Saunum AirCube Double Outdoor Sauna 5 Seater with Changing Room

The electrical supply required will depend on the kW rating of your chosen sauna heater. We strongly recommend consulting with a qualified electrician prior to any installation.

Typically, a dedicated supply is required—similar to those used for electric showers or cookers. Most domestic sauna heaters in the UK are connected to a single-phase 230V supply, and the Amps can be calculated using:

Watts ÷ Volts = Amps

For example: a 6kW (6000W) heater ÷ 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.

Saunum Air heater manual

Saunum Air Perfect heater manual

Saunum AirIQ control unit manual

Delivery pricing and regions

Delivery is included in the product price for Saunum saunas 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.

All Saunum products are made to order in Estonia, the home of the sauna. We deliver to your doorstep on a flatbed lorry, but unloading and positioning are the customer's responsibility to arrange — typically with a forklift, HIAB or crane, depending on site access. Please consult this installation guide.

If you'd rather not arrange this yourself, we're happy to organise it on your behalf. We'll get quotes from local lifting contractors in your area and handle the logistics for you, with a small fee added to cover the extra coordination.

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.

• Warranty Coverage: Product free from material and manufacturing defects.
• Validity: From the date of delivery.

Warranty Service:

• In case of defects due to material or assembly quality, we will recommend repair partners will repair or replace the device or its part.
• Labour and spare parts charges are waived.
• Saunum decides on component replacement or device exchange.
• Replaced components become Saunum's property.
• Consumers retain legal rights against the seller.

Warranty Conditions:

• Installation Report: Warranty valid with a completed installation report.
• Installation: Device must be installed by a qualified electrician per regulations.
• Private Sauna Use: Warranty for sauna climate device is 2 years.
• Public Sauna Use: Warranty for sauna climate device is 1 year.

Exclusions:

• Routine maintenance, cleaning, and wear and tear part replacement.
• Unauthorised device adaptations or modifications.
• Transport-related risks.
• Misuse, improper installation, or unauthorised repairs.
• Damage from accidents, lightning, water, fire, poor ventilation, etc.
• Faults from non-recommended stones and salt balls.
• Heaters and salt balls are not covered.

Warranty Claims:

• For warranty claims, please contact Heracles Wellness. We will guide you through the process and connect you with the necessary service technicians.

Important Notes:

• Sauna climate devices must be connected by a professional electrician.
• Read and keep the user manual for reference and maintenance guidance.

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.

Saunum AirCube Double Outdoor Sauna 5 Seater with Changing Room 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. Use sauna-rated stones only — 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.

Saunum model-specific care

For Saunum 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.