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Blaufast Round Insulated Heat Retaining Circular Ducting Coupler for MVHR Heat Recovery Ventilation Systems

Order before 3pm for next-day UK delivery.
As low as £14.19 £11.82
 In stock

Model Features:

  • Designed to be used for all ventilation and MVHR systems.
  • Exceptional thermal heat retention and thermal bridging characteristics.
  • Air leakage tested to ATC 1 and low heat conductivity to λ=0,029 W/mK.
  • Supplied in 125, 160 & 200mm round sizes.
  • Easy, push fit connections to MVHR unit and duct fittings.
  • Suitable for use on any ducted MVHR ventilation system.

Blaufast Thermally Insulated Ducting is designed for use with MVHR heat recovery ventilation systems. It is also suitable for any other centralised ventilation installations including Passivhaus systems and high energy performing buildings, due to its low thermal conductivity and ability to retain heat. It is also robust, extremely easy to install, with simple push fit connections that provide an airtight seal.


Use to connect from an MVHR, heat recovery ventilation unit to outside, as this dramatically reduces thermal bridging, further enhancing the energy efficiency of the system. Blaufast ducting can also be used as main ducts coming from the unit to supply & extract grilles, positioned around the home. Blaufast insulated ducting can also be installed on semi rigid radial duct systems connecting from a ventilation unit distribution boxes.



Three common duct diameter sizes are available:  125, 160 & 200mm. Additional adapters are available to marry up with European sizes such as 150 & 180mm diameter.



Durable and rigid material with smooth interior wall  removes the risk of deformation of the duct during installation as well as reduces by half the pressure drop in comparison to flexible preinsulated ducts. This ensures a silent and cheaper operation.




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Blaufast Round Insulated Heat Retaining Circular Ducting Coupler for MVHR Heat Recovery Ventilation Systems