# Demand driven ventilation

**URL:** <https://community.homey.app/t/demand-driven-ventilation/4126>\
**Category:** Questions & Help\
**Created:** [November 16, 2018, 10:53am UTC](https://community.homey.app/t/demand-driven-ventilation/4126 "2018-11-16T10:53:29Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Homey070](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/homey070/32/19977_2.png) [@Homey070](https://community.homey.app/u/Homey070)\
**Post date:** [November 16, 2018, 10:53am UTC](https://community.homey.app/t/demand-driven-ventilation/4126/1 "2018-11-16T10:53:29Z")

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After watching a YouTube movie from gadgetruud about demand driven ventilation [https://youtu.be/dBfXTjpPcSQ](https://youtu.be/dBfXTjpPcSQ)  
I was looking for the possibility by mij own ventilation.  
I came to the conclusion that I have a fan on alternating current. A fan on direct current is energie efficient.  
So I am looking for a new ventilator which is compatabel whit homey.  
Is it possible to make the most or all ventilator smart.  
Where do I need to pay attention to by buying a new ventilator?

Maybe there are more people how have made there ventilation smart, and can tell me the brand of the ventilation?

Also there is a difference in connection of the power cable. Perilex and a normal one.  
With Perilex you have a fix controller if I read it right, and by the normal one you have a rf controller.

Is it possible to use this frequency?