If so, your attic insulation probably isn't up to par..

The attic is most often the most insufficiently insulated part of your home, making it typically the biggest source of energy loss. When an attic is not properly insulated, conditioned air is lost quickly resulting in your home being more difficult and expensive to keep comfortable during the winter or summer. Without proper insulation, heated interior air naturally rises and escapes into the attic through air leaks during the cold winter months. This makes rooms directly below the attic even colder. Alternatively, in the summer, as the attic temperature rises, the heat moves into your living spaces, making those spaces, typically bedrooms, hotter and more difficult to cool. A poorly insulated attic also contributes to the formation of ice dams, icicles and mold growth, causing safety hazards and health issues .

Insulation levels and thermal performance are measured by R-Value. The higher the R-value, the better the insulation's ability to resist heat flow. The U.S. Department of Energy recommends that most homes in New York have between R-49 and R-60 of attic insulation, depending on the insulation material. It is also recommended homes in northern climates have 16-18 in. of attic insulation, but many homes have as little as 9 in. In fact, 90% of homes are under-insulated according to the Insulation Institute. Even newer homes, built to local building codes are far below what home performance industry experts recognize as necessary, because the codes only stipulate minimum performance standards. This is why most homes are lacking proper insulation, and homeowners are dealing with uncomfortable temperatures and the high expenses of heating and cooling.