Efficient Performance

What design features of Sprouse products translate to energy-efficiency? Pretty much all of them. From innovative glass packages and technologically-advanced spacer systems to durable weatherseals and vinyl profiles with insulating chambers, Sprouse windows and doors offer peak performance year round. Commonly, U-values, R-values and the Solar Heat Gain Coefficient are the tools used to measure the energy performance of a window or door.

U & R Values
U & R ValuesThe U-value measures how much heat loss or gain can be transferred through a window or door. The lower the U-value, the greater its resistance to heat flow and the better its insulating value. U-value measurements generally fall between 0.20 and 1.20. For windows and doors, a low U-Value means less heat can enter the home during warmer months and less heat is able to escape during colder months. The opposite of the U-value is the R-value. The R-value measures the ability of a window or door to resist heat transfer. The higher the R-value, the greater resistance the window or door has to heat gain or loss. During warmer months, a high R-value means more unwanted heat from the sun is kept out, and in colder months, a high R-value means heated air remains inside. Low E glass can help provide good U- and R-values.

Solar Heat Gain CoefficientSolar Heat Gain Coefficient (SHGC)
The Solar Heat Gain Coefficient represents how much direct sunlight and absorbed heat can enter the home through windows or doors. Typically shown as a value between 0 and 0.87, a lower SHGC value is better. Low E glass will increase a window or door’s performance against solar heat gain.