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Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness
Suncube S 2 Person Outdoor Sauna - Heracles Wellness

SunCube S 2-4 Person Outdoor Sauna

£17,999.00

★★★★★ 4.98 out of 5 · 116 reviews Read all

“After many weeks researching types of sauna and customer experience, I decided on the...”

Free Delivery to Mainland England & Wales

2 Year Warranty

Award Winning Patented Design

Delivered Fully Assembled

Premium Sustainably Sourced Materials

Handcrafted in Poland

Double Glazed Panoramic Windows

Environmentally Friendly

Call us on 0330 043 0870 for expert advice
When will I receive my order?
Estimated delivery: …
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No VAT or other hidden charges added at checkout.

Electrical Supply - IMPORTANT - Please Read Before Ordering

Electrical Installation – Important Information

If you hire our installation team to build your sauna, please note that internal electrical wiring is not included and must be completed by a certified electrician.

Our installation team will:

  • Mount the sauna heater to the wall (where applicable)
  • Attach the LED light strips to the benches

However, the following must be completed by a qualified electrician:

  • Final wiring and connection of the heater
  • Final wiring of the LED lighting
  • Installation and wiring of external control panels, door sensor, thermostat, and any other electrical components (not applicable for manually controlled heaters such as the Harvia Vega BC60).

Electrical Supply Requirements

A sauna heater typically requires a dedicated electrical supply, similar to those used for electric showers or cookers.

Most domestic sauna heaters in the UK operate on a single-phase 230V supply. The current draw can be calculated using the following formula:

Watts ÷ Volts = Amps

Example:

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

Below is a general guide for domestic sauna heaters:

Heater Power - Current Draw - Suggested Cable Size (Single-Phase)

2.3 kW - 10 Amps - 1.5 mm²

3.0 kW - 13 Amps - 2.5 mm²

3.6 kW - 15 Amps - 2.5 mm²

4.5 kW - 19 Amps - 2.5–4.0 mm²

6.0 kW - 26 Amps - 4.0 mm²

8.0 kW - 35 Amps - 6.0 mm²

9.0 kW - 40 Amps - 6.0 mm² (or higher, depending on cable run)
Cable size depends on cable length, installation method, and other on-site factors. Always defer to your electrician’s judgment.

We strongly advise that installation is carried out by a fully qualified electrician, and that all work complies with current Government regulations and wiring standards (e.g., BS 7671 in the UK).

Sauna Heater Manuals

For exact electrical requirements of each heater please refer to the installation manuals below. If you provide these to your electrician, they should be able to advise you of the necessary wiring.

Harvia The Wall SW60 heater manual

HUUM DROP heater manual

HUUM UKU control panel manual

Harvia The Wall wiring diagram

How to wire a HUUM heater on a single-phase supply

Delivery & Installation

Delivery pricing and regions

Delivery is included in the product price for eligible sauna orders to mainland England and Wales, excluding the Isle of Wight and Isles of Scilly.

Mainland Scotland delivery supplements of £399 or £749 including VAT apply by postcode and are shown at checkout.

Northern Ireland, the Republic of Ireland, Scottish islands, BFPO, Europe and every other international or offshore destination require an individual quotation before ordering.

Eligible Scottish customers can select free collection from our private Widnes warehouse. Collection is by appointment and may be made personally or by a nominated carrier.

Suncube saunas are delivered fully assembled.

unloading is not as every site is different. You will need either a fork lift, HIAB or crane to get your sauna into position.

To protect the sauna’s base frame, it is recommended to install the sauna above ground level. Place a water-resistant material, such as bitumen strips, between the base frame and the surface to prevent direct contact with the ground.

Assembled Deliveries

Assembled saunas cannot be offloaded by hand. Depending on access, you have three options: forklift, HIAB, or crane.

• Forklift: If there is enough space to move the sauna from the truck to its final position, a forklift is the most cost-effective option.

• HIAB: For lifting the sauna over a fence or wall near the road, a HIAB is a practical and affordable choice.

• Crane: If your sauna’s final position is far from the road and lacks forklift access, a crane will be necessary.

If you’re unsure of the best solution, feel free to contact us for advice or assistance in finding the right option. We can also book it on your behalf for an extra fee.

Warranty

The Suncube S Sauna comes with a 2-year manufacturer’s warranty, ensuring peace of mind and long-lasting quality. This warranty covers defects in materials and workmanship under normal residential use, starting from the date of delivery.

Covered under the warranty are the structural CLT (Cross Laminated Timber) panels, benches and seating, as well as all factory-installed systems and components. This includes the heater and lighting components.

