You can build a box around all the units. Usually out of some sort of foam insulation make a hole on the bottom front for fresh air. On the top of back make another hole for exhaust. Run some sort of flexible pipe out window. Problem solved.
Yes this is the super simple explanation but its enough to get you started in searching for the exact design you want. Most do include fans in the exhaust to pull the heat off the asics.
Steve
- Just a note on the "foam insulation" remember you are working with heat. You may want to go with an inexpensive heat insulation and make like a shell be sure to put the tinfoil side facing in. Leave a few inches all the way around the actual unit or units, bottom can be left open, or build a stand and then you can use regular ridged styro-foam to build the enclosure, a little duck tape and some flexible dryer exhaust hose. Decorate your enclosure as you see fit. As Steve said "Problem solved."