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Joule Invacyl Indirect Slimline Unvented Cylinder 90L-210L

Product Logo
SKU TRBMVI-0090SFC-1
Original price £693.05 - Original price £767.45
Original price
£693.05
£693.05 - £767.45
Current price £693.05
Image

The Joule Invacyl Indirect Slimline Unvented Cylinder (90L–210L) is a compact, high-performance hot water solution designed for properties with limited space. Manufactured from durable LDX 2101 stainless steel, this slimline cylinder delivers powerful mains-pressure hot water while maintaining excellent energy efficiency through dense PU foam insulation. Featuring a high-efficiency 316L stainless steel indirect coil, it ensures rapid heat transfer from boilers, heat pumps, or solar systems. Ideal for apartments, small homes, and modern installations, the Invacyl range offers reliable performance, low heat loss, and long-lasting durability backed by a 25-year warranty.



25 Years
Warranty
7 Bar
Operating Pressure
10 Bar
Max Pressure
90L–210L
Capacity Range

Key features

01

Slimline Space-Saving Design

Designed for tight spaces, the slimline profile allows easy installation in cupboards and compact utility areas without compromising performance.

02

Wide Capacity Range (90L–210L)

Available in multiple sizes to suit different property needs, from small apartments to medium-sized homes.

03

High-Efficiency Indirect Coil

316L stainless steel heat exchanger ensures fast and efficient heat transfer from external heat sources like boilers and heat pumps.

04

Durable Stainless Steel Construction

Built with corrosion-resistant LDX 2101 stainless steel for long-term reliability and reduced maintenance.

05

Excellent Thermal Insulation

Dense PU foam insulation minimises heat loss, improving energy efficiency and reducing running costs.

06

Mains Pressure Hot Water Performance

Delivers strong, consistent water pressure for showers and taps without the need for a pump.

Technical Specifications

Specification90L120L150L180L210L
Actual Capacity (L) 80.44 ~110 ~140 ~170 ~200
Coil Rating (kW) 15.73 ~18 ~21 ~24 ~27
Coil Surface Area (m²) 0.66 ~0.8 ~1.0 ~1.2 ~1.4
Max Mains Pressure (Bar) 10 10 10 10 10
Operating Pressure (Bar) 7 7 7 7 7
Operating Temp (°C) 60 60 60 60 60
Safety Valve Temp (°C) 90 90 90 90 90
Heat Loss (kW/24h) 1.152 ~1.3 ~1.5 ~1.7 ~1.9
Material LDX 2101 LDX 2101 LDX 2101 LDX 2101 LDX 2101
Coil Material 316L Stainless Steel 316L Stainless Steel 316L Stainless Steel 316L Stainless Steel 316L Stainless Steel
Immersion Heater 3kW 3kW 3kW 3kW 3kW
Warranty 25 Years 25 Years 25 Years 25 Years 25 Years

What's included

Unvented slimline cylinder unit
Factory-fitted indirect heating coil
Temperature & pressure relief valve
Installation and user manual

Shipping information

Standard delivery

1–3 working days

Free over £60

Heavy item delivery

34.5kg unit — pallet delivery, please ensure access

£32.99

Store pickup

GetPlumb Reading store — usually ready in 24 hours

Free

Good to know

  • Tracking details sent by email once dispatched
  • Someone needs to be present to receive heavy items
  • Deliveries to Scottish Highlands and offshore may take longer — check at checkout
  • Installation is not included — see our approved installer network

Frequently asked questions

What is an indirect unvented cylinder? +
An indirect unvented cylinder heats water using an external heat source such as a boiler or heat pump, rather than an internal electric element.
Is the Joule Invacyl suitable for small spaces? +
Yes, the slimline design is specifically made for tight installation areas like cupboards or compact utility rooms.
What type of heating systems is it compatible with? +
It works with boilers, heat pumps, and solar thermal systems.
Does it provide good water pressure? +
Yes, it operates on mains pressure, delivering strong and consistent hot water flow.
How energy efficient is this cylinder? +
The dense PU foam insulation significantly reduces heat loss, improving overall energy efficiency.
Is there a backup heating option? +
Yes, it supports a 3kW immersion heater for backup or additional heating.
JM RH SP
Online now Heating specialists team

Not sure this is the right unit?

Tell us your home size and current setup — we'll confirm the right kW output before you order.

Rated 4.9 for pre-sales support

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