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Manufacturer's Warranty Included

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Thermowood exterior

Two year warranty

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As low as:

£5,999.00
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Free UK Delivery

Expected Delivery: 6-8 weeks

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2-Year Warranty

simple, safe delivery

natural thermowood

Enjoy a 15-20 year lifespan with our thermally treated, highly durable thermowood sauna

glass doors

Experience full scenic views with this sauna due to it's full scale reinforced glass panels & door

hand crafted

All saunas are hand-made by our experienced craftsman and innovative machinery

quick installtion

Our smart self-build designs allow for same day installation 

(we recommend hiring a professional)

NATURAL THERMOWOOD

Our thermowood exterior allows you to enjoy 15-20 years of pure relaxation without regular treatment

GLASS DOORS

Experience full scenic views with this sauna due to it's full scale reinforced glass panels & door

HAND CRAFTED

All saunas are hand-made by our experienced craftsman and innovative machinery

Quick installation

Our smart self-build designs allow for same day installation 

(professional recommended)

Our HELKA Extra Large Sauna

The HELKA is a stylish garden sauna designed for comfort, quality, and easy installation. Its clever design provides a relaxing experience for up to six people, making it perfect for families or small groups.

 

You don’t need any major groundwork to install it — just place it in your garden and enjoy. The easy self-assembly process, supported by clear instructions, allows you to set it up quickly and start relaxing in no time.

 

Its modern cube shape and thermowood construction make it both durable and visually elegant, while the thermo-pine benches provide lasting comfort and style. The sauna is compatible with several heaters creating a warm cosy space.

 

Thermal Pine is heat-treated to enhance its strength and weather resistance, making it ideal for outdoor saunas. This process removes most of the resin, preventing sap leakage even at high temperatures, and greatly increases stability — reducing the risk of warping or deformation caused by moisture.

Sauna Highlights

Scandinavian Style

Weather Resistant

42mm Thick Thermowood Exterior

Compact Size

Self Build (professional recommended)

Temparature Controls

Energy Efficient Design

Harvia Vega BC90 9kw Heater (Includes Controls & Stones)

The Harvia Vega BC90 is a compact and efficient 9 kW electric sauna heater, suitable for saunas with a volume of 6–9 m³. Featuring a sleek stainless steel design, it delivers reliable and consistent heating performance. Heats most saunas quickly and ensure even heat distribution.

Harvia Spirit SP90XW 9kw WiFi Black (Includes Controls & Stones)

Designed and manufactured in Finland, the high-quality design heater is a Harvia masterpiece, combingin an excellent sauna experience with safety and reliability. Equipped with WiFi, the heater is easy to use and the MyHarvia mobile application gives the best and most versatily user experience.

Key Benefits & Extra Details

9 kw output

Compact, wall-mounted design 

Stainless steel construction

Integrated controls 

Stone capacity of approx. 20 kg

Simple installation

Safety features

Key Benefits & Extra Details

● 9 kw output

Stylish and curved design

Stainless steel construction

Visible stones

Equipped with wifi control panel

Simple installation

Safety features

Technical Info

Specification Sheet
Parameter Details
External Dimensions Width: 2100 mm, Height: 2100 mm, Depth: 220 mm
Walls 28 mm / 42 mm thickness
Cubic Volume 4.7 m³
Door Dimensions 169 × 59 cm
Benches Thermal Pine
Number of People 4-6 people
Room 1
Packaging 1 pallet (225 × 120 × 85 cm, weight ~600 kg)
Heater Compatibility Various models of wall-mounted heaters with thermal protection

Delivery & Installation

Delivery

We offer Standard Curbside Delivery & Priority+ Curbside Delivery with Full Insurance Protection. All saunas are made to order, taking 6-8 weeks to manufacturer. After this, expect delivery to tak 6-8 working days.

 

Unloading Information

Our delivery team will provide curbside delivery using a tail lift. Placement of the sauna on your driveway is subject to ground conditions and at the sole discretion of the driver.

 

Installation & Base

We advise you to have a base installed by a professional or follow our guide to do it yourself. A base is required due to the weight of the sauna and avoids your sauna from sinking over time.

 

Self-assembly instructions will be provided; however, we highly recommend you hire a professional carpenter and/ or builder for your sauna build.

Warranty

At SaunaSupply, we stand behind the quality of our products. That’s why we offer a 2-year warranty on all SaunaSupply saunas. Full warranty details can be found in the product manuals, but the key terms are outlined below:

 

Different warranty periods may apply to saunas mounted on trailers and products used in commercial settings.

 

The warranty does not cover natural characteristics of wood, such as:

- Discolouration

- Cracking

- Dimensional changes caused by fluctuating or high humidity.

- Normal wear and tear from regular use is not covered.

