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Message: <blockquote data-quote="Mad Professor" data-source="post: 3629060" data-attributes="member: 5316">I have a 2-ton mini split Trane in my 650 square foot garage that has 10” of insulation in the ceiling and non in the walls. Both of the overhead doors have insulation panels in them. It works great. Returns to temp quickly when I pull a car in or out of it.  I’ve had it about 4 years now. I think 1.5-ton may be a tad small. If mine was any bigger, I would run a split unit that uses a 2-ton outside condenser with two 1-ton inside evaporator/fan units.  I initially was going to install a 1.5-ton, but my friend/installer recommended a 2-ton. The upsize cost was minimal.</blockquote>