Why should we turn on / off the hot fan manually when you can get a smart home to do this automatically?
In order to automate ventilation in one room based on the humidity, you need two things.
- a sensor for measuring humidity
- the ability to turn a fan on / off automatically
With us, it varies a bit which sensor we use. In those rooms where we want frequent status updates, we use a sensor that is connected to power. The rooms where we do not need as frequent updating, we use battery sensors.
In the bathroom, we have for example, a Aeotec multi sensor that is connected to an AC adapter. Then we can get an update from the sensor as often as we want (seconds between each update).
To control the fan, we simply plugged the plug into a Fibaro wall plug.
As for magic. To do this automatically we must have two automations. One to turn the fan on when the humidity reaches a certain point, and one to turn it off again when the humidity reaches an acceptable level.
The trigger here is that humidity changes on the device. If it is above 54%, then the automation should kick in
To be on the safe side, we have two conditions for this to work. First of all, someone should be home. We do not need the fan to start when we are not home. The second criterion that automation should start, is that it is daytime. We do not want to hear that the fan starts in the middle of the night.
The execution is really quite simple. We just turn on the fan (the wall plug)
So for the second automation – turn off the fan
Here we have two types of triggers. If one of them is met, the automation starts.
When one of the two is true, we perform automation by turning off the fan (wall plug)