Please note, the warranty does not cover issues arising from improper installation, normal wear and tear (such as minor wood warping or discolouration), neglect, misuse, poor maintenance, or damage caused by environmental factors like storms or excessive snow. It also excludes unauthorised modifications or the addition of third-party products after delivery.

Should a fault occur, all warranty claims must be submitted directly to Heracles Wellness within 30 days of the issue being discovered. Claims must include a detailed description and clear photographs of the defect. Any repair work must be carried out either by Suncibeor an authorised service partner unless agreed otherwise in writing.

For the first 12 months following delivery, all repair, replacement, shipping, and labour costs are fully covered. From months 13 to 24, replacement parts are provided free of charge; however, shipping and labour costs may apply.

This warranty is non-transferable and applies only to the original purchaser at the original installation address. Suncubes' liability under this warranty is limited to the original purchase price of the sauna and does not extend to any indirect or consequential damages.

Return and Refunds

Made to order. This product is built to your specification, so we cannot accept returns or cancellations for a change of mind once production has started. Your legal rights are not affected: if it is faulty, damaged or not as described, we will repair, replace or refund it, and it is covered by its warranty. Please check size, access, base and electrical requirements before ordering; we are happy to help. Full terms: Returns policy.

Maintenance

SunCube S 2-4 Person Outdoor Sauna is designed for outdoor use, but it is not maintenance-free. A small amount of regular care will help protect the timber, keep the sauna clean, and prevent avoidable issues over time.

After each use

• Wipe down wet benches, backrests, floors and high-contact areas.

• Leave the door and vents open until the interior has dried properly.

• Do not leave wet towels or accessories inside the sauna.

Cleaning

• Clean periodically with warm water, a soft cloth or brush, and a mild sauna-safe cleaner.

• Avoid harsh household chemicals, bleach, ammonia, abrasive cleaners, or normal interior varnishes.

Benches and backrests

• Sit on towels during use to reduce sweat staining.

• If bench timber becomes dry or marked, it can be lightly cleaned, gently sanded if needed, and treated with a sauna-suitable bench protection product where appropriate.

Doors, hinges and timber movement

• Outdoor timber naturally expands and contracts with heat, humidity and weather.

• Minor door or hinge adjustments may occasionally be required. This is normal routine maintenance rather than a product fault.

Heater stones

• Inspect sauna stones regularly, especially with frequent use.

• Replace stones if they become cracked, crumbly, heavily discoloured, or start breaking down.

• Stack stones loosely enough to allow airflow around the heating elements. Only use proper sauna stones, not garden or beach stones.

Exterior, roof and exposed locations

• Check the exterior, roof, fixings, hinges, vents and drainage periodically, especially after storms or long wet periods.

• Coastal, shaded, very exposed, or high-rainfall locations may need more frequent maintenance.

• In coastal or sea-air locations, exposed metal parts such as hinges, fixings and brackets should be checked more often and given extra corrosion protection where appropriate, such as WD-40 or a suitable zinc-based protective spray.

• In windy or exposed locations, check that any parts vulnerable to wind lift or movement are properly secured. This can include roof shingles, trims, covers and lightweight external fittings. If needed, use additional suitable fixings, adhesive, or restraints in line with the manufacturer’s guidance.

Manuals

• Always follow the specific manual supplied with your sauna and heater. If the manual gives different maintenance instructions, the manufacturer’s manual should take priority.

SunCube model-specific care

For SunCube saunas, follow the supplied manufacturer manual for exact timber treatment, cleaning, heater and roof-care requirements.

• If the sauna has factory-finished or specialised cladding, do not apply ordinary paint, varnish, or household wood products unless the manufacturer confirms they are suitable.

SunCube S 2-4 Person Outdoor Sauna

£17,999.00

The SunCube S is a 2-4 person outdoor sauna from the EU with a patented rounded-square shape, a Thermory Pine exterior, a Thermory Aspen interior and a full-width panoramic glass front. It measures 2.29m wide, 1.75m deep and 2.40m high, comes with a Harvia The Wall heater (or a HUUM DROP with WiFi) and arrives fully assembled, with delivery to mainland England and Wales included.

SunCube S

Your daily retreat for two

A compact sauna with a full glass front, built from Thermory wood: Aspen inside, Pine outside, with stainless steel details. Three sit in comfort on the two-tier bench, four at a squeeze, and one can lie full length.

