HUUM CORE Thermo-Aspen CORE Series Sauna Heater, Thermo-Aspen Wood Exterior, Up to 10.5kW

The HUUM CORE Thermo-Aspen Sauna Heater is designed to complement the aesthetic of your sauna room while delivering exceptional performance and luxurious, spa-quality steam with a premium Nordic look. Combining advanced engineering with natural materials, the CORE Thermo-Aspen brings warmth, elegance, and power into a compact, design-forward heater.

Crafted in Estonia—where sauna culture is deeply rooted—the CORE Thermo-Aspen features a durable stainless-steel body accented with pre-fitted thermo-aspen wood side panels and a selection of inlay finishes. Thermo-aspen’s rich tone and enhanced durability make it an ideal choice for high-heat environments, seamlessly blending with upscale sauna interiors. 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, efficient heating, the CORE allows direct contact between stones and heating elements, producing soft, abundant steam when water is ladled over the stones. Available in multiple power ratings, the CORE Thermo-Aspen accommodates a wide range of sauna room sizes and pairs effortlessly with HUUM UKU controls (sold separately) for precise, intuitive control.

Backed by a 3-year limited residential warranty, the HUUM CORE Thermo-Aspen Sauna Heater is an embodiment of pure Nordic design—offering premium materials, versatile functionality, and long-lasting relaxation.

Features

• 240V / Single-Phase operation

• Premium thermo-aspen wood panels for a refined, upscale appearance

• Customizable design with a choice of inlay finishes

• Wood panels provide a finished look and help reduce burn risk

• Designed to match and enhance sauna room aesthetics

• 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 Thermo-Aspen Sauna Heater

• Adjustable Legs (4)

• Unfinished Metal Shields (4)

• Cover Strips (4)

• Thermo-Aspen 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 THERMO-ASPEN 6

  • Room Size: 177–318 cu. ft.

  • Wattage: 6.5 kW

  • Amperage: 25

  • Wire Size: AWG 10

• CORE THERMO-ASPEN 9

  • Room Size: 283–460 cu. ft.

  • Wattage: 9.0 kW

  • Amperage: 37.5

  • Wire Size: AWG 8

• CORE THERMO-ASPEN 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)

Thermo-Aspen Panel Specifications

• Model: CORE THERMO-ASPEN PANEL

• Material: Thermo-Aspen Wood

• Width: 15.1" (38.4 cm)

• Depth: 1.1" (2.7 cm)

• Height: 31.5" (80 cm)