Air Conditioning - Insulate Ducts?

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frankeu
07-13-07, 03:29 AM
My ducts run through a crawlspace should they be insulated? About 25% of basement has 8 ft ceiling with concrete floor. Rest is crawl space both are open to each other. No partician between them. With a few runs over 30 feet I would think it would be wise to insulate them. All ducts are home runs no main line.
Was thinking of using reflective insulation. ( foil with air layer in between) . Is this sufficient or is there a better insulation?

Thanks for all the advice!!

Frank

gremlin
07-13-07, 06:37 AM
It certainly won't hurt to insulate them and foil/bubble insulation would do a good job, although it can get kind of expensive.