Jonas 2-Person Modern Outdoor Sauna Cabin | Celsium Wellness-1
Jonas 2-Person Modern Outdoor Sauna Cabin | Celsium Wellness-2
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Jonas 2-Person Modern Outdoor Sauna Cabin | Celsium Wellness-8

Jonas 2-Person Modern Outdoor Sauna Cabin | Celsium Wellness

£9,999.00
Free Delivery
Two Year Warranty
Add Free Customisable Options

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  • Product Description
  • Buying Guide
  • Delivery & Installation
  • Warranty
  • Returns Policy
  • Resources
Product Description -

Jonas Mini – The Ultimate Space-Saving Luxury Garden Sauna

Redefine your garden sanctuary with the Jonas Mini—the UK’s most sophisticated compact outdoor sauna. Engineered for those who refuse to compromise on design, the Jonas Mini delivers a professional-grade thermal experience within a minimalist, space-saving footprint.

In 2026, luxury is defined by Precision. The Jonas Mini is not just a sauna; it is a handcrafted architectural statement. Designed to fit seamlessly onto premium terraces, balconies, or curated urban gardens, it features an iconic floor-to-ceiling panoramic glass facade that blurs the line between your private retreat and the natural world. Whether you are a solo biohacker or a couple seeking a shared ritual, the Jonas Mini offers an immersive escape that fits where others cannot.

The Jonas Mini Advantage: Elite Engineering, Personalised

1. Compact Footprint, Unlimited Luxury

The Jonas Mini is the definitive answer to "Luxury in Limited Space." Its optimised dimensions ensure rapid heat-up times and exceptional energy efficiency, making it perfect for spontaneous daily use. Despite its small exterior, the interior is meticulously designed to provide an open, airy feel, supported by the expansive glass front.

2. Artisan Craftsmanship & Premium Materials

Every Jonas Mini is hand-finished by master artisans using sustainably sourced Nordic timber. Choose from three world-class exterior finishes:

  • Scandinavian Spruce: For a timeless, natural Nordic elegance.
  • Thermo Pine: Heat-treated for maximum dimensional stability in the UK climate.
  • Shou Sugi Ban: A traditional Japanese charred finish for ultimate weather resistance and a striking matte-black aesthetic.

3. Bespoke Glass & Interior Curation

Tailor your atmosphere to your exact aesthetic. The Jonas Mini offers exclusive glass options, including Planibel Black for dramatic privacy, Bronze/Grey tints, or Full Mirror glass for a seamless, light-reflecting garden finish. Inside, choose from Aspen, Black Alder, or Thermo Aspen to create a scent and texture profile that matches your recovery needs.

4. The Heart of the Heat: Smart Integration

The Jonas Mini is compatible with the world’s most advanced heating systems. From the sculptural Huum Drop to the Harvia Spirit WiFi, you can pre-heat your sanctuary from your smartphone, ensuring your 110°C peak performance is ready the moment you finish your training or workday.

Technical Specifications (Jonas Mini)

  • Capacity: 2 Persons (Ideal for solo recovery or intimate sessions).
  • Dimensions: Ultra-compact footprint designed for balconies and small gardens.
  • Glass: 8mm Tempered Safety Glass (Panoramic Facade).
  • Lighting: Integrated ambient LEDs (under-bench/backrest options).
  • Customisation: Dual door placement (Left or Right) at no extra cost.

Build: Available as a precision-fit Flat-pack or Fully Assembled delivery.

Buying Guide +

The Celsium Sauna Experience Buying Guides

How It Works

The Celsium range represents the pinnacle of Nordic-inspired outdoor wellness. Because each sauna is a bespoke timber structure tailored to your specifications, we follow a meticulous process to ensure your installation is seamless and transparent.

Below is the step-by-step journey from your initial order to your first session.

1. Consultation, Place Your Order & Site Assessment

Your journey begins with selecting the Celsium model that fits your lifestyle, such as the popular Jonas Classic.

We invite you to schedule a personalised consultation with our specialist team to discuss your project in detail. We recognise that a wellness installation of this calibre is a significant investment, and we are dedicated to providing the expert guidance and transparency you need to move forward with complete confidence.

