Pax Passad 31


Passad 31 with humidity control, light sensor and back draught shutter. Mounted in ducts that don’t have a natural draught (external wall).

Humidity sensor

Timer function via presence sensor

Manual via switch, with or without delay time

With backdraught shutter

Ersätter Pax 231

Pax Passad 31, with backdraught shutter*, is installed in ducts that do not have a natural draught (external wall). Used primarily as reinforcement for ventilation in homes with another existing system for basic ventilation, e.g. mechanical exhaust ventilation (but via own duct). The fan starts via adjustable presence sensor, or when the moisture level exceeds the set value. 
* NB: A backdraught shutter is immediately harmful if the fan is installed in a ventilation duct with natural draught (for example in ceilings).

Experience and smart technology 
We have developed the Pax Passad series so you can easily find a model that ensures ventilation in your home. 

Carefree use 
A Pax Passad fan is primarily intended to amplify the exhaust air flow in homes with natural ventilation. They are very simple both to install and use. Enough space in the frame part helps the installer’s job and cleaning is done with one simple operation, without any need for tools.
The fans’ smart functions give you care free ventilation and automatically help your house to “breathe” when it is needed most. The result is an indoor environment that makes both you and the house feel good! 

The distinguishing features for all fans in the Pax Passad series are that they are extremely quiet, highly efficient, made from environmentally friendly material and have negligible energy consumption. The fans are obviously approved for installation in wet areas.

Secure - Safe - Environmentally friendly 
The Pax Passad series is manufactured in materials selected with a very low environmental impact. The fans are obviously recyclable. Pax Passad is an environmentally recommended product by Sunda Hus, among others. 
For your safety, every single Pax fan undergoes very thorough quality and safety tests. To emphasize the quality awareness, we offer a five year warranty for Pax Passad.

Pax Passad
1. dB(A) 3 m value 27,9
2. Efficient, 95 m3 / h free blowing
3. Easy to install and use
4. Energy efficient, max 5 W
5. Environmentally friendly, completely recyclable
6. Safe - every single fan is quality and safety tested
7. Developed and manufactured in Sweden
8. 5-year warranty.


Article codes

Art no:
EAN 13:


Channel dimension Ø :
100 mm
Product Width:
172 mm
Product Height:
210 mm
Product Depth:
142 mm
Product Weight:
0.6 kg


Humidistat, Light sensor, Timer, Switch live
Installation Type, Wall, Celing Etc:
Horizontal, Vertical
Maximum Pressure:
25 Pa
Free To Air Max (m3/h):
95 m³/h
Max Watt(W):
5 W
Supply Voltage (12V-400V):
230V AC
Electrical Supply Phase:
Insulation Class:
II (shall not be protectively grounded)
Type Of Motor:
Protection ( Ip ):
IP 44
Plastic Material Detail:
Maximum Operating Temperature:
35 °C
Minimum Operating Temperature:
5 °C
Environmental Certificate:
Warranty Number Of Years:
5 years
  • Total: 5
  • Total: 5

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