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Passive House MVHR Range

Manufactured by Dantherm Air Handling, these heat recovery units are certified by the PassivHaus Institute and feature the latest energy saving technology

  • Certified component for Passive House

  • Up to 95% efficiency

  • Integrated humidity sensor

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Approved for Passive houses
  • Lightweight aluminium counterflow heat exchanger
  • High efficiency – up to 95%
  • EC motors with extremely low energy consumption (low SFP)
  • G4 / F7 Pollen filters available
  • Demand-controlled ventilation with integrated humidity sensor
  • Built-in by-pass module ensures automatic fresh air cooling of the house e.g. on a warm summer’s night
  • Installation-friendly solution with adjustment of air volumes directly on the unit
Unit: HCV5 HCH5 HCH8
Passive House Certified Component
Certified for air flow rates 99-220m³H−¹ 99-220m³H−¹ 135-340m³H−¹
Effective Heat Recovery Rate nHR, eff 81% nHR, eff 81% nHR, eff 83%
Electric power consumption 0.27 wh/m³ 0.27 wh/m³ 0.26 wh/m³
Flow (max) 425m³h−¹ 450m³h−¹ 650m³h−¹
Summer Bypass
Control System Demand Control Demand Control Demand Control
Inlet Diameter (mm) 160 160 250
Weight (kg) 57 66 84
Dimension (W x H x D) (mm) 590 x 1055 x 566 1180 x 600 x 580 1180 x 600 x 780
SAP Appendix Q Listed
Condensate Drain Required

The Dantherm HCV/HCH range of MVHR units is supplied with demand controlled automation which doesn’t need to be touched once the system is installed. The control panel has options to adjust individual default settings if special requirements arise.

Demand Control:

Automatic demand control is based on a range of average considerations that guarantee a comfortable indoor climate in all conditions. The RH sensor will seek to keep the relative humidity at a comfortable level regardless of activity levels in the home.

Control Panel:

The 3 push buttons of the control panel give access to:

  • Manual control of ventilation speed
  • Automatic control of ventilation speed
  • Manual by-pass/cooling
Remote control:

The wireless remote control gives the user access to:

  • Automatic demand control
  • Manual operation
  • Week programme operation
  • Away operation
  • Night operation
  • Fireplace operation

An important aspect of a well planned, low energy MVHR system is the ducting type, design and the quality of installation.

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, causing less noise (from both fans and air turbulence) and costs less to run. Foil backed insulated ducting in a cold space is essential to retain high heat efficiency.

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.

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

People we’ve helped

With over 70,000 installations throughout Ireland and the UK, our Heat Recovery Ventilation Systems can be found in all types of homes just like yours.

Residential Heat Recovery Ventilation Projects

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