Obi-Wan Kenoi,
I have a house RO system. I installed it myself and it took about an hour. If you have used a screwdriver you can install it your self.
I had to add an external sediment filter and used the installed filter for the carbon block filter.
I wouldn't pay any one to install it, it's too easy. I did not install the float switch as they can fail, also it it is truly a float then you must open the fresh water tank and I feel that can be dicey.
I got all I needed from the Filter Store on line. I talked with the owner Rick for over an hour on installation and parts needed for the install. He was a great help and provided valuable info.
Their address is
www.RVfilterstore.com.
Good luck.
Al Sawyer