  • Seats 2–4
  • Footprint 2.29 × 1.75m
  • Harvia The Wall heater included
  • Delivered fully assembled
2–4People
4.0m²Footprint
6.3m³Sauna room
SunCube S with a weathered grey exterior on a stone patio beside a daybed
A couple in bathrobes on the Thermory Aspen bench of a SunCube sauna
The cabin

Made for small gardens and patios

The S takes little space but gives you a proper sauna: dry heat to relax the body and clear the mind, with the garden in view through the panoramic front.

  • Two-tier bench

    A top bench running the full width of the room, about 2 m long, with a lower tier in front.

  • Full glass front

    The whole front is glass, with the door set into it.

  • Thermory Aspen inside

    Hand-selected, sustainably sourced thermo wood: smooth, warp-resistant, holds the heat and gives a soft wood aroma.

  • Compact footprint

    1.75m deep, so it fits most patios and gardens.

Look inside

Smooth wood, warm light

Thermo Aspen benches, LED lighting and a numbered SunCube plate on every cabin.

Folded towels on a Thermo Aspen sauna bench
Thermo Aspen benches
Numbered SunCube Spa plate
Every SunCube is numbered
Heater

Heaters for the SunCube S

Pick your heater in the options above.

Harvia The Wall 6 kW (included)

A slim, wall-mounted black steel heater, controlled manually on the heater.

HUUM DROP 6 kW with UKU WiFi (upgrade)

HUUM's Red Dot award-winning drop-shaped heater. Switch the sauna on from anywhere with the HUUM app.

Plug and play

Pre-wired at the factory: your electrician connects it to a 230V or 400V supply.

Make it yours

Options for the SunCube S

Choose these in the options above.

  • Exterior colour

    Thermo wood in Natural, Grey or Black. It ages beautifully and is built to last.

  • Glass colour

    Transparent, or Bronze or Black if you want more privacy.

  • Wood treatment

    Extra protective treatment inside (walls and benches) and outside, to extend the life of the wood.

  • Bucket and ladle

    Our Heracles Wellness bucket and ladle, for pouring water on the stones.

Brushed steel SunCube signature on the timber front of the sauna
Why SunCube

Built to last

Patented shape

The rounded-square shape is protected across Europe (EUIPO design 009149214-0001). It spreads the heat evenly, so the room reaches temperature faster and holds it.

Thermory wood

Thermally modified Thermory wood: Thermory Pine outside (20 mm, on a ventilated cladding so air flows behind it) and Thermory Aspen inside. Durable, weather-resistant and resistant to warping.

Certified frame

A rigid, ventilated frame of certified KVH / BSH timber, with reinforced stainless steel parts that won't corrode.

Panoramic glass

Heat-resistant toughened panoramic glass (8 mm, triple-layer according to SunCube) that keeps the heat in and the view open.

LED lighting

Soft LED light inside for evening sessions.

Delivered assembled

Every SunCube leaves the factory in one piece, pre-wired and ready for your electrician to connect.

Technical details

Full specifications

Sauna cabin

Bench layoutStraight, two-tier
Top benchAbout 2,040 × 600 mm
Seats comfortably3
Maximum seated2–4
Lie-down capacity1 adult
ShapeRounded square (patented)
Outer size (W × D × H)2,290 × 1,750 × 2,400 mm
Inside floorAbout 2,040 × 1,540 mm
Sauna room volume6.3 m³
WeightUp to 850 kg

Build and supply

ExteriorThermory Pine, ventilated cladding
Interior and benchesThermory Aspen
FrameCertified KVH / BSH timber, stainless steel details
GlassPanoramic toughened glass front with door
HeaterHarvia The Wall 6 kW, or HUUM DROP 6 kW with UKU WiFi
Power supply230V or 400V, depending on the heater
Exterior colourNatural, Grey or Black
Glass colourTransparent, Bronze or Black
IncludedBenches, LED lighting, steel exterior rings, manual and hardware
Warranty2 years
DeliveryFully assembled
Space and seating

Space and seating: the practical stuff

Drawn to scale from SunCube's plans, seen from above. The figures are an average UK man: 1.74 m tall, 47 cm across the shoulders.

Sitting: 3 in comfort, 4 at a squeeze

Heater2.04 m inside1.54 m insideGlass front and door
Three across the 2.04 m top bench with about 68 cm each. At a squeeze, four fit shoulder to shoulder (an average man is 47 cm across): fine for friends and family.

Lying: 1 adult full length

Heater2.04 m inside1.54 m insideGlass front and door
The top bench is 2.04 m long and 60 cm deep, so one adult can stretch right out. Even a 1.86 m man (taller than 95% of UK men) has about 16 cm to spare.

SunCube gives the outside size and room volume but no inside or bench measurements, so the room and bench sizes here are measured off SunCube's to-scale layout drawing and may be a few centimetres out.

