Sounds nice and I have something like that installed in Spain. But in Spain nobody cares for a permission and the cost of everything was probably like the cost of the permission needed in Switzerland; for air conditions the cost of the permission is higher than the cost of the A/C.
I had it checked many years ago in Switzerland and they said I can’t go down because of some drink water source close to my land. And for just air it is probably a bit much.
It is ridiculous; they tell you what to do and then you need a permission to do it. And you have to pay and pay. And wait and wait. And then pay more.
Why can’t they just let me in peace?
I probably have to do it anyhow and hopefully there are solutions now that do not interfere with the drink water sources. But I really would not like to spend my energy and the little time left on earth with bullshit like construction just to have place to sleep and shit.
Back to topic: probably I won’t bother if I cannot deduct it from tax. I can spend the winters somewhere nice and warm with that money for the rest of my life…
So yes, there will be less maintenance of houses in Switzerland if the tax change goes through.