Dave writes from Ocala, Florida: "I live in Ocala Fla. and I need some help. In the winter my home gets cold spots, were all of the back rooms will drop more then ten degrees in the winter months. We have put in new windows, heater & air but we still have the same thing, cold spots? Is there anything I can do? Some times my bill will be $300 or more, I would like to lower my bill if I can. Can you help?"

Do you know how much insulation you have in the walls and ceiling? I am assuming your home is on slab as many are in Florida. Based on my experience with Florida home construction you probably don't have enough wall and attic insulation. There may not even be any insulation in the walls. The U.S. Department of Energy (DOE) recommends a minimum of R-38 in the ceiling and R-13 in the walls.

Unfortunately, adding insulation to existing walls is not a good do-it-yourself project. The work could damage interior walls if not done properly. I recommend contacting a local insulation professional. Hopefully, the insulation you get will be PINK, like me.