Most rooms will be able to be conditioned by one Quilt Indoor Unit, but variability in room size, home size, and regional climate may impact the kind of system configuration that works best.
In California, our general guidance is that a single indoor unit can effectively condition up to 480 sq. ft. of space, while larger or more open rooms would be better conditioned with a second unit. In locations with more extreme climates, rooms may benefit from an additional indoor unit. Your local Quilt Certified Partner can work with you to design the perfect system for your home.