Want heat in your shop? A mini split can help, but size, wire, and wall seals...
https://trevorscoolthoughts.cavandoragh.org/what-is-a-realistic-total-cost-for-a-2-car-garage-mini-split-with-12k-btu-1-800-to-2-500
Want heat in your shop? A mini split can help, but size, wire, and wall seals matter. This DIY guide shows how to pick a unit, route the line set, seal the hole, and check if a 15A breaker will work