We have an old two story on a slab with hot water ...

We have an old two story on a slab with hot water heat. David Lieb designed a 5 zone AC system using Mitsubishi. The installers were fabulous. Very unobtrusive, and very innovative in their approach. They even came out to do a final fine tuning of the system. These are great people, great work, and they never tire of doing things the right way, and treating you like you are respected people.