Hiki S Patio Sauna Thermo

Scandinavian wellness in any space

Price

£6,395 inc VAT & Delivery Included

Complete DIY Assembly Kit

Every Order Plants 5 Trees

Professional Installation

Comprehensive Warranty

Free UK Mainland Delivery

Choose your installation

Choose your timber colour

Thermo Spruce

Obsidian

Midnight

Silver

Arctic

Walnut

Crimson

Larch

Olive

Choose your roof shingles

Terracotta

Umber

Forest

Graphite

Onyx

Choose your sauna heater

Choose your roof insulation

Buy together
Patio Sauna Hiki S — 1–2 Person 40mm Thermowood Garden Sauna, Glass Door & Window Panel, 2.1m²
Integrated Bluetooth Speakers & Radio

Choose your add-ons

About

Small footprint, full sized warmth. The Hiki "S" packs proper Thermowood log construction into 2.1m², built for gardens, patios and balconies where space is tight but ambition is not. Two people fit comfortably around the heater, solid log walls hold the heat efficiently, and self assembly is manageable over a single weekend. A genuine entry point into regular sauna use, not a scaled down compromise.

Heat Treated Thermowood

Heat Treated Thermowood

Built for UK Weather

Built for UK Weather

Everything You Need to Install

Everything You Need to Install

Designed for Fast Heat-Up

Designed for Fast Heat-Up

Specification

  • Shape: Rectangular
  • Accommodates: 1-2 People
  • Footprint: 149 x 202 cm
  • Max Height: 216 cm
  • Floor Area: 2.1 m²
  • Wall Thickness: 40 mm
  • Material: Thermowood
  • Glass Door: 70 x 190 cm
  • Window: 70 x 190 cm
  • Assembly: Self-assembly
  • Insulated: No
  • Design Note: Glass door and window panel
  • Power Supply: Single or Three Phase
  • Heater Compatibility: Electric & Wood-Fired

Designed around your ritual

Full Glass Back Window

Full Glass Back Window

Bring the outdoors in. A full glass rear window fills the sauna with natural light and opens up wider scenic views.
Half Moon Back Window

Half Moon Back Window

Privacy meets natural light. A half-moon rear window creates a softer, brighter feel while keeping more enclosed wall space.
Full Glass Front Barrel

Full Glass Front Barrel

Turn every session outward. Full front glazing opens the barrel sauna to natural light and uninterrupted outdoor views.
Full Glass Front Cube

Full Glass Front Cube

Modern design, open views. Full-height front glazing creates a brighter, cleaner space with a sharper architectural finish.
LED Lighting Kits

LED Lighting Kits

Set the perfect mood. Integrated LED lighting creates warmth and atmosphere, transforming the sauna experience day or night
Bluetooth Speakers

Bluetooth Speakers

Soundtrack your downtime. Built-in Bluetooth speakers bring music, podcasts, and guided sessions straight into your sauna.
Quality Accessories

Quality Accessories

Complete the experience properly. Practical finishing touches that improve comfort, convenience, and the overall sauna ritual.
Premium Thermowood

Premium Thermowood

Built to age beautifully. Thermowood offers a richer finish, stronger durability, and better long-term performance.
A compact sauna that genuinely fits a tight UK garden, patio, or balcony removes a major practical barrier for households who'd otherwise assume sauna ownership requires significantly more space than they have available. The physiological benefits of regular heat exposure, improved circulation, reduced muscle tension, a cardiovascular effect comparable to light exercise, remain fully intact regardless of cabin size, so a well-built compact sauna delivers the same core wellness value as a larger model.

For first time owners specifically, starting with a manageable, accessible size like this often makes more practical sense than committing to a larger, more expensive sauna before knowing how genuinely the habit will stick. Thermowood's durability ensures the investment holds up well over time regardless of scale, giving confidence that a compact starting point isn't a compromise on longevity or build quality.

