HUUM CORE Alder CORE Series Sauna Heater, Alder Wood Exterior, Up to 10.5kW

The HUUM CORE Alder Sauna Heater is designed to seamlessly match the aesthetic of your sauna room while delivering exceptional performance and luxurious, gentle steam. Blending natural materials with modern Nordic engineering, the CORE Alder offers a refined, warm appearance paired with powerful functionality.

Crafted in Estonia—where sauna is a way of life—the CORE Alder features a durable stainless-steel body complemented by pre-fitted alder wood side panels and a selection of inlay finishes. The natural wood panels enhance the heater’s visual harmony with the sauna interior while also helping to reduce the risk of accidental burns. Thanks to its compact footprint and minimal safety clearances, the CORE thrives in tight spaces and offers flexible installation options, including full integration into a sauna bench.

Engineered for fast, even heating, the CORE Alder allows direct contact between stones and heating elements, producing soft, abundant steam when water is ladled over the stones. Available in multiple power ratings, it accommodates a wide range of sauna room sizes and pairs seamlessly with HUUM UKU controls (sold separately) for complete and precise control.

Backed by a 3-year limited residential warranty, the HUUM CORE Alder Sauna Heater is an embodiment of pure Nordic design—combining natural beauty, durability, and long-lasting relaxation.

Features

• 240V / Single-Phase operation

• Natural alder wood panels for a warm, finished appearance

• Customizable design with a choice of inlay finishes

• Wood panels help reduce the risk of burn injuries

• Designed to match and complement sauna room interiors

• Compact footprint with minimal safety clearances

• Can be fully embedded into a sauna bench

• Direct contact between stones and heating elements for rich steam

• Industrial-quality stainless steel heating elements

• Designed, engineered, and manufactured in Estonia

• Compatible with HUUM UKU controls (sold separately)

• 66 lb stone capacity (requires two boxes of stones, sold separately)

• Dimensions: 12.2" W x 12.2" D x 32.7" H (31 x 31 x 83 cm)

Includes

• HUUM CORE Alder Sauna Heater

• Adjustable Legs (4)

• Unfinished Metal Shields (4)

• Cover Strips (4)

• Alder Wood Panels (4)

• Cover Strip Fastening Screws

• Wood Panel Fastening Screws

• Installation and Operation Manual

• 3-Year Limited Residential Warranty

• 1-Year Limited Commercial Warranty (excluding heating elements)

Specifications

Available Models

• CORE ALDER 6

  • Room Size: 177–318 cu. ft.

  • Wattage: 6.5 kW

  • Amperage: 25

  • Wire Size: AWG 10

• CORE ALDER 9

  • Room Size: 283–460 cu. ft.

  • Wattage: 9.0 kW

  • Amperage: 37.5

  • Wire Size: AWG 8

• CORE ALDER 11

  • Room Size: 354–566 cu. ft.

  • Wattage: 10.5 kW

  • Amperage: 43.75

  • Wire Size: AWG 8

General Heater Specifications

• Room Size Range: 177–566 cu. ft.

• Wattage Range: 6.5–10.5 kW

• Voltage: 240V

• Phase: Single-Phase

• Amperage Range: 25–43.75

• Circuit Breaker: See Installation and Operation Manual

• Wire Size: AWG 10 or 8

• Safety Listing: CE Certified

• Minimum Ceiling Height: 80" (203 cm)

• Safety Distances: See Installation and Operation Manual

• Stone Capacity: 66 lbs (30 kg)

• Stone Size: 2"–4" (5–10 cm)

• Heater Weight: 41.9 lbs (19 kg)

• Shipping Weight (with stones): 107.9 lbs (48.9 kg)

Alder Panel Specifications

• Model: CORE ALDER PANEL

• Material: Alder Wood

• Width: 15.1" (38.4 cm)

• Depth: 1.1" (2.7 cm)

• Height: 31.5" (80 cm)