• Flexible solar thermal evacuated tube collectors from kingspan
  • Unique modular vacumn tube collector design from varisol
  • Evacuated varisol tube collectors with high performing solar energy transfer.
  • Heat pipe model allows for easy replacement of tubes without affecting the entire solar system

Varisol is the first solar evacuated tube collector with no rigid manifold offering high performance as well as total flexibility. The revolutionary new design of Varisol offers a modern and flexible alternative to traditional rigid man... Read more


Accredited Installer Network


MCS Approved


World Leading Technology


20 Year Guarantee*

Varisol solar vacuum tubes provide efficient transfer of solar energy for solar water and space heating. Manufactured from high performance polymer materials and designed with ‘click-fit’ technology to create solar thermal collectors which are easier to install, high performing, flexible and are more environmentally friendly.

Features and Benefits

  • Designed and manufactured specifically for European climates
  • Heat Pipe and Direct Flow models available
  • Exactly sized - only pay for what you need (i.e. 25 or 125 solar tube collector)
  • Expandable as needs change - you can grow your solar system with your family
  • Manifold component and tubes pre-assembled 
  • Lightweight and easy to install - no heavy lifting equipment required
  • Suitable for domestic and commercial application 
  • Manufactured from high performance polymer material
  • Excellent customer and technical support available
  • Up to 20 years guarantee (when installed by a Kingspan Accredited Installer)*
  • MCS approved
*T&Cs apply see Varisol installation manual for more information
Dimensions Varisol DF Varisol HP90 Varisol HP135
Dimension (each tube) 1950 x 70.9 x 70.9mm 1955 x 70.9 x 70.9mm 1955 x 70.9 x 70.9mm
Weight (each tube) 2.2 kg 2.13 kg 2.13 kg
Fluid Volume (ltr - each tube) 0.19 0.05 0.05
Min. Slope (degrees) 0 20 20
Max. Slope (degrees) 90 70 70
Temperature Limitation (˚C) N/A 90 135
Zero Loss Collector Efficiency 0.783 0.760 0.780
1st Heat Loss Coefficient (a1): 1.061 w/m2K 1.621 w/m2K 2.112 w/m2K
2nd Heat Loss Coefficient (a2): 0.023 w/m2K2 0.008 w/m2K 0.006 w/m2K