I had a guy from a large company....let's call it Awful Rotten Services.....come out today to give me a quick estimate on replacing the furnace in the house I'm about to buy, and he told me that my ductwork was violating city codes. I asked him how exactly they were violating codes, and he replied that there wasn't sufficient insulation. I asked about re-insulating the existing ducts, and he said that I wouldn't be able to find a company to do it, and that I should have it replaced with flex. I'm thinking this was a complete line of BS, and that sheetmetal ducts are fully compliant with code. Right?
PS I called Awful Rotten Services because I want a quick, high, estimate to stick in front of the sellers. I have no intentions of using Awful Rotten Services. I fully intend to find a small/medium size reputable firm to do the work when I get ready to have it done in February or March.