We have had a Sleep Number for 6 years. One side did develop a leak, but it never went flat overnight. It was replaced under warranty.
If so, we would have purchased a cheap air mattress at WalMart until repairs could be made. It was what we did to "try out" air beds, initially before spending big bucks.
It is not a concern with us.
Our Rig:
2005 Dodge 3500 - Dually- Cummins
2006 Outback 27 RSDS
We also have with us two rescue dogs. A Chihuahua mix & a Catahoula mix.
"I did not get to this advanced age because I am stupid."
Full time since June 2006