Why We Like It

The Smartmak 6–8 Person Hybrid Sauna offers unusual versatility for a home sauna of this size by combining full-spectrum infrared heating with a traditional Harvia sauna stove. The two heating systems are designed to be used separately, allowing owners to choose between an infrared session and a more traditional high-temperature sauna experience.

Its large interior, panoramic glass, smart controls and extensive lighting and audio features make this especially appealing for homeowners creating a substantial home or backyard wellness space.

Best For

Ideal for families, couples or homeowners who want a large-capacity sauna with both infrared and traditional heating options rather than committing to a single sauna type.

Its 6–8-person configuration also makes it one of the larger-capacity options in the ZenZone Center sauna collection.

Features Worth Considering

• Hybrid sauna design: Provides both full-spectrum infrared heating and a traditional sauna stove system; the two modes are intended to be used separately.
• 10 full-spectrum infrared heating elements: The 3.5 kW infrared system is listed as reaching temperatures up to approximately 149°F.
• Harvia 6 kW sauna stove: Provides a traditional higher-temperature sauna experience, with the listing specifying temperatures up to approximately 195°F.
• Large-capacity interior: Designed for up to 6–8 people, depending on seating configuration and individual space requirements.
• Smart Wi-Fi controls: Temperature and other compatible functions can be controlled remotely by smartphone.
• Bluetooth audio: Integrated speakers provide in-sauna audio capability.
• Chromotherapy lighting: Includes 7-color interior lighting.
• Panoramic glass: Large glass areas create a more open interior environment.
• Additional amenities: Includes an air-purification/ionizer system and sauna accessories.
• Included sauna equipment: Sauna stove, sauna stones, water bucket and ladle are listed among the included components.

Things to Know Before Buying

This is a large sauna requiring substantial installation space and dedicated electrical service. The listing specifies a 220–240V / 30A electrical supply and recommends professional installation.

The infrared and traditional sauna systems are intended to operate separately rather than simultaneously.

Also note that the long interior table/shelf shown in the product images is intended for storage—not for sitting or lying down.

Amazon's supplied product information contains conflicting references to the wood species, describing it as both Canadian red cedar and Canadian hemlock. Buyers should confirm the current construction materials, electrical requirements, included components and other specifications directly on the Amazon listing before purchasing.

Product Specifications

Brand: Smartmak
Model: SMT-040F
Capacity: Up to 6–8 persons
Sauna Type: Hybrid — full-spectrum infrared and traditional sauna
Infrared System: 3.5 kW
Infrared Heating Elements: 10 full-spectrum elements
Infrared Maximum Temperature: Approximately 149°F / 60°C
Traditional Heater: Harvia 6 kW sauna stove
Traditional Maximum Temperature: Approximately 195°F / 90°C
Electrical Requirement: 220–240V / 30A
Controls: Smart Wi-Fi connectivity
Audio: Bluetooth with integrated speakers
Lighting: 7-color chromotherapy
Door/Glazing: Panoramic glass
Included Accessories: Sauna stove, sauna stones, water bucket and ladle
Product Dimensions Listed: Approximately 86.7"W × 86.7"D × 82.74"H
Package Dimensions: 90.6 × 55.2 × 44.1 inches
Part Number: SMT-040F
Wood Species: Verify with seller before purchase; Amazon-supplied listing information is inconsistent