• 2-4 Person Hiki S Steam Garden Outdoor Sauna | Premium Thermowood
  • 2-4 Person Hiki S Steam Garden Outdoor Sauna | Premium Thermowood
  • 2-4 Person Hiki S Steam Garden Outdoor Sauna | Premium Thermowood
  • 2-4 Person Hiki S Steam Garden Outdoor Sauna | Premium Thermowood
  • Premium Thermowood Garden Sauna for 2 to 4 People side view
  • Hiki S Steam Garden Outdoor Sauna rear view
  • 2-4 Person Hiki S Steam Garden Outdoor Sauna | Premium Thermowood side view
  • 2-4 Person Hiki S Steam Garden Outdoor Sauna | Premium Thermowood
  • 2-4 Person Hiki S Steam Garden Outdoor Sauna | Premium Thermowood
  • Outdoor sauna package with 6.6kW electric heater included
  • 2-4 Person Hiki S Steam Garden Outdoor Sauna | Premium Thermowood
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2-4 Person Hiki S Steam Garden Outdoor Sauna | Premium Thermowood

HEAT-SM1015

Complete Hiki S premium outdoor sauna package with Thermowood cabin, 6.6kW electric sauna heater, sauna accessories and delivery to most UK mainland postcodes included.

  • External size: 1496 × 2019 × 2161mm
  • Internal size: approx. 1410 × 1500 × 1930mm
  • Capacity: comfortable for 2-3 adults, with space for up to 4 depending on use
  • Heater included: 6.6kW electric sauna heater for a traditional steam sauna experience
  • Premium materials: 40mm Thermowood walls and roof, bronze tempered glass and Thermo-Aspen benches
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🚚 Estimated Delivery: Monday, July 27 - Wednesday, July 29

⚡ High demand: Only 1 remaining for this delivery window.
£10,741.37
£10,741.37
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We ensure your sauna arrives safely via a specialized palletised delivery service. To help us provide a smooth experience, please review the following logistics:

  • Arrival & Access: Deliveries are made kerbside using a 7.5 or 18-tonne truck. If your property has restricted access for vehicles of this size, please notify us immediately. Note: Failure to advise on access may result in additional charges if a re-delivery on a smaller vehicle is required.
  • Handling: The driver will deliver to the kerbside only and is not responsible for moving the pallet further onto the property.
  • Delivery Charges: Free delivery is available to most areas. Please use the delivery fee calculator on the shopping cart page to verify your specific postcode.
  • Arrival Inspection: Please inspect your order upon delivery. If you notice any significant damage to the packaging, please reject the delivery and instruct the driver to return it to us immediately.

We want you to be completely satisfied with your wellness investment. If you change your mind, we offer a 30-day returns window.

  • Items must be returned in their original, unassembled packaging.
  • Please contact our support team to initiate the return process and receive further instructions.

Invest with confidence. This sauna is protected by a comprehensive manufacturer’s warranty to ensure long-term peace of mind:

  • Includes 3 years warranty on the structure and components covered by the respective conditions.

For more details on maintaining your sauna to keep it within warranty guidelines, please refer to the provided instruction manual.

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Outdoor Sauna Hiki S | Premium Thermowood Garden Sauna for 2 to 4 People

Hiki S Premium Thermowood Outdoor Sauna Package

The Hiki S is a premium compact outdoor sauna designed for homeowners who want a proper traditional sauna experience in a smaller garden footprint. Built from Thermowood with bronze tempered glass and Thermo-Aspen benches, it gives you a private Nordic-style garden sauna that feels refined, practical and built for regular outdoor use.

This Pro-Line Direct package includes the Hiki S Thermowood sauna cabin, 6.6kW electric sauna heater, sauna accessories and delivery to most UK mainland postcodes. That means the main essentials are included in the package price, making it easier to understand the true cost before ordering.

Why Choose the Hiki S Outdoor Sauna?

