Labels:hakham | person | sky | tree OCR: Thermal f Performance U-values Impact uo Annual Energy Costs The type of window frame material (thermally-broken aluminum or aluminum-clad wood) has significant impact on the overall annual energy costs for building The following slides show the differenc es annual energy costs for a prototypical condominium project at several locations in the United States Portland Madis son, WI Boston MA Phoenix, AZ Kansas City MO Atlanta GA verall slide diffe annua energs
