Losing Heating, Cooling through leaky or uninsulated ductwork? Maybe you have older ductwork that needs to be cleaned to remove allergens, dust,dander and other contaminates?I have solutions for all these problems. 25 years of installing and maintaining energy efficient duct systems. Full Duct Cleaning and Ductwork installation services. Sealing, insulating. Ductwork is all I work on.Satisfaction guaranteed. Call Alvin @ Forced Air 207-337-0620 P.S. There is no licensing for Ductwork in Maine or Nh. Experience is the Key