[razerwire]

Used the same units as the house, split system. Garage is 2800 sq. ft. so I went with two units, one 5 ton and 3 ton. 5 ton unit does part of garage thats 14' high and 3 ton does bathroom ,dirty room and office, that way can just cool part I will be using. Would put output vents high and return down low, works very well in 14' high part of garage. You can feel the air movement and will drop air temp fast. Put unit 1/2 in attic and 1/2 on ground just like house unit.