Actually the limit is not 6 tuners it is 6 receivers. I am not sure if they will change the limit, but I have 6 receiver on my account right now(4 - 7200, 1 - 522, 1 - 2700) which is 7 tuners. I have somewhat confirmed this theory by asking if it is possible and was told yes. But I didn't have 5 other 522, or 721, or any other dual tuner receivers to activate or I would have tried. This day and age you have a tv in every room. Kitchen, Bedrooms, Bathroom, Garage, and Sheds.