- Improper installation, misuse, or user-caused damage are excluded from coverage.

- Weather-related damage, including lightning or storm damage, is not covered.

- Installation errors by the customer will invalidate the warranty.

- Any unauthorised repairs or modifications will void the warranty.

- Incorrect storage or exposure to unsuitable environmental conditions will also void the warranty.

 

Conditions and Exclusions

The warranty is void if the sauna is not assembled by a qualified professional.

 

Making a Warranty Claim

To activate warranty support, any faults or defects must be reported within 48 hours of discovery.

Please contact us at info@saunasupply.co.uk for all warranty-related queries or to submit a claim.

Electrical Supply

The electrical supply you need depends on the kW rating of your sauna heater. We strongly recommend speaking with a qualified electrician before starting any installation.

Most home saunas in the UK use a dedicated power supply, similar to what’s used for an electric shower or cooker. Domestic sauna heaters typically run on a single-phase 230V supply.

To work out the electrical current (Amps), use this formula:

Watts ÷ Volts = Amps

Example:
6kW (6000W) ÷ 230V = approximately 26 Amps


Typical Guide for Domestic Sauna Heaters

Heater Power Current Draw Suggested Cable Size (Single-Phase)
2.3 kW10 Amps1.5 mm²
3.0 kW13 Amps2.5 mm²
3.6 kW15 Amps2.5 mm²
4.5 kW19 Amps2.5–4.0 mm²
6.0 kW26 Amps4.0 mm²
8.0 kW35 Amps6.0 mm²
9.0 kW40 Amps6.0 mm² (or larger, depending on distance)

Important Notes

  • Cable size depends on cable length, installation method, and other on-site factors.
  • Always follow the advice of a qualified electrician.
  • All installations must comply with current UK wiring standards (BS 7671).

Need help? 
Contact our team today.

Your can use our live chat to speak with a team member now.

 

Or email us at:

If you need immediate help, please use our live chat option in the bottom right corner and a member of our team will be glad to help or call us.

Q. Can I assemble the sauna myself?

Technically, yes — you can assemble the sauna yourself. However, we strongly recommend having a qualified carpenter or joiner assist you, especially if you don’t have prior experience with woodwork or construction.

 

The assembly manual is comprehensive and user-friendly for those familiar with building, but without that background, the process can be challenging and time-consuming. Most customers choose professional installation for peace of mind and to ensure the sauna is assembled correctly.

 

Important: Incorrect assembly or not following the manual may void your warranty. If you’re unsure, we recommend professional installation.

Q. What type of base do I need?

Your sauna base must meet two key requirements:

 

It must be completely level.

It must support the full weight of the sauna and users.

 

Most saunas bases must be able to withstand twice the weight og the sauna itself. For example, when laying a base for saunas weighing above 400 kg, plan for an additional 400 kg for occupants — a total of around 1,000 kg+. Suitable base materials include concrete, patio decking, tiles, or asphalt — as long as the surface is flat and stable.

 

Check out our guide on different sauna bases here and we strongly advise you to hire a professional.

 

Avoid installing the sauna on a slope or in an area prone to water pooling.

Q. What maintenance is required after assembly?

After assembly, the sauna should be treated both inside and out as soon as possible. This protects the wood and is required to validate your warranty.

 

Painting the sauna bench is optional but recommended. Use a breathable, oil-based treatment such as Tikkurila Supi Sauna Finish.


If Tikkurila products are unavailable, Osmo Oil is an excellent alternative. Both can be ordered from B&Q.

Q. What are the running costs?

A traditional home sauna usually uses a 3 to 9 kW electric heater and costs around £0.10 to £0.30 per kWh in the UK. This means running costs range from about £0.30 per hour for a 3 kW heater to £0.90 per hour for a 9 kW heater. Preheating typically takes 30 to 45 minutes, which adds to the overall cost depending on how often and how long the sauna is used.

 

Infrared saunas are highly energy-efficient. On average, running a SaunaSupply sauna costs between £0.08 to £0.40 per hour, depending on the model size, local electricity rates, and how often it's used. For example, a standard 2-person sauna using a 1.5–2.0 kW heater may cost around £2 to £4 per month if used 3–4 times per week. This makes it a very economical option for regular at-home wellness.

Q. What maintenance is required if I buy a pre-assembled sauna?

None. Pre-assembled saunas are fully treated at the factory before shipping.

Q. Can I paint the sauna a different colour?

Yes. You can paint your sauna any colour, as long as you use a breathable wood treatment.

Q. Do I need a three-phase power supply?

No, a three-phase supply is not required.


However, a qualified electrician must connect your heater to your power supply, and an isolator switch is required at minimum.

Discover Our Range

All our saunas are handcrafted in Estonia so you'll receive the best craftsmanship possible. Enjoy home wellness today.

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