HVAC ducts in crawl space
I am a homeowner who is very much involved in the building of my home. The house is on a 4 ft crawl space. The ductwork for the first floor HVAC is running in the crawl space. Since the ceiling of the crawl space is flat I presumed (my fault) that the HVAC contractor was going to run rigid sheet metal piping. I just discovered he has run flex piping to all the registers and for the returns. I think this is a very poor job since there is going to be so much resistance to the air flow. I would like an expert opinion on this because I have to question the HVAC contractor on his wisdom on doing this and I am going to meet with a lot of resistance. So I need to be able to show him some authentic proof that what he did was not appropriate. I need help fast. Appreciate all responses! Thank you SO much!
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