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Dynair REC DUO 100 – Decentralized Heat Recovery Unit

In-wall, compact decentralized heat recovery unit, available in multiple different lengths from 220 to 1000 mm. Equipped with a high efficiency ceramic heat exchanger, optionally available with a remote controller.
Principle: The REC DUO 100 is a “push-pull” type device, with bidirectional flow. The exhausted warm air warms up the heat exchanger while passing through it in the push cycle, which in turn heats up the intake air coming from the other direction in the pull cycle.

This product complies with the European Union’s ecodesign directive.



  • Remarkably high thermal efficiency ceramic heat exchanger, with up to 90% heat recovery.
  • Ideal for residential applications, where a constant temperature is required in all seasons.
  • Recommended to be installed in pairs, maximizing the system efficiency in single-room or multi-room use cases.
  • Featuring direct discharge, installable into 300 to 500 mm thick walls. (Optionally available for 220-1000 mm walls as well.
  • Suitable for conveying clean air up to 50°C.
  • Very slim and compact front cover, with an aesthetic design.
  • Equipped with G3 class washable and replaceable filters, on both intake and exhaust sides.
  • “Free-cooling” mode without heat recovery, and anti-freeze mode.
  • Complaint with EN 60335-2-80, LVD 2014/35/UE és EMC 2014/30/UE international standards.
  • IPX4 grade protection.
  • CE marked.

Available models:

  • REC DUO 100
    • Continuous operation at idel speed (selectable between 2 at installation).
    • Can be turned into extraction-only mode via the RLS remote (remote sold separately).
    • Maximum fan speed can be set with a timer between 0 and 30 minutes, after which the device automatically returns to idle speed.
  • REC DUO 100 MHY
    • A REC DUO 100 equipped with a built-in moisture sensor, which automatically sets the ventilation level accordingly; when the predetermined level is reached it turns up the fan speed.
    • This version comes with a remote, giving the customer access to the following 7 options:
      • 0 – On/Off
      • 1 – Continuous ventilation at idle speed.
      • 2 – Middle fan speed.
      • 3 –  High fan speed.
      • 4 – Timer for extra high fan speed.
      • 5 – Sleep mode (8 hours of very low noise operation)
      • 6 – Ventilation mode (extraction only / induction only)
      • 7 – “free-cooling mode” (ventilation without heat recovery)

For further details, feel free to contact KOMPEL Kft.