Cube 210 Nero Sauna
4 Person
See all 3-4 person saunasAn outdoor sauna ritual framed in glass. The sculptural cube, reimagined in black-stained thermo-spruce.
ETL & CE certified
Colour
Recommended configuration
Heat Source
Choose your heater
Estimated total. Final price confirmed by your stockist.
Electric
Harvia Cilindro
Output options
9 kW PC90 manual controls
- Reaches 60 to 70°C (mild heat)
9 kW PC90XW digital + Wi-Fi (Recommended)
- Heats up to 110°C
- Includes Harvia Fenix Wi-Fi control panel
Electric vs wood-fired
This cabin can be heated two ways. Pick the ritual that suits you.
- Electric (Harvia Cilindro). One-touch convenience with precise temperature control and optional Wi-Fi scheduling. Ready to bathe in 30 to 45 minutes. No fuel or flue to manage.
- Wood-fired (Harvia Linear 18). The traditional experience. It brings the crackle and aroma of a real fire and a deep, enveloping heat. It needs no power supply, so it is ideal for off-grid gardens.
Both reach full löyly temperature. The choice comes down to convenience versus authenticity.
Wood-burning
Harvia Linear 18
Output options
14.3 kW (Recommended)
Electric vs wood-fired
This cabin can be heated two ways. Pick the ritual that suits you.
- Electric (Harvia Cilindro). One-touch convenience with precise temperature control and optional Wi-Fi scheduling. Ready to bathe in 30 to 45 minutes. No fuel or flue to manage.
- Wood-fired (Harvia Linear 18). The traditional experience. It brings the crackle and aroma of a real fire and a deep, enveloping heat. It needs no power supply, so it is ideal for off-grid gardens.
Both reach full löyly temperature. The choice comes down to convenience versus authenticity.
- 2 Year Warranty
- Stockists Worldwide
A four person cube sauna for the garden
- Seats
- 4
- Setting
- Outdoor
- Heat
- Floor-standing electric
- Timber
- Thermo-spruce, aspen benches
The Cube 210 seats four, which makes it the family size in the Hekla Cube range. The rounded shape and full glass front are made for a garden view, and the thermo-spruce shell resists moisture outdoors. Compare it with our other outdoor saunas and family sized saunas. Our sauna cost guide lists the costs a kit price leaves out.
Seats 4
Black-stained thermo-spruce
Full double-glazed glass front
Panoramic window
Harvia electric or wood-fired heater
Black shingle roof
Half-panoramic window
Wooden back panel
- 40mm thermo-spruce frame, black-stained
- Double-glazed full glass front panel
- 8mm tempered glass sauna door
- Half double-glazed panoramic window
- 2 × thermo-aspen benches
- Thermo-aspen duckboard flooring
- Sauna ventilation valve
- 2 × LED lights with switch
- Bituminous roof shingles
- 3 × foundation beams
- 2 × metal frame bands
Heat Source
This sauna is independently tested and certified to meet the electrical-safety standards of both North America and Europe — so you get the same tested build wherever it is installed.
- ETL Listed — conforms to US & Canadian safety standards
- CE marked — European conformity
- Tested by an accredited independent laboratory
Thermo-Aspen Benches
Smooth, splinter-free thermo-aspen benches and floor inside a heat-treated spruce shell.
Double-Glazed Glass Front
Full-height toughened glass, double-glazed to keep the heat in and the weather out.
Ambient LED Lighting
Dimmable warm LED strip lighting for a soft, restful glow.
The Hekla Difference.
The Cube is built from thermo-spruce, heat treated so it stays stable through rain and frost. Inside, the benches and floor are thermo-aspen. It is smooth, resin-free and comfortable against the skin.
Customer Reviews
Improved sleep
Eased muscles
Heart Health
Before you buy
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Guide
Garden Sauna Guide
How to plan a garden sauna in the UK: where to put it, the base it needs, electric or wood-fired, the planning rules in each nation and how the build works.
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Guide
Sauna Buying Guide
How to choose a home sauna: indoor or outdoor, traditional or infrared, which Harvia heater and controls to specify, what size you need and how to prepare your site.
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Guide
How Much Does a Home Sauna Cost?
From £200 infrared cabins to £25,000 bespoke builds. Most people spend £3,000 to £9,000 on a home sauna. Real 2026 prices by tier and the costs kits leave out.
