Joule Cyclone Plus Direct Slim 90–210L Unvented Hot Water Cylinder

Joule Cyclone Plus Direct Slim 90–210L Unvented Hot Water Cylinder

The Joule Cyclone Plus Direct Slim range (90L, 120L, 150L, 180L, 210L) is expertly engineered to deliver powerful, mains pressure hot water while fitting into the tightest UK cupboard and plant spaces. With its reduced slimline diameter and robust Duplex stainless steel construction, this unvented electric-only cylinder is perfect for apartments, conversions, and homes with limited installation room—without compromising reliability or performance.

Key Features:

• Slimline diameter (475mm) for easy siting in narrow or space-constrained locations
• Direct unvented electric operation – supplied with high-quality, factory-fitted immersion heaters
• Main pressure performance provides fast, powerful hot water delivery to multiple taps or showers
• Premium Duplex stainless steel cylinder for outstanding durability and corrosion resistance
• High insulation values with dense 100% CFC/HCFC-free polyurethane foam to ensure minimal heat loss
• Comprehensive safety valve group (including expansion vessel, temperature and pressure relief valve)
• Quality controls and fittings supplied, with all connections positioned for straightforward installation
• Modern white outer case – white goods aesthetic for a clean, premium finish
• ODP 0 and GWP 1 insulation rating for environmental friendliness
• 25-year manufacturer warranty on the cylinder; 2 years on all controls/components

Technical Specifications:

• Capacities: 90L, 120L, 150L, 180L, 210L
• Diameter: approximately 475mm (varies slightly per model)
• Height: e.g. 90L – ~936mm; 120L – ~1205mm; 150L – ~1324mm; 180L – ~1469mm; 210L – ~1712mm
• Electric immersion heater: factory-fitted, typically 3kW Incoloy (or as specified)
• Maximum working pressure: 3.5 bar (with supplied inlet group)
• Safety group: factory-fitted expansion vessel, T&P valve, and plastic tundish
• Insulation: dense, high-efficiency polyurethane foam (CFC/HCFC-free)
• All key plumbing connections on front for access and speed of install

Other Details:

• Supplied pre-assembled with clear installation instructions
• Compatible with standard UK time switches and thermostatic controls
• Perfect for new builds, lofts, cupboard replacements, and restricted plant rooms
• WRAS approved and fully compliant with Building Regulations

Why Choose the Cyclone Plus Direct Slim?

Choose Joule Cyclone Plus Direct Slim for maximum flexibility and mains pressure hot water—where standard cylinders just won’t fit. Enjoy the benefits of efficient direct electric heating, sustainably engineered materials, and highly robust, UK-built construction—all with a market-leading 25-year warranty and compliance with UK safety and installation standards.