re: Portable A/C unit in garage; Need help with the exhaust tubing

I would have to agree with the mini split. Most models are heat pumps so you would have heat also. I have put in several of the ones off the internet. Have had really good luck with pioneer brand. Only problem I have found is getting parts for them compared to buying one local. I stopped installing ones off the internet for customers around Covid because of lead time on parts. This may be better now. Can’t go wrong with a Mitsubishi but they are a little more expensive.

One option we have done for a customer on a portable unit is to cut a 4” hole in the wall and put a dryer vent cover on it. Makes for a clean, ordinary look on the side of your house and the hose just hooks up like your dryer would when in use.