CenturaHeat
CenturaHeat Double 2 Person Combination Bio Indoor Sauna
CenturaHeat Double 2 Person Combination Bio Indoor Sauna
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Estimated Delivery: 31st December 2025 - 15th January 2026
The Double 2 Person Combination Bio Indoor Sauna combines luxury with a space-saving design, perfect for couples or individuals who value both comfort and flexibility. Crafted from durable Canadian Hemlock and equipped with dual heat technology, it delivers the combined benefits of soothing infrared warmth and revitalising deep-penetration light therapy—all in one compact unit.
Tailored Heat with Smart Control
Powered by 2200W of infrared carbon fibre and infrared light, this sauna gently warms the body, relieves muscle tension, and supports detoxification. Sessions can be customised via the onboard digital control panel or remotely through the mobile app.
- Temperature Range: 18–65ºC
- Session Timer: 1–99 minutes
- Voltage: 230V
Music, Mood & More
Personalise your sessions with integrated technology:
- FM radio, USB MP3 player & charging port.
- Bluetooth audio streaming.
- Two high-quality speakers.
Lighting Options
- Two LED reading lights.
- Ambient coloured light belt.
- Optional coloured star lights for a spa-like atmosphere.
Breathe Cleaner
An optional oxygen ioniser helps improve air quality, reducing allergens and airborne particles for a fresher environment.
Specifications
- Dimensions: 1600 × 1100 × 2040 mm (W × D × H)
- Power: 2200W
- Voltage: 230V
Included Accessories
- Towel rack
- Bucket & ladle
- Sand timer
- Thermo-hygrometer
- Sauna stones (rinse before use)
- Optional oxygen ioniser
Assembly & Warranty
Delivered flat-packed with full instructions and a video guide for easy assembly. Warranty: 1 year on electrical components, 2 years on wood.
*Plug-and-play design: simply connect to a standard UK socket once assembled.
When Wellness Becomes Personal
Owning a sauna at home is like sleeping in your own bed—private, clean, and completely yours. Unlike shared spa facilities, it offers total control over your environment. Set the heat, adjust the lighting, play your music, and relax on your schedule. No queues, no strangers, no compromises—just pure wellness whenever you want it.
Features
- Dimensions: 160 × 110 × 204 cm
- Capacity: 2 people
- Heater Type: Infrared carbon fibre & infrared light
- Width: 1600 mm
- Depth: 1100 mm
- Height: 2040 mm
- Power Output: 2200 W
Heater Types & Benefits
- Carbon: Far (IR-C) – Provides gentle, even warmth.
- Ceramic: Mid & Far (IR-B/C) – Quick warm-up with focused heat.
- Tourmaline: Far (IR-C) – Gentle heat with a calming effect.
- Quartz: Near & Mid (IR-A/B) – Delivers rapid, powerful heat.
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
- Description
- Features
- FAQ
- Delivery
- Delivery & Returns
Estimated Delivery: 31st December 2025 - 15th January 2026
The Double 2 Person Combination Bio Indoor Sauna combines luxury with a space-saving design, perfect for couples or individuals who value both comfort and flexibility. Crafted from durable Canadian Hemlock and equipped with dual heat technology, it delivers the combined benefits of soothing infrared warmth and revitalising deep-penetration light therapy—all in one compact unit.
Tailored Heat with Smart Control
Powered by 2200W of infrared carbon fibre and infrared light, this sauna gently warms the body, relieves muscle tension, and supports detoxification. Sessions can be customised via the onboard digital control panel or remotely through the mobile app.
- Temperature Range: 18–65ºC
- Session Timer: 1–99 minutes
- Voltage: 230V
Music, Mood & More
Personalise your sessions with integrated technology:
- FM radio, USB MP3 player & charging port.
- Bluetooth audio streaming.
- Two high-quality speakers.
Lighting Options
- Two LED reading lights.
- Ambient coloured light belt.
- Optional coloured star lights for a spa-like atmosphere.
Breathe Cleaner
An optional oxygen ioniser helps improve air quality, reducing allergens and airborne particles for a fresher environment.
Specifications
- Dimensions: 1600 × 1100 × 2040 mm (W × D × H)
- Power: 2200W
- Voltage: 230V
Included Accessories
- Towel rack
- Bucket & ladle
- Sand timer
- Thermo-hygrometer
- Sauna stones (rinse before use)
- Optional oxygen ioniser
Assembly & Warranty
Delivered flat-packed with full instructions and a video guide for easy assembly. Warranty: 1 year on electrical components, 2 years on wood.
*Plug-and-play design: simply connect to a standard UK socket once assembled.
When Wellness Becomes Personal
Owning a sauna at home is like sleeping in your own bed—private, clean, and completely yours. Unlike shared spa facilities, it offers total control over your environment. Set the heat, adjust the lighting, play your music, and relax on your schedule. No queues, no strangers, no compromises—just pure wellness whenever you want it.
- Dimensions: 160 × 110 × 204 cm
- Capacity: 2 people
- Heater Type: Infrared carbon fibre & infrared light
- Width: 1600 mm
- Depth: 1100 mm
- Height: 2040 mm
- Power Output: 2200 W
Heater Types & Benefits
- Carbon: Far (IR-C) – Provides gentle, even warmth.
- Ceramic: Mid & Far (IR-B/C) – Quick warm-up with focused heat.
- Tourmaline: Far (IR-C) – Gentle heat with a calming effect.
- Quartz: Near & Mid (IR-A/B) – Delivers rapid, powerful heat.
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.
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
Order Confirmation: As soon as you place your order, we will pre-authorise your card however your card will not be charged. We will then contact our supplier to confirm that the product you have purchased is available for immediate shipment. Once confirmed we will process the payment and your order will be dispatched straight away. If there is any delay such as an item which is on backorder, we will void the pre-authorisation and contact you to let you know.
Order Delivery: Once your order has been placed, assuming it is in stock and available for dispatch, we will charge your card and your order will be dispatched within 5 working days. We’ll send you tracking details by email within 24 hours of your order being dispatched. If you have not received tracking details within 6 working days, please reach out to us via email at contact@gymsphere.co.uk so that we can help.
Damages: We ask that you thoroughly inspect all items at the point of delivery. We advise you not to accept delivery of any damaged items. If you discover that an item has been damaged, please send clear photos of the damaged items
to contact@gymsphere.co.uk so that we can open an insurance claim on your behalf.
Cancellations & Refunds: Any orders cancelled after 48 hours of placing the order may be subject to additional fees. If your order has been dispatched, you (the buyer) will be responsible for any costs associated with returning the item. Any refunds can only be issued to the same payment method which was used to place the order.