I have been here in the past as a lurker reading about attic fans. I found so much great information on the forum. I'm now having trouble with my 5 yr old Amana gaspack and I couldn't think of a better place to do some research. I am not a HVAC professional but I am a aircraft mechanic so I at least understand everything, but I don't know the fine points. I look forward to interacting with the knowledgeable members of the forum.