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Registered
Join Date: Apr 2002
Location: Houston (Clearlake), TX
Posts: 11,357
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My garage is about 900 sqft and I have a 2 ton mini-split. It keeps it cool but not 'living condition' cool. It's likely not as well insulated as your guest house but I'd still say 2 ton is about right.
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2014 Cayman S (track rat w/GT4 suspension)
1979 930 (475 rwhp at 0.95 bar)
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