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flexoTHERM ground source heat pump

230V and 400V ground source heat pump with Green iQ technology

  • Available in five models covering 5, 8, 11, 15 and 19kW
  • ErP A+++ rated for both hot water and heating efficiency, when installed using VRC 700 controls
  • Dimensions in mm: W 1183 x H 595 x D 600
  • Quiet Mark awarded as one of the quietest heat pumps available*


*Excludes 230V range

flexoTHERM is a high performing ground source heat pump that can be specified in a wide range of social housing and new build properties to provide efficient generation of heating and hot water.

This heat pump is suitable for developments where adequate space is available to incorporate a ground collector or borehole system where space is restricted.

Green iQ products are not just extremely energy efficient but combine eco-friendly heat generation with smart, future-proof functionality. flexoTHERM with Green iQ is ‘internet-ready’ to accommodate future enhancements and smart functionality such as energy monitoring and maintaining optimum efficiency.

Features and benefits:

  • Available in 230V and 400V:
    • 230V heat pump is available in 5, 8 and 11kW models
    • 400V heat pump is available in 5, 8, 11, 15 and 19kW models
  • More power, more efficiency - Integrated EVI super compressor, injects additional refrigerant into the compression cycle
  • Exceptionally quiet - With noise levels as low as a modern refrigerator - 42dB(A), flexoTHERM has earned the ‘Quiet Mark’ approval (excludes 230V range)
  • High quality and sustainable - Green iQ technology aids in future-proofing the product and ensures optimum efficiency, performance and sustainability
  • Ability to cascade up to seven flexoTHERM heat pumps - Suitable for larger dwellings and developments
  • Extended capabilities and flexibility - Modular design gives flexoTHERM greater sustainability and flexibility with accessories to enable connection to either air or water sources



Technical dataUnit5kW 230V8kW 230V11kW 230V5kW 400V8kW 400V11kW 400V15kW 400V19kW 400v
Minimum flow temperature heating °C2525252525252525
Maximum flow temperature heating with compressor°C6565656565656565
Nominal flow rate ∆T 8Kl/h6009301290570980124016002180
Energy-related Product 35°C*BandA+++A+++A+++A+++A+++A+++A+++A+++
Energy-related Product 55°C*BandA+++A+++A+++A+++A+++A+++A+++A+++
Product dimensions (H x D x W)mm1183 x 595 x 6001183 x 595 x 6001183 x 595 x 6001183 x 595 x 6001183 x 595 x 6001183 x 595 x 6001183 x 595 x 6001183 x 595 x 600
Weight, ready for operationkg157173185151167175187200

*Reported efficiency when used with VRC 700 / VRC 700f controller