2.04 × 1.54 mInside floor
2.04 m × 60 cmLongest bench
2.00 mInside height
Sauna2.29 × 1.75 m50 cm50 cm50 cm90 cmdoor opens outAbout 3.3 mAbout 3.1 m
Outside footprint

Plan for about 3.3 × 3.1 m of garden

The sauna itself is 2.29 m wide, 1.75 m deep and 2.40 m high. Leave a gap around it so you can look after it:

  • Behind and each side: about 50 cmEnough to stand in, so you can re-coat the outside (we suggest once a year) and reach the isolator and control box.
  • Against a wall or fence?That's fine. You just won't be able to paint that side, and it will be sheltered from the weather anyway. Ask your electrician to put the isolator on a side you can reach.
  • In front: about 90 cmThe glass door opens outward, and you want a clear, safe step in and out.
  • BaseLevel, and strong enough for about 1.3 tonnes: the sauna (850 kg), the heater and stones and up to 320 kg of people.

Tight corner or close to a fence? Call us on 0330 043 0870 with a photo of the spot and we'll tell you if it works.

Cabin sizes from SunCube's plans. Body sizes from UK adult data (Pheasant, Bodyspace). Heater position approximate.

Delivery

Delivered in one piece

The SunCube S arrives fully assembled from the factory in the EU.

Delivery included

Free to mainland England and Wales (not the Isle of Wight or Isles of Scilly). Mainland Scotland supplements are shown at checkout; elsewhere, ask us for a quote.

Forklift, HIAB or crane

An assembled sauna can't be unloaded by hand. A forklift is cheapest where there's room to drive it to the spot, a HIAB lifts it over a fence or wall near the road, and a crane reaches places far from the road. We can advise, or book it for you for an extra fee.

Base

Set it on a flat, level, compacted base, raised off the ground, with a water-resistant layer such as bitumen strips under the frame.

Electrics

The sauna arrives pre-wired. A qualified electrician makes the final connection on 230V or 400V, depending on the heater.

About SunCube

Designed in Poland, built in the EU

SunCube is a European wellness brand founded in 2021 and based in Poland. Its outdoor saunas are built in the EU from thermo-treated wood and premium materials, made to stay outside all year. In the UK, SunCube is available only through Heracles Wellness.

SunCube S

Order your SunCube S for £17,999

Harvia The Wall heater included. Delivered fully assembled, with delivery to mainland England and Wales included.

Order your SunCube SCall 0330 043 0870

SunCube S 2-4 Person Outdoor Sauna - FAQ's

When will I receive my order?

The estimated delivery window is currently ….

This is an estimate rather than a guaranteed delivery date. The timing can vary depending on production schedules, dispatch arrangements or other unforeseen delays. If you need the product by a particular date, please call us before placing your order so we can check the current schedule with you.

Does this sauna include a heater?

Yes. The price includes a Harvia The Wall 6 kW electric heater. You can upgrade to a HUUM DROP 6 kW with UKU Wi-Fi control in "Design your sauna".

Final wiring must be completed by a qualified electrician; electrical connection is not included with sauna assembly.

How many people can the Suncube S sauna fit?

The sauna is designed for comfortable use by up to four adults at one time.

Is this sauna weatherproof for outdoor use?

Yes, the Suncube S is constructed with weather-resistant materials suitable for outdoor environments year-round.

How long does it take to assemble?

The Suncube S arrives fully assembled

What type of heating system is included?

The Suncube S is available with the choice of Harvia the Wall 6kW or HUUM Drop 6kW with WiFi heaters

Are sauna benches included with purchase?

Yes, comfortable and ergonomic wooden benches are included for your relaxation.

Can the sauna be placed on a patio or deck?

Absolutely—the compact design fits most outdoor spaces including patios and decks.

Does it come with a warranty?

Yes, your purchase includes a two year manufacturer warranty. Please contact us for specific coverage details.

Does installation include the electrical connection?

No. Our installation team can assemble the sauna, but the heater and any other electrical components must still be connected by a qualified electrician.

You will need a suitable electrical supply and, at minimum, an isolator switch. Full details are provided in the Electrical Supply section on the product page.

Can any qualified electrician connect the sauna, and do you provide guidance?

Yes. Any qualified electrician should be able to connect the sauna, provided they follow the electrical requirements listed in the Electrical Supply section of the product page.

After you place your order, we also send further information that you can pass on to your electrician.

Can you recommend an electrician for the final connection?

In some cases, we may be able to share details of electricians who have connected saunas for previous customers.

Availability will depend on your location, and you are also welcome to use your own qualified electrician.

