I have run across a brand new unit that I can get for about $600 below retail price. It would be replacing an existing unit that has given up the ghost. I have tried to find someone locally to install, but they want to sell me a unit and do the installation. None are willing to do installation only. It seems to me that since the wiring, vent, and thermostat already exist, it shouldn't be too hard to hook up, but never having done an installtion on anything other than a window unit, I'm unsure. Is this something a novice can do? Are there any books that would explain the process?