Powerful 10.5kW Performance

Designed for larger residential sauna rooms approximately 354–566 adjusted cubic feet.

Customizable Exterior

Finish the heater with compatible materials that complement your sauna instead of working around a predetermined factory casing.

66 lb Stone Capacity

The stone mass retains heat and creates soft, satisfying steam when water is ladled over the heated stones.

Compact Footprint

The approximately 15.2" square body delivers high-output heating while preserving valuable floor and bench space.

Minimal Safety Distances

Approximately 2" of side clearance provides impressive placement flexibility for a heater of this output.

Bench Integration Capability

The CORE can be incorporated into a properly designed sauna bench when all HUUM clearance and airflow requirements are followed.

Smart Control Options

Pair the heater with a HUUM UKU WiFi control for precise temperature management and convenient remote operation.

What Makes the HUUM CORE Different?

Large-Sauna Power Without the Visual Bulk

Higher-output sauna heaters can easily become one of the most visually dominant elements inside a sauna.

The CORE 10.5kW offers a different approach.

Its compact body keeps the heater visually restrained, while the customizable exterior allows it to become part of the surrounding architecture.

Pair that with a 66 lb stone capacity, minimal safety distances, and bench-integration capability, and the CORE becomes an especially compelling heater for premium residential sauna projects.

You get the heating capability a larger sauna needs without sacrificing the finished design.

• HUUM CORE 10.5kW BK/ST Electric Sauna Heater
  
• 4 Adjustable Legs
  
• 4 Unfinished Metal Exterior Shields
  
• 4 Upper Cover Strips
  
• Cover Strip Fastening Hardware
  
• Installation & Operation Manual
  

Required but Sold Separately

• HUUM UKU Control System
  
• Approx. 66 lbs of Sauna Stones
  
• Heat-Resistant Electrical Connection Cable
  
• Optional HUUM CORE Wood Panels or Custom Exterior Finish

General

• Brand: HUUM
  
• Series: CORE
  
• Model: CORE 11 BK/ST
  
• Heater Type: Electric Sauna Heater
  
• Installation: Floor-Standing
  
• Power: 10.5kW at 240V
  
• Construction: Stainless Steel / Customizable Exterior
  
• Country of Origin: Estonia
  

Sauna Room Sizing

• Recommended Sauna Volume: Approx. 354–566 cu. ft.
  
• Metric Range: Approx. 10–16 m³
  

Important: Glass, tile, stone, brick, concrete, log walls, and other uninsulated surfaces increase the effective heating load of the sauna.

Electrical

• Voltage: 240V
  
• Power: 10.5kW
  
• Amperage: Approx. 43.75A
  
• Circuit Breaker: 50A
  
• Recommended Wire Size: 8 AWG
  
• Required Control: HUUM UKU
  
• Professional Installation: Required by a licensed electrician
  

Stones

• Stone Capacity: Approx. 66 lbs
  
• Stones Included: No
  
• Stones Required: Yes
  

Correct stone placement and sufficient airflow are essential for heater performance and longevity.

Dimensions

• Width: Approx. 15.2"
  
• Depth: Approx. 15.2"
  
• Height: Approx. 32.7"
  
• Heater Weight: Approx. 41.9 lbs
  
• Minimum Side Clearance: Approx. 2"
  
• Minimum Clearance Above Heater: Approx. 43.3"

Plan your HUUM CORE installation with manufacturer resources covering heater placement, electrical requirements, safety clearances, exterior customization, bench integration, stone loading, UKU controls, and operation.

Before installation, we recommend sharing all manufacturer documentation with your licensed electrician and sauna installer so each can review the requirements relevant to the project.

Click Here for the HUUM Core Installation & Owner's Manual

Click Here for the HUUM UKU Control Installation & Owner's Manual

Click Here for Video on Installing the UKU Main Module

Click Here for Video on the UKU Control Installation

Click Here for Video on how to connect the UKU Control to WiFi

Free Shipping: This product qualifies for free shipping within the contiguous United States.

Processing Time: In-stock orders typically leave the warehouse within 1–3 business days.

Multiple Packages: Heater, stones, control, and accessories may ship separately and arrive on different days.

Tracking: Tracking information will be emailed as each shipment leaves the warehouse.

Inventory: Contact NW Immersion before ordering if you have a firm project or installation deadline.

Inspect Upon Arrival: Check all packages promptly for visible damage and photograph any damage before discarding packaging.

HUUM Manufacturer Warranty

The HUUM CORE includes a 3-year manufacturer warranty for private residential use when properly installed, operated, and maintained according to HUUM requirements.

Warranty coverage is subject to HUUM’s current terms and may depend on correct heater sizing, electrical installation, ventilation, stone loading, operation, and maintenance.

As an Authorized HUUM Dealer, NW Immersion can assist with troubleshooting, warranty guidance, and manufacturer communication.