ductless

First time posting! Please pardon my newbishness. I'm starting to do some research into adding air conditioning to an 1100sf floor-through old construction (1910) condo in NYC (11206). The building's steam central heating is sufficient and I don't see any need to add more heat. What I do want...

I'm in the process of adding a second floor onto my 1954 cape and would like to add AC to the house via mini splits. The research I've done so far as well as the estimates I've received has left me with a design showing the following: First unit (2 heads): Upstairs master bedroom (200sqft, 9'...