Have you ever had the ducts cleaned? If you found a crushed section it's possible there's lint and who knows what else in the ducts. ;) When I bought mine I had all the ducts cleaned before I first turned on the furnace in the fall. I couldn't believe what the guy vacuumed out of there, it filled a ...

I have a Nordyne M1MB 077a (A/C ready, up to 3 ton.) While I don't have central A/C yet, I do have a couple small window A/C units. I thought maybe I should run the furnace fan to circulate it through the house, and what do you know, it does make a very noticable difference. I had to hook up the gre...