Insulation is an important factor in keeping your heating and cooling costs down.  The higer the R value of insulation, the greater its resistance to heat flow.  The higher its resistance to heat flow, the greater its ability to keep heat inside your home in the winter and keep it outside in the summer.

The insulation in your home should meet or exceed these values:  walls R-13, floors - R-19 and ceilings R-30.  Your ductwork should have a minimum R-6 insulation (2.5 inch duct wrap), and all joints and seams in the ductwork should be tightly sealed.