  • Proactive Logistics: Before we move your sauna into production, we consult with our "last-mile" delivery team. We verify your property access and site details to ensure that every logistical hurdle is cleared in advance.
  • Bespoke Confirmation: Once we are confident the site is accessible and the specifications are correct, your order is officially logged.

2. Handcrafted Production

Celsium saunas are not mass-produced; they are handcrafted to order.

  • The Timeline: Due to the bespoke nature and high level of customisation, the production lead time is 6 weeks.
  • Total Lead Time: Once production is complete, we allow an additional 2 weeks for secure transit and delivery coordination, making the total journey from order to your doorstep approximately 8 weeks.

3. Delivery & Professional Installation Services

We believe in a "concierge" approach to logistics to ensure your sauna arrives in pristine condition.

  • Complimentary Delivery: Delivery to your kerbside is free of charge.
  • Professional Assembly: To ensure your sauna is built to factory standards, we offer an expert installation service. You can request a bespoke quote at the point of purchase, and we will provide a clear timeline for our team to arrive and complete the build.

4. Preparation Checklist (Pre-Delivery)

To ensure your sauna performs perfectly for decades, two areas of preparation are essential:

  • The Foundation: You must provide a solid, level base. This base must be engineered to support the combined weight of the structure and its occupants.
    • Example: If your sauna weighs 600kg and is a 4-person model, your base should be rated to support 1,000kg – 1,100kg to account for the "live load" of users.
  • Electrical Requirements: Electrical installation is the customer’s responsibility. We strongly recommend consulting a qualified electrician before placing your order.
    • Resources: We will provide you with the specific wiring and heater manuals for your model in advance so your electrician can prepare the correct armoured cabling and RCD protection.

5. Delivery & Inspection

On your scheduled delivery day, our team ensures a high-touch handover:

  • Palletised Arrival: Your sauna will arrive securely palletised and weather-wrapped to protect the timber components.
  • Integrated Assistance: We provide kerbside delivery as standard. However, if access permits, our team will get the pallet as close to your desired position as possible. Our delivery crew will also assist you in manually carrying the individual components from the pallet to your designated installation site.
  • The 24-Hour Rule: Once unpacked, please check all components carefully. To maintain warranty eligibility, any missing or damaged items must be reported to us within 24 hours.

6. Installation Pathways

A Celsium sauna is a precision-engineered structure. You have two primary options for assembly:

  • Option A: Internal Installation Team: We can deploy a team of two-three qualified carpenters to assemble your sauna on-site. Most builds are completed in one working day, though larger bespoke structures may take longer.
    • Pricing: The installation fee covers the build. Travel is free within Mainland UK (England).
    • Extended Areas: We provide installation services to the Channel Islands, Ireland, Scotland, Wales, the Isle of Wight, and Guernsey, though these will be quoted separately based on travel and logistics.
  • Option B: Independent Carpenter: We recommend that only a qualified carpenter handle the assembly if you are not using our internal team.

7. Warranty Validation & Handover

To validate your manufacturer’s warranty and protect your investment:

  • Essential Wood Treatment: You must immediately apply a breathable wood oil to both the interior and exterior of the build. This protects the timber from moisture and UV damage while allowing the wood to "breathe" during heat cycles.
  • Mechanical & System Check: Our team (or your installer) will verify that all doors, windows, and ventilation slats function smoothly.
  • Test Cycle: Once the electrician has certified the connection, run a full test cycle of the heater and any integrated LED systems to ensure everything is calibrated correctly.

8. Enjoy Your Sauna & Aftercare

Your Celsium sauna is designed to be a lifetime sanctuary.

  • Aftercare: Periodically inspect the timber finish and the electrical components. We recommend re-applying breathable oil as needed, depending on your local climate.
  • Ongoing Support: As your dedicated reseller, we are here for the long haul. Contact us anytime for replacement parts, seasonal maintenance advice, or technical assistance.
Delivery & Installation +

Proactive Logistics & Lead Times

We recognise that a wellness installation of this calibre is a significant investment. We ensure all logistical hurdles are cleared before your sauna enters production.

