I had to replace the spinner and the nose housing on one of mine. Been running since
1994 or so. They do have longevity and use less energy than most other pumps. I now
have a second one for backup. INgrid

On Mon, 2 Jun 2008 10:20:43 EDT, Stephen Henning wrote:
I only have experience with the PondMaster AP-40 air pump. My first one
lasted 3 years and then stopped pumping even though the motor was still
running.