I really wanted to go in the garage so I could have a storage bin, but no drain for waste.
Sorry about the hijack ynnho.
My RODI unit is in the house where there is a drain, and I run tubing to the garage in two places where I have storage bins, and then again from the RODI to the fish tank, all in wall. It's not very hard to do, just like fishing an electrical wire or speaker wire. I guess you could also put the unit in the garage, and run a tube to the drain in the house...or run the drain into a storage container you could use for irrigation directly from the garage!