DIY garage mini split work can warm your shop, but fit matters. Check a 15A...

https://rapid-wiki.win/index.php/Mini_Split_vs._Propane_Heater_for_a_Garage:_Which_Is_Safer%3F

DIY garage mini split work can warm your shop, but fit matters. Check a 15A breaker, cold-weather output, line-set reach, wall space, and seals