  • Complete sauna package: includes the Thermowood cabin, 6.6kW electric heater, sauna accessories and delivery to most UK mainland postcodes
  • Traditional steam sauna experience: electric heater with sauna stones for classic high-heat sauna bathing
  • Premium Thermowood build: 40mm Thermowood walls and roof, plus 28mm Thermowood floor and decking
  • Compact outdoor footprint: suitable for gardens, patios, terraces, courtyards and home wellness spaces
  • Private architectural design: darker, more enclosed styling than fully glass-fronted cube saunas
  • Bronze tempered glass: 8mm glass door and 6mm glass window for a clean premium finish
  • Comfortable bench layout: two-level Thermo-Aspen benches with integrated backrests
  • 3-year warranty: supplied with manufacturer warranty support, subject to correct installation and maintenance

A Complete Garden Sauna Package

When comparing outdoor saunas, the headline price does not always show what is actually included. Some sauna listings may separate the cabin, heater, stones, accessories, delivery or installation requirements.

This Hiki S package is designed to give customers a clearer buying route. The price includes the premium Thermowood outdoor sauna cabin, a 6.6kW electric sauna heater, sauna accessories and delivery to most UK mainland postcodes.

For a high-value garden sauna purchase, that matters. You can compare the package as a complete outdoor sauna setup rather than only looking at the cabin price.

Designed for Smaller Gardens and Premium Outdoor Spaces

The Hiki S is ideal if you want a luxury outdoor sauna without needing a large garden building. Its compact rectangular footprint works well in modern gardens, patios, terraces and courtyard spaces, while the darker exterior profile gives the sauna a more private and architectural appearance.

Inside, the Thermowood finish, Thermo-Aspen benches and bronze glass create a calm sauna environment for couples, individual use, post-workout recovery and regular home wellness sessions.

Premium Thermowood Construction

Thermowood is a strong material choice for outdoor saunas because it is heat-treated to improve stability and reduce movement caused by changes in moisture and temperature. This helps make it suitable for sauna cabins, cladding and outdoor structures.

The Hiki S uses 40mm Thermowood for the walls and roof, giving the cabin a solid, premium structure. The floor and decking use 28mm Thermowood, while the internal benches are made from Thermo-Aspen for a comfortable sauna seating area.

Traditional Steam Sauna Heat with 6.6kW Electric Heater

The included 6.6kW electric sauna heater is designed to heat the cabin and sauna stones for a traditional steam sauna experience. Once the stones are hot, water can be ladled over them to create bursts of steam and humidity inside the sauna.

Because this sauna includes a 6.6kW heater, it must be hardwired on a suitable dedicated circuit by a qualified electrician. It is not a plug-and-play sauna.

Comfortable Capacity

The Hiki S is best suited to 2-3 adults for comfortable regular use. Depending on how it is used, it can accommodate up to 4 people, but for the best day-to-day sauna experience, 2-3 adults is the most realistic capacity.

This makes it a strong choice for couples, small families, home gyms, garden wellness spaces, holiday lets and premium rental properties where a compact but high-quality outdoor sauna is needed.

Who Is This Outdoor Sauna Best For?

  • Homeowners looking for a premium compact garden sauna
  • Couples wanting a private outdoor wellness space
  • Small families wanting a traditional steam sauna at home
  • Garden rooms, patios, terraces and smaller outdoor spaces
  • Home gym and recovery spaces
  • Holiday lets, lodges and premium rental properties
  • Buyers who want a complete sauna package with heater, accessories and delivery included

What Is Included?

  • Hiki S Thermowood outdoor sauna cabin
  • 6.6kW electric sauna heater
  • Sauna accessories
  • Two-level Thermo-Aspen benches
  • Integrated Thermo-Aspen backrests
  • Black-painted bench fronts
  • 8mm bronze tempered glass door
  • 6mm bronze tempered glass window
  • Self-adhesive waterproof roof covering
  • Black metal threshold
  • Screws and fittings
  • Assembly manual
  • Delivery to most UK mainland postcodes

 

Technical Specification

Product Hiki S Premium Thermowood Outdoor Sauna Package
SKU HEAT-SM1015
External dimensions 1496 × 2019 × 2161mm
Internal dimensions Approx. 1410 × 1500 × 1930mm
Internal volume Approx. 4.1m³
Recommended capacity 2-3 adults comfortably, up to 4 depending on use
Heater 6.6kW electric sauna heater included
Sauna type Traditional steam sauna
Installation type Outdoor sauna for garden, patio or terrace installation
Wall and roof material 40mm Thermowood
Floor and decking 28mm Thermowood
Benches Two-level Thermo-Aspen benches with integrated backrests
Door glass 8mm bronze tempered glass
Window glass 6mm bronze tempered glass
Delivery Included to most UK mainland postcodes
Warranty 3 years, subject to correct installation, use and maintenance

 

Please note: installation, base preparation and electrical connection are not included unless agreed separately. The 6.6kW heater must be installed by a qualified electrician.

