I had my duct work insulated. The seams were sprayed with a product by Dow - called great stuff for gaps and cracks, and then the ducts were wrapped with insulation. Since then, I can't use the system due to a terrible chemical smell when it comes on. I called Dow and they said the product max temperature rating is 240 degrees. The insulation company tells me this is not the problem. Can you tell me if it is the problem?
Thanks for your help.