  • Site Assessment: Before production begins, we consult with our "last-mile" delivery team to verify property access and site details.
  • Production Timeline: Celsium saunas are handcrafted to order. The production lead time is 6 weeks.
  • Total Lead Time: We allow an additional 2 weeks for secure transit and delivery coordination, making the total journey from order to doorstep approximately 8 weeks.

Delivery & Handover

We are committed to a high-touch delivery experience to ensure your sauna arrives in pristine condition.

  • Complimentary Shipping: Delivery to your kerbside is free of charge within the UK Mainland.
  • Palletised Arrival: Your sauna arrives securely palletised and weather-wrapped to protect the timber components.
  • Integrated Assistance: As standard, our delivery crew will assist you in manually carrying the individual components from the pallet to your designated installation site (where access permits).
  • 24-Hour Quality Audit: Please inspect all components upon unpacking. To maintain warranty eligibility, any transit-related concerns must be reported within 24 hours.

Preparation Checklist (Pre-Delivery)

To ensure a successful installation, the following must be prepared in advance:

  • The Foundation: You must provide a solid, level base engineered to support the structure's weight plus the "live load" of occupants (e.g., a 600kg sauna for 4 people requires a base rated for 1,000kg – 1,100kg).
  • Electrical Requirements: Electrical installation is the customer’s responsibility. You must consult a qualified electrician to ensure the correct armoured cabling and RCD protection are installed. We will provide specific wiring manuals in advance to assist your professional.

Installation Pathways

A Celsium sauna is a precision-engineered structure. You have two primary options for assembly:

Option A: Professional Internal Installation

  • We can deploy a team of 2–3 qualified carpenters to assemble your sauna on-site.
  • Timeline: Most builds are completed in one working day.
  • Pricing: If you request a quote, we can give you a more accurate price as this is model-dependent.
  • Coverage: Travel is free within Mainland UK (England). Services to the Channel Islands, Ireland, Scotland, Wales, the Isle of Wight, and Guernsey are available and quoted separately.

Option B: Independent Carpenter

If you choose not to use our team, we strongly recommend that only a qualified carpenter handles the assembly to ensure the structure is built to factory specifications.

Warranty Validation & Ongoing Aftercare

To protect your investment and validate your manufacturer’s warranty:

  • Essential Wood Treatment: You must immediately apply a breathable wood oil to both the interior and exterior to protect the timber from moisture and UV damage.
  • Final System Check: Verify that all doors, windows, and ventilation slats operate smoothly, and perform a full heater test cycle once the electrical connection is certified.
  • Ongoing Support: As your dedicated partner, we provide ongoing customer support for the life of your sauna. Contact us anytime for seasonal maintenance advice, replacement parts, or technical assistance.
Warranty +

Professional 2-Year Limited Warranty: Celsium Wellness Saunas

As an authorised professional provider of Celsium Wellness Saunas, we offer a comprehensive 2-Year (24-Month) Warranty across our entire sauna collection. Engineered to elite Scandinavian standards, Celsium saunas represent the pinnacle of outdoor and indoor wellness, utilising premium materials and advanced structural craftsmanship to ensure a lifetime of therapeutic performance.

This warranty provides peace of mind for our high-end clientele, ensuring that your investment is backed by professional-grade hardware guarantees and dedicated technical aftercare.

1. Warranty Scope & Coverage Duration

Every Celsium Wellness product is protected by a 24-month guarantee, effective from the date of delivery. This warranty covers manufacturing and material defects, ensuring your system performs to its intended high-level specifications.

Component Category Warranty Period Coverage Specifics
Structural Integrity 2 Years Main cabin structure, precision joinery, and frame.
Manufacturer Defects 2 Years All integrated hardware and production-related faults.
Technical Support Lifetime Access to professional wellness consultants and support.
Heater Components Varies Protected under specific manufacturer terms (Harvia/HUUM).

2. Professional Quality Standards

Celsium saunas are designed for durability in fluctuating climates. This warranty safeguards the premium engineering that distinguishes Celsium as a leading choice for luxury recovery environments.

