I have an 809 sq ft stand-alone room with concrete slab and block walls that needs to have AC and heat. We have windows on all sides, 8' ceilings, and live in Florida. The room will be used as a dog kennel and office.
We're looking at ductless AC units and can't figure out if using one system is as efficient as using a mini-split system.
I would also like to know if using a 24,000 BTU system is sufficient.