We had the same kind of problem with our bed, called comfort aire, explained our problem to the nicest rep and she sent out a new pump and hoses. Funny thing when we got the old pump out and hooked it up it worked fine. In mounting the new one, he decided to mount it upside down to what the original, mainly cause it seemed to run quieter. Ours was mounted in the back of the side drawer beside the bed and it had to be mounted on it's side, rather than sitting flat. We wondered if that was part of the problem with the pump not working. Who's knows..we will use the new one and if it fails, might try mounting it under the bed where it can be flat.