Originally Posted by oil pan 4 (Post 59025)

I put in the original post that the whole thing, which means the air conditioning unit and dryer are going out in the garage and that I was going to duct the cool air into the house and the hot air out of the garage.

I intentionally didn't specify if I was going to run open loop or closed loop. Because I don't know if I want to put 2 holes in the wall. But I will most likely run closed loop

I did not mention that the garage is an addition. It is completely sealed off with an exterior door and storm door and exterior stucco wall.
The garage is unfinished and very drafty. There will be virtually no pulling air pushing air from the garage to the house.

Originally Posted by oil pan 4 (Post 59053)

The pushing or pulling air comment refers to unwanted air leakage like you get from running any normal dryer, a single duct portable A/C or a bathroom fan from inside your house.
Running closed loop mean the intended movement of air.
There will be lots of intentional movement of air between the garage and house through the A/C unit, but little to no undesirable or unwanted air leakage or air infiltration.