• 4 Person Full Spectrum Infrared Indoor Sauna by Centuraheat
  • 4 Person Full Spectrum Infrared Indoor Sauna by Centuraheat
  • 4 Person Full Spectrum Infrared Indoor Sauna by Centuraheat
  • 4 Person Full Spectrum Infrared Indoor Sauna by Centuraheat
  • 4 Person Full Spectrum Infrared Indoor Sauna by Centuraheat
  • 4 Person Full Spectrum Infrared Indoor Sauna by Centuraheat
  • 4 Person Full Spectrum Infrared Indoor Sauna by Centuraheat
  • 4 Person Full Spectrum Infrared Indoor Sauna by Centuraheat
  • 4 Person Full Spectrum Infrared Indoor Sauna by Centuraheat
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By CenturaHeat

4 Person Full Spectrum Infrared Indoor Sauna by Centuraheat

SKU: HEAT-HS3003
£2,504.00 GBP £2,782.00
Tax included Shipping calculated at checkout.

Sauna Size: 1800mm (W) x 1200mm (D) x 2000mm (H)
Capacity: 4 Persons
Rated Power: 3400W
Heater: Full Spectrum + Carbon Fibre Infrared System

Electrical Information (Please Note): This sauna requires an electrician to hardwire it into the property’s mains.

🚚 Estimated Delivery: Tuesday, October 27 - Wednesday, November 11

Questions before ordering?
Speak to our UK-based sauna support team on 0333 038 2800.
We’re happy to help with sizing, delivery, or installation questions.

Ready to order? Delivery time is displayed above.

Rediscover relaxation at home with the CenturaHeat 4 Person Full Spectrum Infrared Indoor Sauna — a beautifully crafted cabin designed for comfort, recovery, and shared wellness. Built from durable Canadian Hemlock, it combines the deep muscle benefits of carbon-fibre infrared heat with the revitalising effects of full-spectrum light therapy for a complete home spa experience.

Full-Spectrum Heat for Complete Recovery

Powered by a 3400 W dual heating system, this sauna uses both carbon-fibre and full-spectrum infrared panels to deliver balanced, penetrating warmth. The heat works deeply to help relieve muscle tension, improve circulation, and support natural detoxification. Perfect for families or small groups, it offers professional-grade performance in an elegant, home-ready design.

Crafted for Comfort and Connection

Constructed from premium Canadian Hemlock, the cabin blends strength, natural beauty, and excellent heat retention. The smooth, aromatic wood creates a calm, restorative atmosphere, while the spacious four-person layout ensures plenty of room to stretch, relax, and recharge together.

Smart Controls and Personal Ambience

Adjust every detail of your session using the digital control panel or Wi-Fi mobile app. Set temperatures between 18°C and 65°C, customise the timer up to 99 minutes, and fine-tune the lighting to match your mood. Integrated Bluetooth, FM radio, and USB MP3 playback bring your favourite playlists to life through built-in speakers. Soft LED reading lights and optional coloured star lighting complete the soothing atmosphere, while the optional oxygen ioniser helps keep air fresh throughout.

Hardwired installation required: Designed for connection to your home’s mains supply by a qualified electrician.

KEY FEATURES

Full spectrum system: Carbon-fibre panels combined with full-spectrum infrared light

Spacious interior: Comfortable 4 person indoor layout

Premium build quality: Durable Canadian Hemlock construction

Smart controls: Digital panel with Wi-Fi mobile app connectivity

Adjustable temperature: Range from 18°C to 65°C

Flexible timer: Session length up to 99 minutes

Integrated audio: Bluetooth, FM radio, and USB MP3 playback

Ambient lighting: LED reading lights plus optional coloured star lighting

Fresh air option: Optional built-in oxygen ioniser

Home installation: Hardwired 230 V electrical connection

SPECIFICATION

Capacity: 4 person
Sauna Type: Indoor full spectrum infrared sauna
Heater Type: Carbon fibre and full spectrum infrared panels
Temperature Range: 18°C–65°C
Timer: Up to 99 minutes

Dimensions (W × D × H): 1800 mm × 1200 mm × 2000 mm
Material: Canadian Hemlock wood

Control Options: Digital control panel and Wi-Fi mobile app
Audio: Bluetooth, USB MP3, FM radio
Lighting: LED reading lights plus optional coloured star lighting
Air Quality: Optional oxygen ioniser

Rated Power: 3400 W
Voltage: 230 V
Current: 20 A
Connection: Hardwired installation required

Assembly: Flat-packed
Warranty: 1 year (electrical components), 2 years (wooden structure)

DELIVERY

Your sauna is delivered securely packaged to help ensure safe transport and straightforward handling on arrival.

