KOVE Cube Sauna 3–4 Person Outdoor Sauna – Premium Spruce Wood, 6kW Harvia Heater, Modern Cube Design

Premium Outdoor Sauna with Genuine Harvia Heater

Create your own outdoor wellness space with the KOVE Cube Sauna – 3–4 Person, a premium traditional outdoor sauna designed for comfortable shared sessions, authentic heat and year-round UK use.

Crafted from premium Canadian Spruce and supplied with a genuine Harvia 6kW electric sauna heater as standard, the KOVE Cube combines authentic sauna performance with contemporary architectural design. Its spacious interior, panoramic glazed frontage and waterproof roof system make it equally suited to private gardens, home gyms and professional wellness environments.

Contemporary Cube Design, Maximum Interior Space

The cube-style construction maximises usable interior volume, providing generous bench seating and excellent headroom without increasing the overall footprint. Straight walls create a spacious, comfortable environment, while the large glazed frontage allows natural light into the cabin for a bright, relaxing sauna experience.

Its clean, self-supporting structure avoids unnecessary external banding and bulky trims, creating a refined architectural appearance that complements both traditional and contemporary outdoor spaces.

• Comfortably accommodates 3–4 adults
• Excellent headroom and generous bench seating
• Panoramic glazed frontage for a bright interior
• Clean architectural styling with no visible exterior banding

Crafted from Premium Canadian Spruce

Every KOVE Cube Sauna is built from carefully selected Canadian Spruce, a timber widely used in traditional sauna construction for its strength, stability, natural insulation and attractive pale finish.

Canadian Spruce helps create the bright, calming interior associated with Nordic-style saunas while providing excellent durability for long-term outdoor use throughout the changing British seasons.

• Solid Canadian Spruce construction
• Excellent natural insulation and heat retention
• Strong structural stability
• Smooth internal bench seating
• Premium timber finish for residential and professional settings

Timber is a natural material. Variations in grain, knots and colour are normal and form part of the unique character of every sauna.

Powered by a Genuine Harvia Heater

The KOVE Cube Sauna – 3–4 Person is supplied with a genuine Harvia 6kW electric sauna heater as standard.

Designed by Harvia, one of Finland's most respected sauna brands, the heater delivers reliable performance, excellent heat distribution and the authentic stone-heated sauna experience that has made Harvia trusted worldwide for more than 70 years.

• Genuine Harvia 6kW electric sauna heater
• Powerful, even heat distribution
• Suitable for traditional dry sauna sessions and steam over the stones
• Designed to reach typical sauna temperatures in approximately 45 minutes under normal conditions

Actual heat-up times will vary depending on ambient temperature, electrical supply, ventilation, initial cabin temperature and how frequently the door is opened.

Electrical Requirements

A fixed-wired electrical connection is required. No standard plug is supplied. Installation must be completed by a qualified electrician in accordance with current UK regulations, including Part P and BS 7671 where applicable.

Weather-Protected Roof for Year-Round UK Use

The KOVE Cube features a waterproof membrane with timber roof slats, providing dependable protection from rain and moisture while maintaining its clean architectural roofline.

• Waterproof roof membrane
• No asphalt shingles
• Designed specifically for year-round UK outdoor use
• Low-maintenance roof construction

Panoramic 8mm Tempered Glass Front

The full-width glazed frontage uses 8mm tempered safety glass, creating a bright, spacious interior while maintaining strength, insulation and durability. The panoramic design makes the sauna feel open and inviting while complementing modern outdoor spaces.

Complete Sauna Starter Kit Included

Everything required to enjoy an authentic traditional sauna experience is included.

• Wooden bucket and ladle
• Harvia sauna stones
• Sandglass timer
• Hygro-thermometer (temperature and humidity gauge)
• Sauna light

Installation & Site Requirements

The KOVE Cube Sauna is supplied flat-packed and designed for straightforward outdoor assembly with clear installation instructions.

• Requires a level, solid base such as concrete, paving slabs or suitably reinforced decking
• Requires a qualified electrician for heater connection
• No plumbing required
• Delivered flat-packed with assembly instructions
• Freestanding outdoor installation

Assembly is typically completed by two to three capable people within a day, although timings will vary depending on experience, access and site conditions. We also recommend using a tradesman if you are not experienced in DIY. Unfortunately, we cannot accept returns if the installation is faulty.

Delivery is kerbside only. Please ensure suitable access and adequate assistance are available to move the packaged components to the installation area.

Outdoor Use, Timber Treatment & Maintenance

The KOVE Cube Sauna is designed specifically for outdoor environments and is suitable for year-round UK use when installed and maintained correctly.

Like any premium timber outdoor structure, periodic inspection and exterior treatment will help preserve its appearance and maximise its service life.

• Inspect external timber and roof periodically
• Keep the base area well drained
• Reapply a suitable exterior timber treatment when required
• Clean the interior using products suitable for untreated sauna timber

Recommended Exterior Finish

We recommend applying a suitable exterior wood oil shortly after installation. Many customers choose Danish Oil, which enhances the natural grain while adding protection from the elements.

Please note that Danish Oil will naturally deepen the colour of the timber over time. Alternative exterior oils, stains or paints may also be used depending on your preferred finish. Because appearance is a personal choice, the sauna is supplied untreated.

Do not apply conventional paint, varnish or unsuitable chemical treatments to the internal benches or interior sauna surfaces.

Is the KOVE Cube Sauna Right for You?

The KOVE Cube is an excellent choice if you're looking for:

• A contemporary outdoor sauna with clean architectural styling
• Generous internal space within a compact footprint
• Premium materials and genuine Harvia heating
• Authentic traditional sauna performance
• Reliable year-round outdoor use

Ideal For

• Outdoor garden and patio installations
• Shared home wellness and recovery routines
• Post-workout recovery and contrast therapy
• Home gyms and wellness spaces
• Hotels, gyms, studios and boutique wellness centres

Key Specifications

• Brand: KOVE
• Model: KOVE-CUBE4
• Capacity: 3–4 People
• External Dimensions: 2000mm (W) × 1800mm (D) × 2100mm (H)
• Internal Height: Approximately 1970mm (see product images for further dimensions)
• Material: Solid Canadian Spruce
• Wood Thickness: 38mm
• Heater: Genuine Harvia 6kW electric sauna heater
• Glass: 8mm tempered safety glass front
• Roof: Slatted timber roof with waterproof membrane
• Design: Cube-style outdoor sauna with no porch or external banding
• Installation: Freestanding outdoor unit supplied flat-packed
• Electrical Supply: Fixed-wired connection by a qualified electrician
• Plumbing: Not required
• Use: Outdoor residential and suitable professional environments
• Warranty: 2 years, subject to terms and conditions

Is This Suitable for Commercial Use?

The KOVE Cube Sauna is suitable for many commercial environments, including boutique gyms, hotels, recovery studios and wellness centres, subject to expected usage levels and correct installation.

If you're planning to install the sauna in a commercial setting, our team will be happy to recommend the most suitable model and heater specification for your requirements.

Why Choose KOVE?

KOVE designs professional-grade wellness equipment that combines premium materials, thoughtful engineering and timeless design. Every outdoor sauna is built for dependable performance, fitted with a genuine Harvia heater and backed by UK-based customer support.

Whether it's part of your daily recovery routine, a place to unwind after work or the centrepiece of your outdoor wellness space, the KOVE Cube Sauna has been designed to deliver an authentic sauna experience for years to come.

Balance by Design.