How long does professional assembly take?

Assembly time depends on the model, access and site conditions. Many outdoor saunas can be assembled in around one day, while larger or more complex models may take longer.

Use the Request an Installation Quote link under Add to Cart and complete the form. We will confirm the expected installation time with your quote.

Is the Heracles installation team experienced with this model?

Yes. Our installation team uses specialist carpenters and installers who are experienced in assembling outdoor saunas, which is one of the reasons many customers prefer professional installation.

What sort of base does the sauna need?

Outdoor saunas should be installed on a solid, level, well-drained base that is suitable for the size and weight of the model you are buying.

Suitable options can include a concrete pad, paving, tiles, or structurally suitable decking, provided the surface is flat, stable, and able to support the load without movement.

We also recommend positioning the base far enough away from walls, fences, and other obstructions to allow access for future wood treatment and maintenance, and to ensure the fuse box can still be accessed when needed.

Do you carry out site visits before installation?

No. We do not carry out site visits.

To request an installation quote, use the Request an Installation Quote link under Add to Cart and complete the form with photos, measurements, site plans, access details and the proposed sauna location. Our installation team will use that information to assess access, base preparation and positioning, and flag any obvious issues before installation.

Why has my sauna door gone out of alignment over time?

In outdoor saunas, it is normal for the timber structure to respond to changes in temperature, humidity, and ambient conditions over time. This can occasionally cause minor movement in the door opening, which may affect how the door closes or sits within the frame.

For this reason, sauna door hinges are designed to be adjustable. Minor door or hinge alignment adjustments over time are normal and should be carried out in line with the manual as part of routine ownership maintenance, rather than being treated as a product fault.

Can I see one of your saunas in person before ordering?

We do not currently have a full showroom, but many of our existing customers are happy to show their sauna to prospective buyers.

If you would like to see one in person, please contact us and we can try to arrange a viewing with a customer in or near your area.

Do outdoor saunas need regular maintenance?

Yes. Outdoor saunas are not maintenance-free.

As a minimum, owners should expect to inspect and re-treat exposed timber at least every 12 months, or sooner if the manufacturer manual and local conditions require it.

You should also expect to make minor door or hinge adjustments over time in line with the manual, as timber structures naturally move slightly with changes in temperature and humidity.

In coastal or sea-air environments, exposed metal parts should be checked more regularly and protected with a rust-proof treatment such as WD-40 or another suitable anti-corrosion product.

Sauna heaters also require maintenance in line with the manufacturer manual. This normally includes periodically checking, washing, and restacking the stones, and in the longer term electric heater elements may need replacing if they wear out.

We do not currently offer a formal maintenance programme.

What paint or treatment should I use on my outdoor sauna?

If your sauna has exposed or untreated exterior timber, use a breathable, UV-resistant and water-resistant exterior wood treatment. We recommend Tikkurila Valtti Plus Kesto or Tikkurila Valtti Plus Color. If you prefer a clear, natural finish, Osmo UV Protection Oil is a good option.

Apply the treatment after assembly and before regular use, then inspect the timber annually and re-treat it as required for the product and your site’s exposure.

For sauna-room walls, window frames and door frames, use Tikkurila Supi Sauna Finish or Tikkurila Supi Sauna Wax. For benches and backrests, use Tikkurila Supi Laudesuoja Bench Protection. Never use ordinary exterior paint, varnish or household wood treatments inside the heated sauna room.

If your sauna has factory-finished or specialist cladding, follow the supplied manual and do not overcoat it unless the manufacturer confirms the product is suitable.

These recommendations are general guidance. Check both the sauna manufacturer’s manual and the treatment manufacturer’s instructions, and satisfy yourself that the product is suitable for the timber and any existing finish before applying it. If you are unsure about a colour, request samples from the manufacturer or retailer and test one on a spare timber offcut or a small, inconspicuous area first.

How much treatment should I buy for the SunCube S?

Buy no paint or timber treatment before first use of the SunCube S. It is supplied with factory-finished or specialist surfaces that should not be overcoated with a generic product.

obtain the matching SunCube coating for future maintenance.

When maintenance is due, follow the supplied manual and obtain the exact compatible finish from the sauna manufacturer or Heracles before buying it.

Can this sauna be used commercially?

Yes. Our traditional saunas are suitable for commercial use, and we already supply many commercial customers.

Commercial use requires a regular maintenance regime, as it would with any sauna. This includes cleaning the sauna, inspecting and maintaining the heater stones, and re-treating or painting the timber when required. The frequency will depend on usage, location and the manufacturer's maintenance instructions.
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