I was convinced by my contractor to install one in a new addition, because he installed a flat roof (recommended) and later reliazed he was not able to put in ducts. The biggest concern I have is the fan on the unit will not turn off. If the AC or heat is on the fan is on. Even once it reaches temp, the fan stays on, and it is not that quiet.
I am troubled by this an wonder if I am the first to have this problem?