Spacepak and Unico are essentially the same thing, high velocity air conditioning. We usually see them here in century houses with boilers and no room for forced air ductwork. They work well when installed properly, but they are EXPENSIVE.
Good? Bad? I'm the guy with the gun.
Statements made by me are strictly my opinions and do not reflect the opinions of my employer. I am not authorized to make any official statements on behalf of my employer.
Any technical advice offered by me is for educational purposes only, all HVAC related repairs should only be attempted by qualified personnel.