billva, thanks for your response. I wouldn't mind running the fan all the time but its too noisy because the ducts aren't sized for the higher CFMs. When running the AC, it is much quieter because the CFMs are set for around 1200. Its been driving me crazy and I'll ready to get some contractors out for sizing a new one. BTW, I do plan on staying here for a while. I'll probably get sticker shock for a new furnace. I'm interested in the Carrier or Trane 2 stage variable system systems.