Telford Tempest Stainless Steel Direct Unvented Slim Line Twin Immersion Heater Cylinders

Maximise hot water performance in compact spaces with the Telford Tempest Direct Unvented Slim Line Twin Immersion Cylinder — expertly designed for homes without a boiler, running solely on electricity. Featuring a slimline profile for tighter installations and two high-efficiency immersion heaters, this cylinder ensures fast heat-up times, reliable hot water delivery, and energy-saving operation.

Constructed from premium duplex stainless steel, the Tempest Slim Line range is corrosion-resistant, low-maintenance, and built for long-lasting durability. The twin immersion heater setup allows for boost and economy modes, giving you more control over energy usage — ideal for off-peak tariffs and maximising efficiency.

Why Choose Telford Tempest Direct Unvented Slim Line Twin Immersion Cylinders?

✔️ Twin Immersion Heaters – Ideal for homes using electricity only, with boost and economy heating control.
✔️ Slim Profile Design – Fits in narrow airing cupboards, closets, or tight installation spaces.
✔️ Unvented Mains Pressure Performance – Delivers powerful, balanced hot water to multiple outlets simultaneously.
✔️ Stainless Steel Construction – Corrosion-resistant and built to withstand daily use.
✔️ Energy-Efficient Design – Fast heat-up and excellent insulation reduce running costs.
✔️ Made in the UK – Manufactured by Telford, trusted for superior hot water solutions.

Key Features

• Slimline unvented direct hot water cylinder

• Twin immersion heaters for flexible heating schedules

• No need for a boiler – fully electric solution

• Made from high-grade duplex stainless steel

• Delivers mains pressure hot water to all outlets

• Factory-applied foam insulation for minimal heat loss

• Supplied with full unvented kit including expansion vessel and safety components

• WRAS approved

• 25-year manufacturer’s warranty on the cylinder (2 years on components)

Key Specifications

• Brand: Telford

• Range: Tempest Slim Line

• Type: Direct Unvented Twin Immersion Cylinder

• Material: Duplex Stainless Steel

• Orientation: Vertical (Slimline)

• System Type: Direct (Electric Only)

• Performance: Unvented – Mains Pressure

• Heating Elements: Twin Immersion Heaters

• Warranty: 25 Years (Cylinder) / 2 Years (Parts)

• Capacity Options: [Insert sizes – e.g. 120L, 150L, 180L, etc.]

• Diameter: Slim Profile – Ideal for tight spaces

What’s in the Box?

• 1 x Telford Tempest Slim Line Direct Unvented Cylinder (Twin Immersion)

• Twin immersion heaters (factory fitted or ready to install)

• Expansion vessel

• Tundish & pressure relief valves

• Full installation & user manual

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The Telford Tempest Slim Line Direct Unvented Twin Immersion Cylinder is the perfect electric-only hot water solution for properties with space restrictions. Its slim profile, twin immersion flexibility, and powerful mains pressure performance make it a smart, efficient choice for modern living.