I don't know how to code this so I will just tell it like it is. My daughter lives in Savannah, GA and she stays with us 4 days a week in Charleston, SC while she is finishing her BS degree. She is a military wife (Citadel guy) has one child with one on the way. Anyway, we got sports/HBO and they have Max and something else, we both have whole house. She likes to watch the Savannah locals and my wife likes to watch the Charleston locals. Wife will be staying every weekend soon in Savannah, GA. Can I just swap out a unit for a unit and add it on the whole house Deca system? We both have identical HR23's so I was thinking just swap those? No intent to cheat any money, just trying to make two girls in my life happy. And you know what they say: If ...... ain't happy nobodys happy! Sorry to be so long winded.