Most saunas are delivered in multiple flat-packed boxes or a wooden crate, depending on the model. Delivery is kerbside only, meaning the driver will deliver to the nearest accessible point at your property but is not responsible for moving the goods inside.

This product is delivered on a 7.5 or 18 tonne vehicle. If access for a vehicle of this size may be restricted, please contact us in advance. Additional charges may apply if re-delivery is required using a smaller vehicle.

If you are unsure whether your postcode qualifies for free delivery, please use the delivery fee calculator in the shopping cart.

Sauna Type Weight No. of Boxes Dimensions
Infrared Light Sauna 300kg + 3-5 Flat packed
Traditional Steam Saunas 270kg + 4-7 Flat packed
Outdoor Saunas 300kg + 3-6 Flat packed
Wood Barrel Saunas 616kg + 1 Wood Crate
Corner Saunas 350kg + 3-7 Flat packed
Deluxe Relax Saunas 300kg + 3-7 Flat packed
Combination Saunas 300kg + 4-7 Flat packed

INSTRUCTIONS

This sauna is supplied flat-packed and is designed for home self-assembly. Full written instructions and a step-by-step guide are included to help make installation straightforward.

Position the sauna on a level, solid indoor surface with adequate surrounding clearance for ventilation and access. Ensure the room is dry and well ventilated.

This model must be hardwired by a qualified electrician to a suitable 230 V supply. Ensure all electrical work complies with current regulations.

Please note: any device above 3000W requires an electrician to connect it to the mains.

Before first use, wipe down interior surfaces and run the sauna briefly to allow the heaters to settle. Always follow the safety guidance provided in the manual regarding session length, hydration, and safe operation.

Frequently Asked Questions

Infrared Sauna FAQ

What is an infrared sauna and how does it work?

Infrared saunas use panels that warm your body directly instead of heating the air like a traditional steam sauna. The result is a deep, comfortable heat that feels gentle and is easy to stay in for longer sessions. Most people describe it as a smoother, more relaxing type of warmth.

How hot does an infrared sauna get?

Air temperatures are usually lower than a steam sauna, but the heat feels just as effective because it penetrates the body rather than surrounding you with high heat. Typical ranges vary by model, and most users preheat the cabin for around 10–20 minutes.

What are the benefits of using an infrared sauna?

Many people use infrared saunas to ease everyday muscle tension, support circulation, wind down after workouts, and improve general wellbeing. The gentle heat makes them easy to use regularly and suits people who prefer a less intense experience than a traditional sauna.

Do infrared saunas plug into a normal household socket?

Most smaller infrared saunas are designed for standard UK plugs, though larger multi-person or full-spectrum units may require a dedicated electrical circuit. Always check the power rating on the specific product page and follow the guidance of a qualified electrician if unsure.

How long should an infrared sauna session last?

New users often start with 10–15 minutes and gradually increase to 20–30 minutes. Many people use an infrared sauna three to five times a week. Listen to your body, stay hydrated, and step out if you feel light-headed or uncomfortable.

Are infrared saunas safe to use?

They’re widely used at home and in spas and are generally safe for most healthy adults. As with any heat therapy, hydration is important. If you’re pregnant, have a heart condition, or take specific medications, check with a healthcare professional before use.

What’s the difference between far infrared and full-spectrum infrared?

Far infrared provides deeper, gentler warmth, while full-spectrum models combine different wavelengths for a broader heat profile. Some users prefer the softer feel of far infrared; others like the more immediate warmth full-spectrum panels provide. Product pages list which heater type each model uses.

Do infrared saunas require much maintenance?

Very little. Wipe down surfaces after use, keep the glass clean, and let the cabin air out by leaving the door open for a few minutes. There are no stones to replace and no plumbing involved.

Can I assemble an infrared sauna myself?

Most infrared saunas arrive flat-packed and slot together using pre-fitted connectors. Two adults can usually assemble one in under 60–90 minutes. If the model requires a dedicated electrical connection, a qualified electrician should complete that part.

Is EMF something I should be concerned about?

Many infrared saunas are engineered with low-EMF technology. When low EMF is a feature of a particular model, it will be listed clearly on the product page so you can choose based on your preferences.