U value - by Hezikia

Do you know what your U-value is. The U value is the rate of heat loss through objects such as a house. The higher your U-value the more heat is lost. Old office bulidings are especially efficeint this way. Since they were bulit in times before air conditioning they were built to have a low U-value. Some office buildings today are being built to have a low U-value. These techniques include deeper widows to allow less light in. Also thicker walls made out of substances like concrete.