For individuals or couples in smaller properties, having genuine sauna access without needing a large garden supports building a consistent habit far more easily than if space constraints had ruled out ownership altogether. Research on habitual sauna users consistently shows that regular, frequent use drives most of the meaningful long-term cardiovascular and wellbeing benefits, and a sauna that actually fits the available space removes the single biggest obstacle to that consistency.
Delivered flat-packed for self-assembly, with free UK mainland delivery on qualifying orders. The larger Cube format requires a little more assembly time than the smaller Icon models, so we recommend allowing a weekend and having a second person to help. A solid, level base and suitable delivery access are required.

For a complete setup, select Professional Installation and choose your preferred date, allowing for the stated production lead time. We’ll then arrange the installation around your requirements, including any additional preparation or works needed to accommodate your sauna where possible.

Electric sauna heaters require a suitable dedicated electrical supply and are not simply plug-and-play. The power requirements depend on the heater's output and the electrical supply available at the property.

Smaller heaters may be suitable for a 230V single-phase supply, while larger or more powerful heaters can require a 400V three-phase supply. Single-phase power uses one electrical phase, whereas three-phase power distributes the load across three phases and is better suited to higher-powered equipment.

The correct supply will depend on the specific heater you choose, so the heater's electrical requirements should always be checked before installation.

Sauna heaters will normally need to be hard-wired into a correctly rated dedicated circuit with the appropriate cable, isolation and electrical protection. They should not be connected using a standard household plug or extension lead.

The final electrical connection should be completed by a suitably qualified electrician in accordance with the heater manufacturer's instructions and applicable electrical regulations. This is important for both safety and reliable operation of the heater.

If you're based in the Leicestershire area, we can arrange the electrical installation of your sauna heater for an additional fee. Please speak to our team if you'd like this included with your sauna.

Wood-fired sauna heaters do not require an electrical supply for heating, but they do require the correct installation of the stove, chimney, flue and surrounding heat protection.

The stove must be positioned according to the manufacturer's required safety distances from timber walls, benches and other combustible materials. Depending on the stove and sauna design, suitable heat shields or other non-combustible protection may also be required.

The floor beneath and immediately around the stove may also require suitable non-combustible protection, particularly where there is a risk of embers or hot material falling from the stove.

A suitable chimney and flue system must be installed to safely carry smoke and combustion gases outside the sauna. Where the flue passes through the roof, the correct insulated chimney components, roof flashing and heat-resistant protection should be used.

Correct ventilation is also important. A wood-fired stove requires an adequate supply of combustion air, while the sauna itself needs sufficient airflow to provide fresh air, circulate heat and allow moisture to escape.

When choosing the position of an outdoor wood-fired sauna, you should also consider where the chimney will discharge in relation to your house, neighbouring properties, windows, boundaries and outdoor seating areas.

Any applicable local requirements should be checked before installation, particularly where chimney positioning, smoke control or other restrictions may apply.

The Hiki S needs straightforward Thermowood sauna care, scaled to its compact size. After every session, leave the door open for twenty to thirty minutes to let the heat room dry out fully, preventing mould and dark staining on timber surfaces. Wipe down the interior once cooled, and give it a light sand once or twice a year wherever hands and bare skin make the most contact.

The glass door and window need only a standard glass cleaner and soft cloth. Leave the interior timber unsealed, allowing it to breathe and absorb moisture properly during sessions.

Thermowood's heat treatment gives it strong natural resistance to weathering, meaning less frequent exterior treatment is needed compared with standard untreated Spruce. An occasional check for surface wear is still worth doing, with a light oil treatment every couple of years if you want to maintain the original colour rather than letting it weather naturally to a silvery grey over time.
This sauna comes with a 5 year warranty for residential use and 2 years for commercial use, covering structural timber, glazing, and hardware. Valid claims are assessed case by case, and we'll supply replacement parts wherever possible rather than the whole sauna.
Production takes 7-10 weeks, plus 1-2 weeks dispatch time for pallet haulage. This sauna is delivered flat packed unless otherwise stated. Free UK mainland shipping applies to orders over £500 covering up to one double pallet (2.4m x 1.2m x 2.2m) or two single pallets (1.2m x 1.2m x 2.2m). If your order exceeds this due to length, weight, or quantity, additional pallet charges may apply and are quoted separately based on postcode. Please have a solid base, clear access, and suitable unloading space ready before delivery, with help on site if needed. Pallet deliveries are kerbside only, and you're responsible for moving goods onto your property.
Health Benefits
Assembly & Installation
Delivered flat-packed for self-assembly, with free UK mainland delivery on qualifying orders. The larger Cube format requires a little more assembly time than the smaller Icon models, so we recommend allowing a weekend and having a second person to help. A solid, level base and suitable delivery access are required.

