

J-408L™
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5-6 Seats (Open Seating + Lounger)
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True Water® Nanobubble System
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Exclusive Infrared + Red Light Therapy
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SmartTub® Cellular Control and Remote Monitoring
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6-Stage Filtration with ProStream™ Pump
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Jacuzzi® High Efficiency, Multi-Layered Insulation
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Industry-Leading Manufacturer Warranty (Parts and Labour)
DETAILS
Introducing the new J408L™ hot tub, defined by clean lines and a sleek, modern aesthetic that brings contemporary luxury to any outdoor space. Its confident silhouette, illuminated infinity-edge waterfall and wide deck create a presence that feels considered, architectural and unmistakably premium.
A sculpted full-body lounger anchors the design, delivering a refined balance of comfort and presence. Integrated SmartTub® connectivity provides intelligent control and monitoring, enhancing everyday ownership with seamless functionality.
True Water™ nanobubble technology comes as standard, producing beautifully clear water that is 99.9% chlorine-free and exceptionally soft to the touch.
The J408L™ represents the evolution of premium hydrotherapy, engineered for those who expect more from every soak.
Features Include:
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Patented PowerPro® hydrotherapy jets
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Preset hydromassage levels
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ProTouch™ touchscreen control
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BLUEWAVE® surround sound
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Illuminated waterfall
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Interior and exterior LED lighting
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SmartSeal™ insulation system
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Hybrid galvanised steel frame
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Heat-pump ready design
J4™ THERAPY
INDUSTRY-LEADING HYDROTHERAPY
The J408L™ features our exclusive Infrared + Red Light therapy system, integrating targeted Infrared heat into a dedicated therapy seat to complement powerful hydromassage. The J4™ Collection utilises two integrated Infrared emitters, focused on the lumbar region to deliver concentrated warmth to the lower back, while surrounding PowerPro® jets provide adjustable massage across the body.
Developed in collaboration with medical experts, Jacuzzi® Infrared and Red Light therapy is designed to maximise the clinically supported benefits of infrared treatment.
These benefits include:
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Pain relief: Helps increase circulation to support muscle and joint comfort.
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Improved skin health: Encourages collagen production and skin elasticity.
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Repairing properties: Supports natural tissue repair and cellular renewal.
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Wellbeing: Promotes relaxation, improved mood and better sleep quality.
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Improved range of motion: Helps muscles feel looser and more flexible.
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Regeneration: Encourages healthy cellular activity and energy production.
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Engineered to deliver a deeply structured hydromassage experience, the J408L™ combines precision-placed Jacuzzi® PowerPro® jets with a seating layout designed for purposeful, full-body coverage.
The lounger provides continuous lower-body hydromassage, while upright seats target the back, lumbar and shoulders, creating distinct therapy profiles throughout the spa. Two Jacuzzi® PowerPro® MX jets positioned within the footwell deliver focused massage to the feet, enhancing lower-body coverage and introducing a reflexology-style experience.
A carefully calibrated mix of FX, FX-R, MX, NX and RX jet formations works across key muscle groups, producing a high-volume, low-pressure massage that feels smooth on the surface and deeply effective where it matters most.
At the core of every Jacuzzi® hot tub is our Aqualibrium® formula, balancing air and water through the ideal pump-to-jet ratio to ensure hydromassage remains powerful, consistent and refined in every seat.
Combining 70 years of world-leading innovation with advanced engineering, the J4™ Collection showcases patented Jacuzzi® jet technology designed for precision and reliability.
Hydrotherapy benefits include:
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Muscle relaxation: Helps ease tension and muscular stiffness.
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Joint comfort: Supports reduced impact on joints during movement.
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Improved circulation: Encourages healthy blood flow.
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Stress reduction: Promotes relaxation and overall wellbeing.
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Better sleep: Supports improved sleep quality.
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Mobility support: Helps maintain flexibility and range of motion.
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Skin cleansing: Warm water immersion helps open pores.
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Reduced muscle tightness: Supports post-activity comfort.
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Mental clarity: Encourages focus and relaxation.
J4™ ENERGY EFFICIENCY
Through decades of engineering expertise, we’ve refined our approach to creating the most energy-efficient hot tubs available today. By combining advanced control systems, SmartSeal™ multi-layer insulation and precision manufacturing, Jacuzzi® continues to set the benchmark for energy-saving hot tubs.
Unlike other brands, Jacuzzi® can accurately provide estimated average running costs for each model using exclusive SmartTub® technology, based on real-world usage data.
All Jacuzzi® hot tubs undergo rigorous testing by the California Energy Commission (CEC), which has found that, on average, they perform 22% more efficiently than the strict standards they set out.
Using our SmartTub® app, we gather anonymised real-world usage data showing that the average Jacuzzi® UK customer consumes approximately 5 kWh per day – equivalent to a family of four taking a 10-minute shower daily.*
*All °C temperatures are rounded to the nearest whole degree. This information was collected over two years from UK Jacuzzi® hot tubs connected to SmartTub® energy monitoring. The data shown represent the median and are based on the recorded sample size.
J408L™ WARRANTY
Built to the highest standards of quality and durability, every J4™ hot tub is supported by a comprehensive Parts and Labour warranty, giving you complete confidence in your investment for years to come.
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10 Years Shell Structure
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7 Years Shell Surface
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3 Years Equipment and Controls
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3 Years Plumbing and Components
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5 Years Cabinet
J408L™ SPEC
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Dry Weight: 415 KG
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Jets: 39
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Primary Pump: 1 x 2-speed 2.0 HP
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Secondary Pump: 1 x 1-speed 2.0 HP
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Filtration System: 5-stage filtration
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Electrical: 32A
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Filter Type: 5-stage filtration
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Waterfalls: 1
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Water Management System: True Water®
J408L™ DIMENSIONS
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Height (cm): 87.0
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Length (cm): 227.0
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Width (cm): 227.0
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Filled Weight (kg): 1645.0
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Volume (Litres): 1231.0