I. Structural & Material Guarantee

  • Premium Timber Integrity: Coverage for defects in the raw materials and craftsmanship that compromise the structural safety of the sauna.
  • Precision Glazing: Protection for the tempered glass panels and panoramic windows against manufacturing-related stress fractures.
  • Hardware & Fittings: Full coverage for high-durability hinges, handles, and internal bench structures.

II. Heating & Intelligent Controls

  • Manufacturer Alignment: Celsium utilises the world's most reliable heating systems (including Harvia and HUUM). These components are covered under their respective professional warranties, typically ranging from 2–5 years for private residential use.
  • Electrical Safety: Protection for factory-installed wiring and integrated lighting modules when commissioned by a qualified professional.

3. Professional Installation & Maintenance

To ensure the longevity of your 2-year warranty and the safety of the unit, the following professional criteria must be met:

  • Certified Assembly: The warranty is valid provided the sauna is assembled according to the guidelines in the Celsium User Manual. Please note that certain warranty protections may be invalidated if the unit is not professionally assembled by an authorised team or a certified contractor.
  • Electrical Commissioning: All electrical components, including heaters and control panels, must be connected by a qualified electrician. Proof of certified installation may be required to process a claim.
  • Site Preparation: The sauna must be placed on a level, solid foundation (concrete, gravel, or reinforced decking) to prevent structural warping or moisture ingress.
  • Maintenance Protocols: Regular maintenance, including appropriate wood staining and internal cleaning as outlined in the manual, is a prerequisite for continued warranty validity.

4. General Exclusions

This warranty is designed to protect against faults in craftsmanship and materials. It does not cover:

  • Natural Wood Characteristics: As a natural product, wood may experience minor discolouration, dimensional changes, or small cracks due to humidity fluctuations. These are not considered defects.
  • Environmental Damage: Damages caused by extreme weather events (storms, lightning, floods) or improper outdoor storage (unassembled units left for over 1 year).
  • Improper Use: Damages resulting from maintaining the sauna at temperatures exceeding 120°C or using it for purposes other than its intended function.
  • Unauthorised Repairs: Any modifications or attempted repairs by non-authorised personnel will immediately void the warranty.

5. Commercial & Trailer Installations

Products used in commercial environments (such as spas, rental facilities, gyms, health clubs) or installed on mobile trailers may be subject to unique warranty terms. These terms are different from the 2-year standard and must be confirmed at the time of purchase or in your User Manual.

6. Claim Procedure & Support

To activate your warranty service, any identified defects must be reported to our team within 7 days of discovery.

Required for Claim:

  • Proof of Purchase and Delivery Date.
  • Photographs/Video of the identified defect.
  • Confirmation of professional electrical installation.

For technical assistance or to submit a warranty inquiry, please contact our support team at contact@balancerecovery.co.uk

Returns Policy +

Returns and Refunds Policy: Bespoke & Made-to-Order Collection

At Balance Recovery, we curate a selection of premium, made-to-order products designed to meet the highest standards of wellness and craftsmanship. Because items within our bespoke range are commissioned specifically to your requirements, our returns and refunds policy is structured to reflect the specialised nature of these products.

1. The Bespoke Nature of Your Purchase

Products in our made-to-order collection are commissioned and prepared according to the specific dimensions, materials, and finishes selected at the time of purchase.

  • Final Sale: Due to the personalised nature of these items, we are unable to accept returns or offer refunds for a "change of mind" once the order has entered production.
  • Accuracy: We encourage customers to verify all site dimensions and technical requirements before finalising an order.

2. Natural Material Disclosure

Many products in our collection are crafted from high-quality, sustainably sourced timber. Wood is a natural, living material, and as such:

  • Unique Characteristics: Every item will feature distinct variations in grain pattern, knots, and texture.
  • Tone & Colour: Final wood shading may vary slightly from digital gallery images or physical samples. These nuances are not considered manufacturing defects but are evidence of the material's authentic, natural origin.
  • Environmental Response: Minor surface "shakes" (small cracks) may occur as wood adapts to its environment; these do not compromise the structural integrity or performance of the product.

