If you live where summers get hot and humid, you may need more than a fan to keep cool in your workshop. Fortunately, air conditioners will both dehumidify and cool your space — and you don’t need a traditional window to get the job done. Instead of a residential window unit, consider a freestanding portable air conditioner that you can use as needed on hot days.
My shop consists of a 9×16 storage building, with 3 feet being used for actual storage! I have a table saw, 13″ planer, lathe, sliding mitre saw, home made router table, small compressor, 5′ 4 drawer bench with vice, table top drill press, 6″ jointer, band saw, shop vac, wall mounted hand tool storage, clamp rack, power tool storage, and no room to turn around! But I put out a few nice pieces! Recently built, a 48″ entry table from 100 yr old milled poplar, coffee table from the same re milled red oak barnwood, and a little triangle shaped corner table from the left over red oak, a 7′ x48″ bookcase from old poplar, a small wall mounted poplar book case, and am presently working on a queen sized bed with a mixture of 100 yr old oak and new kiln dried oak, with drawbored pegging using black walnut from a tree from my yard! I’ve also made several mallets that I find useful from my firewood pile using Cherry, ash, hickory and white and red oak. Building anything in 108 sq ft is a challenge, but patience determination, and decent sales will make it work! One good point is that nothing is out of reach! Except maybe the bathroom!
Let’s be clear about one thing: No workshop is perfect for everyone. If there were, I could simply give you a precise plan to follow with clear dimensions. Every person who comes to the hobby, avocation, or profession of woodworking has his own particular collection of tools and his own peculiar work style, skills, and desires for the kind of woodworking he wants to do that gives him a unique approach as to how he will lay out a shop: where the tools should go, where lumber and supplies are stored, and how much bench area he needs.