They are fairly simple to setup and can probably be done without much intrusion. The components, at least the one I have, there’s not much to it. All the filters and filter housing are screwed onto a thin piece of plywood (it’s all made of plastic so it is flimsy and light in weight. The installer just hung that on the wall in my garage next to my hot water heater. For the water source, he just tapped into the cold water line feeding the hot water heater. Once the water runs through the various filters it accumulates in a 4 gallon thin metal tank for storage. There is another line that will need to feed into a drain pipe. That’s the one that wastes about 6 gallons of tap water to filter 1 gallon RO water.
The way mine is set up is a line runs from the storage tank to my indoor refrigerator. If you have a fridge with water and ice, it’s easiest to just tap into its water feedline and you’re all set for drinking and ice cubes.
If you have room inside your house next to your fridge, you maybe able to put the tank and filters next to it. You just need access to tap a cold water line and a drain water line.