Product code: H001152

UK Cylinders Flowcyl Slimline Unvented Heat Pump Cylinder 120L FCHPS3120

Compact 120L slimline unvented cylinder for heat pumps. Ideal for tight spaces, with high-efficiency coil and low heat loss. UK-made for reliable performance.

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  • 120L slimline unvented cylinder for heat pump systems
  • Only 475mm wide for smaller homes and apartments
  • 12mm sensor probe pocket
  • High-efficiency coil for fast heat recovery
  • Indirect configuration – no direct immersion primary heating
  • Factory-fitted insulation for minimal heat loss (ERP Band B)
B
£894.84 excl. VAT
£1,073.81inc. VAT


Available


Description

Maximise performance in tight spaces with the UK Cylinders Flowcyl Heat Pump Slimline Unvented Cylinder – 120L (FCHPS3120). Specially designed for air source and ground source heat pumps, this compact cylinder combines a slimline footprint with a high-efficiency coil, making it ideal for apartments, smaller homes, or retrofit installations. Built to the highest standards in the UK, the FCHPS3120 offers excellent heat transfer, low standing heat loss, and long-lasting durability. With factory-fitted insulation and premium components, this ERP-rated unvented indirect cylinder supports reliable, energy-efficient hot water delivery—even in space-restricted plant rooms. Perfect for sustainable heating systems where space and performance both matter.

For system suitability and compatibility advice, please contact Oceanair for more details.

  • 120L slimline unvented cylinder for heat pump systems
  • Only 475mm wide for smaller homes and apartments
  • 12mm sensor probe pocket
  • High-efficiency coil for fast heat recovery
  • Indirect configuration – no direct immersion primary heating
  • Factory-fitted insulation for minimal heat loss (ERP Band B)
  • Designed and manufactured in the UK
  • Compatible with air source and ground source heat pumps

Product Contents: • Stainless heat Pump cylinder • Cold water inlet set • Two port zone valve • High limit stat • Tundish • 3kW immersion heater • T & P relief valve • T & P cover • Expansion vessel and bracket

* See Technical Attachments for more precise parameters and conditions.

Specification

Brand UK Cylinders
Colour Silver
Compatible with Compatible with Air Source Heat Pumps. Contact Oceanair for more details.
Coil Surface Area 1.61 m2
Coil Rating 23.46 kW
Connection Type 22mm compression fittings as primary connection to the coil.
Direct/Indirect Indirect
Standing Heat Loss 52 Watts
Energy Rating B
Manufacturer's Model No FCHPS3120
Manufacturer Guarantee / Manufacturer Warranty 25 years cylinder, 2 years parts (T's & C's Apply)
Material Duplex Stainless Steel
Mounting Orientation Vertical
Power Rating (Watts kW) 3kW Immersion Heater
Product Height 1228mm
Product Width 475mm
Range Description Flowcyl
Suitable for Renewable Energy Systems Suitable for Renewable Energy Systems
System Suitability Suitable for Domestic Use.
System Type Suitable for use with Air Source Heat Pump Systems only.
Tank Capacity 120L
Vented/Unvented Unvented
Type Air Source Heat Pump Hot Water Cylinder

Visit your local branch or contact us for more information.

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