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Mechanical ventilation unit
CWL-F-300 Excellent

The slimline ceiling and wall solution for detached houses.

Lack of space and tight installation situations can make it difficult to install a mechanical ventilation system. For these scenarios, WOLF has developed the CWL-F-300 Excellent slimline ventilation unit. Thanks to its slender design and quiet operation, the CWL-F-300 Excellent can easily be fitted above the ceiling or in narrow recesses. With a maximum air flow rate of 300 m3 per hour, the unit is ideal for ventilating a small detached house.

This unit has a special feature – it uses countercurrent technology. Via a heat exchanger, supply and extract air are routed past each other along separate ducts, causing the warmer extract air to heat the supply air. This saves energy while also enabling an even, continuous air supply.

In summer you can circumvent heat recovery with the help of a bypass, allowing you to cool your house with pleasant night air. Furthermore, the unit is very easy to maintain and is also certified for passive houses.

  • Specification

The slimline ceiling and wall solution for detached houses.

With its exceptionally slender design, the CWL-F-300 enables you to ventilate your detached house efficiently and quietly, without taking up too much space. Dust, pollen and traffic noise are a thing of the past.

  • The unit allows clean, pollen-free, fresh air to fill your home while windows are closed
  • The slimline design enables space saving installation in suspended ceilings or narrow recesses
  • Exceptionally efficient heat recovery
  • The EC fans are extremely quiet and exceptionally power saving in operation
  • Pending filter changes are indicated via the BM-2 programming unit (accessories) and are extremely straightforward
  • An automatic frost stat controller with electric preheating coil is optionally available, for optimum protection against the heat exchanger freezing up 
Model / Performance
  • CWL-F-300 Excellent
Please choose model
Mechanical ventilation unit CWL-F-300 Excellent
Model type CWL-F-300 Excellent


Air handling rate in qm³/h


General Info

Installation type


Application area

Central ventilation unit x
Decentralised ventilation unit -

Living space

Up to 150 m² x
Up to 250 m² x
Up to 300 m² -

Installation location

Wall x
Ceiling x

Combination with

Wall mounted gas boiler -
Oil condensing -
Heat pump -

Passive Cooling with night air


Active air heating via preheating coil (type, in watts)

Optional, elektrisch, 1000 Watt

Ready for humidity and CO2 sensor



Height (mm) 1185
Widht (mm) 644
Depth (mm) 310



G4 coarse dust filters


F7 pollen and spore filters


WOLF SmartSet Ready


wiButler ready

Ab Q4 2016


The ultra-slimline CWL-F ventilation units from WOLF provide a perfect indoor climate without taking up too much space.

We spend around two-thirds of our lifetime in closed rooms. Dust, pollen, odours, a high CO2 level or excessive humidity can negatively affect physical and mental performance. In well insulated buildings, there is also a double layer of thermal insulation and triple glazed windows to consider. Whilst this is extremely energy saving, it also means that your home is difficult to ventilate. In older buildings that have been renovated, this can lead to the formation of mould and moisture-related damage.

A WOLF comfort mechanical ventilation unit is perfect for situations such as these. It automatically ensures the indoor air is fresh and healthy without time consuming and inefficient airing in short bursts. With a controlled mechanical ventilation unit, pollen doesn't stand a chance, so you can finally take a deep breath and relax. Dust and dust mites can also be actively prevented with a ventilation system, resulting in significantly improved air quality. Therefore be sure to include a WOLF comfort mechanical ventilation unit when planning your new build – for a healthy and pleasant indoor environment.