Our house, built in 2004, has one. We’ve never used it. The closet that has the vacuum in it also has some other equipment and is a bit of an IDF for my home ne

Our house, built in 2004, has one. We’ve never used it. The closet that has the vacuum in it also has some other equipment and is a bit of an IDF for my home network. Strongly considering removing the vacuum unit entirely and using the ducting as conduit per the above comment!