I really struggle with using Rule Machine...I feel like it has a steep learning curve for some reason.
Anyways, I have a PurpleAir Sensor (integrated with HE already) to measure the air quality in our house. When one of the values reaches 45, I want to switch on our ERV (it's already a switch in HE). I then want it to turn off when the value reaches 15. I don't want it to turn off if the Master Bathroom fan is on however. (I have a rule that turns on/off the ERV according to that switch state.
Should I combine these into 1 rule? How would it look? The custom attribute used for the sensor will be