I recently hired a local Heating, Ventilation, & A/C company to complete an energy audit of my home. The purpose of this service & testing is to find out if & where there is energy going to waste. The Heating, Ventilation, & A/C company rep then provided a list of improvements I could make to optimize comfort, air quality & energy efficiency of my heating & cooling systems. One of the most effective options was to add in attic insulation. When taking measures to seal up leaks & cracks in the thermal envelope of the home, I concentrated on exterior walls & windows but never considered the attic. I strongly believe that the attic is properly overheated in the warm season & far too chilly for the Wintertime. Apparently, an insufficient amount of insulation in the attic was letting my heated & cooled air escape. The Heating, Ventilation, & A/C worker told me that a lack of proper insulation in the attic was the cause of drafts in my home, hot/chilly spots, all of the moisture problems, & caused unnecessarily high bi-weekly energy bills. Adding insulation to the attic was fairly low key, caused no mess, & the project was completed in a single afternoon. I immediately noticed a major difference in the level of comfort of my home, & the air conditioner now ran for much shorter cycles. Within a year, I will have saved enough cash on my utility bills to pay for the service. I am now considering an investment into an attic ventilation system which would job to bring in fresh air & remove stale, overheated air. This would reduce dangerous snowmelt & ice buildup on the roof, combat moisture in the home, & go a long way to minimize the heavy workload of the gas furnace & air conditioner.