CenturaHeat 4 Person Combination Bio Indoor Sauna - 6100W

Enjoy the best of both worlds with the 4 Person Combination Bio Indoor Sauna – a versatile design that blends the tradition of steam with the modern benefits of infrared therapy. Crafted from premium Canadian Hemlock and built to seat four users comfortably, this dual-function sauna allows you to choose, or combine, classic stove heat with the deep-penetrating warmth of infrared carbon fibre panels. Perfect for quick revitalising sessions or long, indulgent detox rituals, it delivers a complete wellness solution at home.

Dual Heating, Maximum Flexibility
With up to 6100W of combined power, the hybrid heater lets you switch between traditional steam or infrared heat—or enjoy both together. Controlled via a digital panel or mobile app, it offers total convenience and customisation.

Built-In Comfort & Features

• Smart Controls: Digital computer panel & mobile app.
• Entertainment: FM radio, USB MP3, Bluetooth & 2 integrated speakers.
• Lighting: 1 LED reading light, colour light belt & optional star lights.
• Air Quality: Oxygen ioniser for cleaner, fresher sessions.
• Custom Settings: 18–99ºC temperature range, 1–99 minute timer.

Spacious & Stylish
With its balanced proportions and corner-friendly design, this hybrid sauna suits a wide range of indoor wellness spaces. Ideal for couples or families who want both traditional and infrared therapy in one elegant unit.

• Dimensions: 1800 × 1800 × 2000 mm (W × D × H)
• Power: 6100W
• Voltage: 230V

Included Accessories

• Towel rack
• Bucket & ladle
• Sand timer
• Thermo-hygrometer
• Sauna stones (rinse before use)
• Oxygen ioniser

Assembly & Warranty
Delivered flat-packed with full instructions and video guide for easy setup. Warranty: 1 year on electrics, 2 years on wood.

*Please note: installation requires a qualified electrician to hardwire into mains.

More Than Just Heat: Why Personal Matters
Public spas offer access, but they can’t offer ownership. A home sauna is always clean, always available, and always yours. Like your own bed compared to a hotel mattress, it’s personal, comfortable, and designed around you. With no queues or compromises, you set the pace - every day, on your terms.

Features

• Weight: 345 kg
• Dimensions: 180 × 180 × 200 cm
• Capacity: 4 people
• Heater Type: Infrared carbon fibre & infrared light
• Width: 1800 mm
• Depth: 1800 mm
• Height: 2000 mm
• Power Output: 6100W

Heater Types & Benefits

• Carbon: Far (IR-C) – Provides gentle, evenly distributed heat.
• Ceramic: Mid & Far (IR-B/C) – Heats up quickly with more concentrated warmth.
• Tourmaline: Far (IR-C) – Delivers gentle heat with a naturally calming effect.
• Quartz: Near & Mid (IR-A/B) – Produces rapid, powerful warmth for deeper intensity.

FAQ

How much does it cost to run a sauna?
Running costs depend on wattage and usage time. Our saunas range from 2kW to 10kW. On average, an hour’s use costs between £0.50 and £2.50. For more details, use an electricity cost calculator.

What warranties do you offer?

• Electrical components: 1 year
• Wooden parts: 2 years

Are the saunas easy to assemble/install?
Yes. All saunas include clear assembly instructions. Most panels are secured with buckles or clamps, with minimal screwing required. Infrared saunas plug into a standard household socket, while traditional steam saunas must be hardwired to the mains by a qualified electrician.

How hot do the saunas get?

• Traditional steam saunas: 18–99°C, set via the control panel (0–90 mins).
• Infrared saunas: up to 65°C.

When should I add water to the stones?
Only add water once the stones are fully heated. Adding water too soon reduces steam quality and may damage the heater.

How do I know when the stones are hot enough?
The stones should feel intensely hot when you bring your hand close (without touching). Many heaters also have gauges – wait until it reads at least 300°F (approx. 150°C).

What type of water should I use?
Use clean, distilled water where possible. Tap water with high mineral content may cause limescale build-up over time.

Do I need to take anti-mould precautions?
Generally no, but if your sauna is in a very humid space, keep the area as dry as possible.

What cable size is required?

• 3000W saunas: 2.5 mm supply cable
• 4500W saunas: 4 mm supply cable

Do I need an RCD for a steam sauna?
Yes, RCD protection is required. Please consult a qualified electrician.

Is the sauna delivered assembled?
No, saunas are delivered flat-packed. Assembly is simple, with video and PDF guides included.

How long does it take to heat up?
At an ambient temperature of 10°C:

• ~15 minutes to reach 50°C
• ~30 minutes to reach 70°C

Does the exterior timber get hot?
The outside becomes warm but remains safe to touch, even for children.

Can the exterior be painted?
Yes, it can be painted with suitable wood-coloured paint.

What type of wood is used?
All our saunas are crafted from Canadian Hemlock.

What is an oxygen ioniser?
An optional negative ion generator that freshens the air. Please contact us for pricing.

Are stones included with the heater?
Yes, sauna stones are supplied – rinse thoroughly before use.

Does the control system include a mobile app?
Yes, the control panel includes app connectivity. Please check the product description for confirmation.

How much do replacement heater elements cost?
Please contact us for current pricing on replacement parts.

Delivery

Most saunas are delivered in 3–5 flat-packed boxes or in a single wooden crate (please see the table below for details).

This product is delivered to kerbside only. The driver is not required to carry the package beyond this point.

Packaging Information

• Sauna Type: Infrared Light Saunas
• Weight: 300 kg+
• Number of Boxes: 3–5
• Format: Flat-packed