For a complete setup, select Professional Installation and choose your preferred date, allowing for the stated production lead time. We’ll then arrange the installation around your requirements, including any additional preparation or works needed to accommodate your sauna where possible.
Electric Heater Setup

Electric sauna heaters require a suitable dedicated electrical supply and are not simply plug-and-play. The power requirements depend on the heater's output and the electrical supply available at the property.

Smaller heaters may be suitable for a 230V single-phase supply, while larger or more powerful heaters can require a 400V three-phase supply. Single-phase power uses one electrical phase, whereas three-phase power distributes the load across three phases and is better suited to higher-powered equipment.

The correct supply will depend on the specific heater you choose, so the heater's electrical requirements should always be checked before installation.

Sauna heaters will normally need to be hard-wired into a correctly rated dedicated circuit with the appropriate cable, isolation and electrical protection. They should not be connected using a standard household plug or extension lead.

The final electrical connection should be completed by a suitably qualified electrician in accordance with the heater manufacturer's instructions and applicable electrical regulations. This is important for both safety and reliable operation of the heater.

If you're based in the Leicestershire area, we can arrange the electrical installation of your sauna heater for an additional fee. Please speak to our team if you'd like this included with your sauna.

Wood-Fired Heater Setup

Wood-fired sauna heaters do not require an electrical supply for heating, but they do require the correct installation of the stove, chimney, flue and surrounding heat protection.

The stove must be positioned according to the manufacturer's required safety distances from timber walls, benches and other combustible materials. Depending on the stove and sauna design, suitable heat shields or other non-combustible protection may also be required.

The floor beneath and immediately around the stove may also require suitable non-combustible protection, particularly where there is a risk of embers or hot material falling from the stove.

A suitable chimney and flue system must be installed to safely carry smoke and combustion gases outside the sauna. Where the flue passes through the roof, the correct insulated chimney components, roof flashing and heat-resistant protection should be used.

Correct ventilation is also important. A wood-fired stove requires an adequate supply of combustion air, while the sauna itself needs sufficient airflow to provide fresh air, circulate heat and allow moisture to escape.

When choosing the position of an outdoor wood-fired sauna, you should also consider where the chimney will discharge in relation to your house, neighbouring properties, windows, boundaries and outdoor seating areas.

Any applicable local requirements should be checked before installation, particularly where chimney positioning, smoke control or other restrictions may apply.

Cleaning & Care
The Hiki S needs straightforward Thermowood sauna care, scaled to its compact size. After every session, leave the door open for twenty to thirty minutes to let the heat room dry out fully, preventing mould and dark staining on timber surfaces. Wipe down the interior once cooled, and give it a light sand once or twice a year wherever hands and bare skin make the most contact.

The glass door and window need only a standard glass cleaner and soft cloth. Leave the interior timber unsealed, allowing it to breathe and absorb moisture properly during sessions.

Thermowood's heat treatment gives it strong natural resistance to weathering, meaning less frequent exterior treatment is needed compared with standard untreated Spruce. An occasional check for surface wear is still worth doing, with a light oil treatment every couple of years if you want to maintain the original colour rather than letting it weather naturally to a silvery grey over time.
Warranty
This sauna comes with a 5 year warranty for residential use and 2 years for commercial use, covering structural timber, glazing, and hardware. Valid claims are assessed case by case, and we'll supply replacement parts wherever possible rather than the whole sauna.
Delivery
Production takes 7-10 weeks, plus 1-2 weeks dispatch time for pallet haulage. This sauna is delivered flat packed unless otherwise stated. Free UK mainland shipping applies to orders over £500 covering up to one double pallet (2.4m x 1.2m x 2.2m) or two single pallets (1.2m x 1.2m x 2.2m). If your order exceeds this due to length, weight, or quantity, additional pallet charges may apply and are quoted separately based on postcode. Please have a solid base, clear access, and suitable unloading space ready before delivery, with help on site if needed. Pallet deliveries are kerbside only, and you're responsible for moving goods onto your property.
Patio Sauna Hiki S — Compact Thermowood Log Sauna, Balcony-Friendly 2.1m² — thermowood — angle view 1

