10.5 kW / 240 V / 1 phase: 10.5 kW
    Supply Voltage

    240 V
    Wire Size

    10 AWG

    Dimensions & Weight

    Dimensions & Weight
    Assembled Dimensions

    12.2"W x 12.2"D x 32.7"H
    Heater Depth

    15.16 in
    Heater Height

    32.68 in
    Heater Weight

    41.9 lb
    Heater Width

    15.16 in
    Minimum Host-Room Height

    75.98 in
    Product Weight

    41.9 lbs

    Installation Clearances

    Installation Clearances
    Ceiling-Clearance Reference Height Above Finished Floor

    32.68 in
    Ceiling-Clearance Reference Plane

    Top Of Rocks
    Clearance to Floor

    0.98 in
    Combustible Perimeter Clearance

    1.97 in
    Minimum Spacing from Adjacent Surfaces

    1.97 in
    Top of Rocks Above Finished Floor

    32.68 in

    Included & Required

    Included & Required
    Included Components

    Sauna Heater, Adjustable Legs (4), Unfinished Metal Shields (4), Cover Strips (4), Wood Panels (4), Cover Strip Fastening Screws, Wood Panel Fastening Screws, Installation and Operation Manual, 3-Year Limited Residential Warranty and 1-Year Limited Commercial Warranty (Excluding Elements)
    Required, Not Included

    66 lbs stones (Qty 2 x 33 lbs 2 to 4 in stones boxes)

    Certifications

    Certifications
    Certifications & Listings

    CE

    Warranty

    Warranty
    Residential Warranty

    3-Year Limited Residential Warranty and 1-Year Limited Commercial Warranty (Excluding Elements)

    Use the attached current manual and a qualified installer for final sizing, wiring, clearances, venting, and local-code compliance.

    How It Fits

    How This Product Fits the System

    What it is used for

    A wood-burning sauna heater that heats the room and stone mass for traditional löyly. Treat the stove, chimney, floor protection, clearances, combustion air, ventilation, and stones as one installation system.

    What to plan

    • Size from adjusted sauna volume, including the effect of glass, masonry, and other uninsulated surfaces; do not size from floor area alone.
    • Match the selected model's power or fuel, voltage, phase, circuit, wire, control, stone, and venting requirements before ordering.
    • Treat clearances, ceiling reference planes, ventilation, guarding, floor protection, and service access as one room-layout decision.
    • Follow the current installation manual and use a qualified installer.

    Required separately

    Complete the system with these items.

    Designed to work with

    Model-specific replacements and compatible system components.

    Other heater options

    Compare these options; sizing, power, controls, clearances, and stones may differ.

    Attachments
    Legacy manuals for older installations

    Use these only when the document revision matches the installed product.

    Gallery
    Huum Core Electric Sauna Heater With A Thermo-Aspen Wooden Exterior And Its Sauna Stone Bed.
    Huum Core Electric Sauna Heater With Alder Wood Exterior And Stainless Inlay
    Huum Core Electric Sauna Heater With Aspen Wood Exterior And Stainless Inlay
    Huum Core Electric Sauna Heater With Thermo-Aspen Exterior And Stainless Inlay
    Huum Core Electric Sauna Heater With Thermo-Aspen Exterior And Black Inlay
    Close-Up Of The Sauna Stones Set Into The Wooden Surround Of The Huum Core Electric Heater.
    Huum Core Electric Sauna Heater With A Wooden Exterior Installed Beside A Sauna Bench.
    Huum Core Electric Sauna Heater In A Glass-Walled Sauna Looking Out To A Garden.
    Water Being Poured Onto The Sauna Stones Of A Huum Core Heater, Raising Steam.
    Detail Of The Slatted Wooden Exterior And Stone Bed Of The Huum Core Electric Sauna Heater.
    Huum Core Electric Sauna Heater In The Black Finish Standing In A Light Wood Sauna.
    Click to enlarge
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        PLAN THE WHOLE SAUNA

        The room and heater still have to work as one system.

        Start with the room dimensions, then account for glass, masonry, insulation, ceiling height, required clearances, and available electrical service. That is how we move from a product that looks right to a sauna that heats evenly and comfortably.

        Compare sauna heaters

        See electric sauna heaters by output, stone mass, control style, and installation type. Size from adjusted room volume, not floor dimensions alone.

        Shop sauna heaters

        Shop complete saunas

        Explore indoor and outdoor saunas when you are planning beyond one component. Starting with the room makes heater size, controls, and accessories easier to get right.

        Explore complete saunas