"Sennin" wrote in message
oups.com...
venturi effect? What is that?

I don't know last service. I moved in 2 years ago. I had a home
inspection done and it seemed ok.


I paid $150.00 for furnace inspection when I bought this house, using the
heating company I'd been with for 20 years. It's got a Goodman furnace,
which some people expressed some doubts about in this forum. The guy found
some installation mistakes, and repaired a couple of duct junctions which
were whistling. I think it was worth it.