Genuine heat in a genuinely tight footprint

The Hiki "S" proves that a serious sauna does not need a serious footprint. At 2.1 square metres, it is one of the smallest log saunas in our range, built specifically for gardens, patios and balconies where space is the main constraint rather than ambition. The thermally modified wood used throughout gives it a head start over standard spruce builds, since the heat treatment process makes the timber naturally more stable and resistant to moisture, swelling and rot without any chemical treatment. This matters in a climate that brings real rain and real frost for a good part of the year.

Inside, the rectangular cabin is laid out efficiently so that two people can sit comfortably around a wood or electric heater without feeling cramped. The walls are built from solid log panels rather than thin cladding over a frame, giving better heat retention once warm and a sturdier structure that holds up over many seasons. Self assembly is straightforward, with numbered panels and clear instructions designed for an experienced DIYer working over a weekend.

For anyone weighing up whether a small garden still has room for a sauna, the Hiki "S" is usually the answer. It sits well against a fence line, in a corner plot, or alongside a hot tub as part of a wider wellness setup, keeping both price and planning sensible. It is a genuine entry point into regular sauna use, and many owners find a smaller sauna used often beats a larger one used rarely.
Patio Sauna Hiki S — Compact Thermowood Log Sauna, Balcony-Friendly 2.1m² — lifestyle photo 2
Patio Sauna Hiki S — Compact Thermowood Log Sauna, Balcony-Friendly 2.1m² — thermowood — front view 1
Patio Sauna Hiki S — Compact Thermowood Log Sauna, Balcony-Friendly 2.1m² — thermowood — side view 1
Patio Sauna Hiki S — Compact Thermowood Log Sauna, Balcony-Friendly 2.1m² — thermowood — side view 3
Patio Sauna Hiki S — Compact Thermowood Log Sauna, Balcony-Friendly 2.1m² — thermowood — back view 1
Patio Sauna Hiki S — Compact Thermowood Log Sauna, Balcony-Friendly 2.1m² — thermowood — side view 4
Patio Sauna Hiki S — Compact Thermowood Log Sauna, Balcony-Friendly 2.1m² — thermowood — side view 2
Patio Sauna Hiki S — Compact Thermowood Log Sauna, Balcony-Friendly 2.1m² — lifestyle photo 1

From Your Sketch
To Reality ✏️

A sauna built entirely around your space, your ideas and how you want it to feel.

Send us your hand-drawn sketches, and we’ll turn them into detailed CAD designs ready to bring your vision to life.

Chat With Us →
Bespoke wood-fired sauna and wellness space
Free Mainland UK Delivery Weather Resistant Thermowood Consistent Warmth Year Warranty Year-Round Use Heats Up Fast
Free Mainland UK Delivery Weather Resistant Thermowood Consistent Warmth Year Warranty Year-Round Use Heats Up Fast
Free Mainland UK Delivery Weather Resistant Thermowood Consistent Warmth Year Warranty Year-Round Use Heats Up Fast
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Built on Tradition. Perfected for Today.

Classic Scandinavian design, refined with premium materials, precise craftsmanship and enduring performance.

Designed to Heat Efficiently

Every curve has a purpose, helping your sauna reach temperature faster while delivering an even, enveloping warmth.

Crafted from Exceptional Thermowood

Heat-treated for durability and stability, our premium timber is chosen for its natural beauty and long-lasting performance.

Premium Tempered Safety Glass

Our premium tempered glazing delivers a refined finish, excellent durability and complete confidence in every sauna.

Frequently Asked Questions

5-Year Guarantee

5-Year Guarantee

Built for years of wellness and relaxation

Free UK Mainland Delivery

Free UK Mainland Delivery

Free delivery throughout England, Wales, and Scotland.

Expert Help, When You Need It

Expert Help, When You Need It

Friendly specialist support before and after your purchase.

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