CenturaHeat - 4 Person Steam Outdoor Garden Sauna

Spacious Garden Sauna for Family or Friends

Bring the full wellness experience to your garden with the CenturaHeat 4 Person Outdoor Sauna. Designed for larger households or shared relaxation, this outdoor steam sauna offers generous space, durable craftsmanship, and advanced features—all in a sleek natural wood finish perfect for UK gardens.

Built with high-grade Canadian Hemlock wood, this garden sauna combines strength, insulation, and aesthetic appeal. Its wide footprint (1800mm x 1800mm) ensures plenty of room to relax, whether you’re enjoying a solo sweat session or spending time with friends or family.

Steam, Sound, and Light—Customised Your Way

At the heart of this outdoor sauna is a powerful 8000W Harvia stove, delivering traditional steam heat and an authentic sauna experience. The LCD touch screen control panel lets you easily adjust temperatures from 18°C to 90°C.

Relaxation is elevated with chromotherapy lighting, a large square LED panel above and an LED strip behind the backrest, creating a calming atmosphere. Integrated Bluetooth speakers let you stream music or podcasts while you unwind.

With Wi-Fi-enabled app control, you can remotely preheat your sauna from inside your home—convenience built for UK weather.

Premium Accessories Included

This outdoor sauna comes fully equipped with essentials for a traditional experience:

• Wooden bucket and scoop

• Sand timer

• Thermo-hygrometer

• 20kg of Harvia lava stones

• Asphalt shingle roofing

Everything you need for a complete and authentic sauna session, straight out of the box.

• Crafted from durable Canadian Hemlock

• 4-person capacity for shared sessions

• 8000W Harvia stove with digital control

• MP3, Bluetooth, chromotherapy, and Wi-Fi remote access

• Designed for UK gardens and patios

Ideal for garden lovers, wellness seekers, and home spa enthusiasts, the Centuraheat 4 Person Outdoor Sauna offers the perfect blend of tradition and smart functionality.

• Wood: Canadian Hemlock

• Sauna Size: 1800mm (W) x 1800mm (D) x 2000mm (H)

• Roof Size: 2190mm x 2190mm

• Power: 8000W Harvia Stove

• Voltage/Amperage: 220-240V / 40A

• Control: LCD Touch Panel (18°C to 90°C)

• Lighting: Square chromotherapy light + LED strip + reading lights

• Audio: 2 built-in Bluetooth speakers

• Connectivity: MP3, Bluetooth, Mobile App (Wi-Fi)

• Accessories: Bucket & scoop, timer, thermo-hygrometer, lava stones, asphalt roof

• How much does it cost to run a sauna?

  The cost of running a sauna depends on its wattage and how long you use it. Our saunas typically range from 2kW to 10kW. On average, running a sauna for an hour can cost between £0.50 and £2.50. Please refer to this Electricity cost calculator for more information.

• What warranties do you carry on the saunas?

  Our warranty term is: 1 Year for electric parts, 2 Years for wooden parts.

• Are the Saunas easy to assembly/Install?

  All our saunas come with Assembly Instructions which are easy and detailed. Saunas are assembled together using buckles/clamps with some screwing involved.

  For Infrared Light saunas, the sauna can be plugged into any standard outlet in the house. For traditional steam saunas, the power needs to be connected to the mains of the house by an electrician.

• How hot does the sauna get and how hot does the steam get?

  For traditional steam saunas, the heat time and temperature can set by control panel is: 0-90mins and 18-99 degrees Celsius. For Infrared Saunas, the maximum temperature is 65 degrees Celsius.

• When is the right time to add water to the sauna stones?To ensure optimal performance and to avoid potential damage, only add water once the sauna stones have reached the appropriate temperature. This heat level is necessary to properly vaporize the water, creating the ideal steam environment.
• Why shouldn’t I add water before the stones are hot?Adding water to cold or warm stones can cause inefficient steam production, leading to a less satisfying sauna experience. In some cases, this may even damage the heating elements or stones, reducing the lifespan of your sauna heater.
• How can I tell if the stones are hot enough?The stones should feel intensely hot when you bring your hand near them (without touching!). Many sauna heaters also feature a temperature gauge to help you monitor the heat levels. Wait until the gauge reads at least 300°F before adding water.
• What type of water should I use?Use clean, distilled water when possible. Tap water with high mineral content may cause buildup on the stones and heater over time, affecting performance.

• Are there any precautions I need to take like anti-mould?

  If the sauna is placed in a very humid area, try to keep it dry. otherwise, no need do any precaution.

• What size cable does this need for its supply?

  For 3000W saunas, you would need at least 2.5mm size power input wire. For 4500W saunas, you would need at least 4mm power input wire.

• Would an RCD be needed for the steam sauna?

  Yes, a REC protection from the board would be needed. Please talk to your local electrician for details.

• Is it delivered assembled?

  No, the sauna is delivered dissembled and flat packed. Assembly is simple and easy with assemble videos or 3D manual.

• How long does it take to heat up once you turn it on?

  When the external environment temperature is 10 degrees Celsius, it takes about 15 minutes to heat up to 50 degrees Celsius, and about 30 minutes to heat up to 70 degrees Celsius.

• Does the timber from the outside get hot? Is it safe for children to touch this?

  The timber outside is not hot, just little warmer and safety for touch.

• Can the outside be painted or will this affect it in anyway?

  Yes, outside of sauna with wood nature colour paint.

• What type of wood is it made of?

  The wood is Canadian hemlock.

• Oxygen lonizer. What is this and what is the cost?

  This is negative ion generator, please email us for a price.

• Tourmaline stones, does the heater not come with stones? How much would this cost?

  This is not recommend for EU Countries, most popular for Korea and Japan.

• Mobile App system, how much would this cost?

  The control panel already includes this function.

• How much do the heater elements cost if they stop working?

  Please email for a price for the replacement.

Delivery Package: Most Saunas are packaged in 3 - 5 Flat packed Boxes or 1 Wooden Crate, please refer to packaging info table below.

This product is delivered to Curb-Side only.

The driver is not required to take the tank any further than this point. If you are unsure if your postcode constitutes for free delivery please revert to the delivery fee calculator on the shopping cart page.

HEAT-HS1014 Manual

Power Box Wiring

Stove Wiring

Technical Wiring Diagram

Top Board Wiring