Outdoor Sauna Base and Installation Requirements

The Hiki S should be installed on a stable, level and weather-resistant base. Suitable base options usually include a concrete slab, reinforced timber decking, level paving or another solid surface that can support the sauna safely.

The sauna should not be placed directly onto soil or uneven ground. Good drainage is also important because standing water around an outdoor sauna can reduce the long-term performance of the timber and structure.

Before ordering, check that there is enough access for palletised delivery and enough space to move the sauna components safely to the final installation area.

Electrical Requirements

This sauna includes a 6.6kW electric heater and must be connected by a qualified electrician. The electrical supply should be suitable for the heater rating, outdoor installation conditions and current UK electrical regulations.

Your electrician should confirm the required circuit, cable route, protection and outdoor electrical suitability before installation. Do not attempt to connect the heater using a standard plug socket.

Delivery Information

Delivery is included to most UK mainland postcodes. Remote areas, restricted-access locations or special delivery requirements may need to be checked before ordering.

The sauna is delivered by palletised freight. Delivery is usually kerbside, so please make sure there is suitable vehicle access and enough space to unload and safely store the sauna components before assembly.

Before You Order

Before placing your order, we recommend checking the available space, base preparation, delivery access and electrical requirements. This is especially important for garden saunas because the final location needs to be level, accessible, well drained and suitable for the 6.6kW heater connection.

If you are unsure whether the Hiki S is suitable for your property, contact us before ordering and we can help you check the key details.

Important installation information

  • The sauna must be installed on a stable, level, weather-resistant base
  • Suitable foundations include concrete, decking, or level stone/tile surfaces
  • The sauna heater must be connected by a qualified electrician in line with local regulations
  • Please ensure there is suitable delivery access and space to unload/store components if required

 

Instructions

Outdoor Sauna Hiki S Instruction Manual View/Download
Kajo Heater Instruction Manual View/Download
LED Waterproof Power Supply View/Download

FAQ

What is a steam sauna and how does it work?
What is a steam sauna and how does it work?

A steam sauna uses an electric heater filled with sauna stones. Pouring water over the hot stones creates steam and increases humidity, giving you the traditional Finnish-style sauna experience with hot, humid air and a stronger, more intense heat.

How hot does a steam sauna get?

Steam saunas usually run at higher air temperatures than infrared models. The final temperature depends on the heater output, cabin size, and insulation. Some people prefer short, intense sessions, while others enjoy a slightly milder heat with added steam.

Do steam saunas need plumbing?

No. Steam is produced by pouring water onto the heated stones by hand. There is no built-in water supply or drain inside the sauna. The room around it simply needs normal ventilation so any moisture can clear when the door is opened.

What power supply does a steam sauna need?

Steam sauna heaters vary by model, with many home units ranging from 3 kW to 9 kW.
Important: Any heater above 2.5 kW must be hard-wired on a dedicated circuit by a qualified electrician. Always check the heater rating before installation.

How long does a steam sauna take to heat up?

Most steam saunas take around 30 to 45 minutes to reach temperature, depending on the heater size, cabin volume, insulation, and room conditions. Allowing enough preheat time helps the stones get hot enough to produce steady steam.

Do steam saunas create a lot of moisture?

Inside the cabin, yes, and that is part of the experience. Outside the sauna, moisture is usually limited and mainly escapes when the door is opened. Standard room ventilation, such as a window or extractor fan, is normally enough to manage it.

Where can a steam sauna be installed?

Steam saunas can be fitted in indoor areas such as home gyms, utility rooms, larger bathrooms, or dedicated wellness spaces. Outdoor-rated models can also be installed in gardens, on patios, or in sheltered outdoor areas. Always check whether the model is intended for indoor or outdoor use.

