Smart AC Control X
You should definitely make a Smart AC Control X.
Tado X is awesome, but the finishing touch would be automatic dehumidification. Using the air conditioner to dehumidify in the winter is a lot more energy efficient than opening a window. I'd love to be able to set a target humidity level or range, and have you take care of setting the air conditioner to "dry" mode and cycling it on and off.
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