Thanks for the info I think I will try to find a new one and then I can repair the old one and have a spare. Lennox sure isn't helpful when I called the customer service guy he said they didn't know where I could find one. I told them I had replaced this 7 years ago and couldn't believe it went bad again, he didn't seem to care. He did say if the tank was leaking they would replace the unit. So far no leaks.