Are steam saunas safe to use?

Steam saunas are commonly used at home and in commercial settings. It is important to stay hydrated, avoid alcohol before use, and leave the sauna if you start to feel unwell. Anyone who is pregnant or has a medical condition, particularly heart-related issues, should speak to a healthcare professional first.

How often should I use a steam sauna?

Many people use a steam sauna three to five times each week. Beginners often start with shorter sessions of around 8 to 12 minutes, then gradually increase the time as they become more comfortable with the heat.

Do steam saunas need much maintenance?

Maintenance is generally simple. Wipe the benches after use, leave the door open so the cabin can dry, and occasionally check, clean, or reposition the stones in line with the manufacturer’s guidance. If the sauna is installed outside, exterior wood treatment may also be needed.

What is the difference between a steam sauna and an infrared sauna?

A steam sauna heats the air and adds humidity to create a traditional high-heat environment. An infrared sauna warms the body more directly while keeping the air temperature lower. The right choice depends on whether you prefer a hotter, classic sauna feel or a gentler style of heat.
What is an outdoor sauna and how does it work?
Can any sauna be installed outdoors?

No. A sauna should only be placed outside if it has been built and rated for outdoor use. Outdoor models are made with features such as treated timber, stronger panel construction, and materials designed to cope with moisture and changing weather. Indoor saunas are not made for these conditions and may warp, leak, or develop electrical issues if used outside.

Does an outdoor sauna need extra cover or shelter?

A built-in roof gives the sauna a basic level of protection, but extra shelter can help a lot. Positioning it beneath a canopy or in a more protected part of the garden can improve its resistance to the elements and support longer-lasting performance. Features such as a roof overhang or cover kit can also help reduce direct exposure to rain and lower maintenance over time.

What sort of base does an outdoor sauna need?

An outdoor sauna should be installed on a firm, level, and well-drained surface. Common options include a concrete base, paving slabs, decking, or compacted gravel supported by a solid frame. Uneven ground or direct placement on soil should be avoided, as this can lead to stability issues and may affect how the door and structure sit over time.

Does cold weather impact the performance of an outdoor sauna?

It can. In lower temperatures, especially under 5°C, the sauna may take longer to reach its full operating heat. That said, outdoor saunas are designed to be used all year round. Windy or exposed locations can make heating less efficient, so a more sheltered position is often the better choice for comfort and performance.

Is the electrical setup different for an outdoor sauna?

Yes, outdoor installations need to be handled differently from indoor ones. Cabling must be suitable for external use, and the setup should include RCD protection and weather-resistant electrical components. Installation should always be completed by a qualified electrician. The exact requirements will depend on the model, heater type, and power rating.

Do outdoor saunas still need ventilation?

Yes, proper airflow is still important. Leaving some space around the sauna helps moisture escape and allows the structure to dry naturally. Internal vents also help manage airflow during use and support drying after each session, which helps maintain the cabin in good condition.

How much upkeep does an outdoor sauna need?

Outdoor saunas benefit from occasional exterior treatment, such as a wood protector or sealant, to help defend against the weather. It is also worth keeping the surrounding area clear of leaves, debris, and pooled water. Inside the sauna, maintenance is usually simple and involves wiping benches, cleaning any glass, and leaving the door open after use so the cabin can dry out.

Can an outdoor sauna be installed on decking?

Yes, as long as the decking is strong enough, level, and allows good airflow underneath. Hardwood and composite decking are often suitable options. It is also important to make sure water drains away properly rather than collecting beneath the sauna.

Can rain damage an outdoor sauna?

Outdoor saunas are designed to cope with normal exposure to moisture, but constant heavy rain, poor drainage, or standing water can still shorten the life of the exterior over time. Keeping the wood protected and choosing a more sheltered position can make a big difference to long-term durability.

Can an outdoor sauna be placed inside a summerhouse or garden room?

Yes, that is a popular option for some customers. Installing an outdoor sauna inside a garden room or summerhouse can provide extra protection from the weather and may also help with heat-up times. The space still needs to be dry, well ventilated, and suitable for the model’s electrical setup.