3. Order Cancellations and Amendments

To ensure timely delivery, orders are processed into the production cycle shortly after confirmation.

  • Cancellation Window: You may request a cancellation or amendment within 24 hours of placing your order.
  • Administration Fees: Cancellations requested after this window, but before the commencement of fabrication, will incur a 10% fee to cover administrative costs and material allocation with our production partners.
  • Post-Fabrication: Once an item has entered production, we are unable to facilitate cancellations.

4. Damages and Manufacturing Faults

Every product undergoes a rigorous quality assurance check before dispatch. In the event of a discrepancy:

  • Transit Damage: Please inspect your delivery immediately. Any damage sustained during transit must be noted on the delivery paperwork and reported to contact@balancerecovery.co.uk within 48 hours, accompanied by photographic evidence.
  • Manufacturing Defects: If a product is found to have an inherent manufacturing fault, please contact our support team. We will coordinate with our specialist technicians to provide a repair, replacement, or refund in accordance with the Consumer Rights Act 2015.

5. Statutory Rights and Compliance

Our policy is designed to be fully transparent and compliant with UK Consumer Law:

  • Consumer Contracts Regulations 2013: Bespoke and made-to-order goods are legally exempt from the standard 14-day "cooling-off" period for distance selling.
  • Consumer Rights Act 2015: Your purchase must be of satisfactory quality, fit for purpose, and as described. Your statutory rights regarding faulty or misdescribed goods remain fully protected.

6. Contact and Support

If you have any questions regarding the specifications of a product or the status of an existing order, please contact our concierge team:

Email: contact@balancerecovery.co.uk

Response Time: We aim to address all inquiries within one business day.

Product Overview

Jonas Mini — Compact Outdoor Sauna for Personal Wellness

The Jonas Mini Outdoor Sauna brings a high-quality sauna experience to smaller outdoor spaces without compromising on design or performance. Built around a compact footprint that fits seamlessly on balconies, patios, or compact garden corners, this sauna is perfect for solo use or relaxing heat sessions for two. It blends minimalist Scandinavian form with efficient heat performance to create a stylish wellness feature that enhances your outdoor lifestyle and supports daily relaxation.

Why Choose The Jonas Mini?

Small Footprint, Big Experience

If you want the benefits of a premium outdoor sauna but lack space for larger models, the Jonas Mini delivers. Its deliberately compact design doesn’t sacrifice comfort — instead, it focuses on efficient use of space, smart interior layout, and light-filled warmth. The ability to configure the door on either side or centrally gives flexibility for tight spaces while maintaining ease of access and session comfort.

Wellness benefits

Compact Footprint. Boundless Healing.

Premium Features

Expansive Views in an Efficient Footprint.

What’s Included?

Compact Scale. Complete Craftsmanship.

Step-by-Step Instructions

From Order To First Heat In 6 Steps

Build Overview

Technical Specifcations

FeatureSpecification
Capacity2 Person
Coverage Area3.3m²
Steam Room Volume2.29m³
Outer Dimensions (W x D x H)1.530m x 2.160m x 2.490m
Inner Dimensions (W x D x H)1.230m x 1.860m x 2.100m
Weight620kg
Pallet Size (Flat Pack)1.800m x 2.500m x 1.200m
Construction MaterialPremium Nordic Timber (Sauna walls, ceiling, and floor insulated with 5 cm PIR insulation boards)
Door TypeFull-Height Tempered Glass 8mm
Exterior FinishHorizontal Slatted Timber
OptionaryInfrared panels
Recommended Heating Output4.5-6 kW (Three-phase power supply required)
Foundation RequiredSolid, level base (min 1.6m x 2.2m)
OriginHandcrafted in Lithuania

Technical Notes

Frequently Asked Questions

1) How many people can use the Jonas Mini at once?
2) Do I need a special base before installation?
3) Is delivery kerbside?
4) Can I position the door anywhere?
5) Does it come with a heater?
6) Is it suitable for year-round outdoor use?
7) How long until it heats up?
8) Can I customise finishes?

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