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Low Cost.

Copper Industries SolarSyphon Closeup

Solar Syphon

Eco-Friendly. Low Cost.

The SolarSyphon is a lower cost installation alternative to traditional twin coil solar cylinders and provides faster hot water as well being eco-friendly.

This innovative hot water system, which can be easily connected to your existing hot water cylinder, delivers solar heated water straight to the top of your hot water tank where it then stratifies, is stored at high temperature and is ready for immediate use.

Hot Water No Matter The Weather

Regardless of the weather, the Solasyphon can produce useable hot water, with only one hour of sunshine generating one hour’s worth of hot water for the end-user.

No replacement cylinder is required and due to this straight-forward installation process, the existing plumbing system in a building will not be interfered with.

Copper Industries SolarSyphon Closeup

Benefits of using the Solar Syphon

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Easy to install

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Faster hot water

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Cheaper costs for end user

SolarSyphon Hot Water Cylinder
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Cheaper installation costs

100% recyclable


Why Choose Copper?

Recycled copper meets 42% of the European copper demand, using only 15% of the energy required in extracting new raw materials, making it sustainable, environmentally friendly and the most recycled plumbing material available today.

Copper also has a long and established history of being used in conveying clean, safe drinking water because of its natural antibacterial properties and inherent health benefits making it a well trusted, tried and tested material for water supply and storage.

(Adapted from: UK Copper Board)

Copper is a well-known, trusted, corrosion resistant. With great benefits.


Recyclable material
Health benefits

Tech Specs

  • Shell height 800mm
  • Overall height (with connections) 1000mm
  • Shell diameter 75mm
  • Overall diameter (with insulation jacket) 12mm
  • Primary fluid capacity 0.5lt
  • Heat exchanger surface area m2/lit secondary water content 0.5 m2/lit
  • HMax working pressure 5 bar
(Adapted from: UK Copper Board)



When empty


When full

Cylinder details:

  • Flow (Indirect only)
  • Return (Indirect only)
  • Pressure reducing valve
  • Check and expansion valve
  • Temperature & pressure relief valve
  • Tundish
  • Immersion heater
  • Thermostat
  • Cold feed tube (not supplied)
  • Hot water outlet
  • Flexible hose
  • Secondary return 1/2 BSPF Conex 645 tee piece (not supplied)
  • Comissioning valve
  • Combined cold feed elbow and drain cock
  • Cable entry
  • Electrical boxes
  • Tee piece
  • Discharge pipe (not supplied)
  • Motorised valve (not factory fitted)


450 litres – 1800 x 600mm 1100 litres – 1900 x 900mm
600 litres – 1800 x 675mm 1250 litres – 2175 x 900mm
700 litres – 2150 x 675mm 1400 litres – 2400 x 900mm
700 litres – 1700 x 750mm 1400 litres – 1800 x 1050mm
800 litres – 1950 x 750mm 1800 litres – 2300 x 1050mm
900 litres – 2200 x 750mm 2000 litres – 1950 x 1200mm
1000 litres – 2400x 750mm 2300 litres – 2250 x 1200mm
1000 litres – 1750 x 900mm 2500 litres – 2450 x 1200mm

All of our cylinders can be customized to suityour needs. As well as our award-winning range of products, we also offer a custom 3D CAD design service allowing your exact specifications to be met.