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MVHR (Heat Recovery Ventilation) Ducting & Ceiling Valves


One of the most important aspects of a well planned, low energy MVHR system is the ducting type used.

Careful consideration to the design and choice of installation materials ensures your MVHR system delivers the correct ventilation rate and heat efficiency to your home.

Heat Recovery Ventilation (MVHR) rigid ducting:


The best practice is to use larger diameter, 125mm diameter branch lines and up to 250mm diameter main lines, which can carry the necessary high volumes of air at low velocity (depending on size of system).

Rigid, large diameter ducting is the preferred choice to provide a smooth flow of air with the least resistance, causing less noise (from both fans and air turbulence) and costs less to run. A minimum of 25mm aluminium foil backed wool insulation to ducting in a cold space is essential to retain high heat efficiency and avoid condensation forming in the ductwork.

All Beam Mechanical Ventilation systems with Heat Recovery (MVHR) system have been independently tested at the Building Research Establishment (BRE). As well as ensuring clean, fresh filtered air throughout the home, our ventilation units:

  • Are SAP Appendix Q listed
  • Help improve SAP / BER ratings
  • Comply with all building regulations
  • Are Energy Savings Trus compliant (Axco C units)
  • Are Passive House Certified Component (selected units)

Heat Recovery Ventilation (MVHR) Ceiling Valves:


Visible in every habitable room, it's important that the supply and extract air ceiling valves are of high quality.

Our modern Supply & Extract Valves are manufactured in high quality steel and are designed to not produce down draft, ensuring a comfortable indoor climate.

We have a range of supply and extract air ceiling valves in various sizes, including (but not limited to):

  • 100mm
  • 125mm
  • 150mm
  • 200mm

Our highly cost effective Fire Rated Ceiling Valves meet the requirements of Building Regulations Document B and are easy to retro fit in place of existing valves. Available in 125mm and  150mm options.