Adding SLIP™ to the windows in an average household will result in a cost reduction of 72.9% for the windows.
Average Energy Consumption Associated with Heat Gain/Loss of Windows at a Typical U.S. Household:
- Single pane windows…454 THERMS and 474kWh
- Single pane window with added SLIP™…123 THERMS and 129kWh
- Single pane window with SLIP™ and weatherstripping…93 THERMS and 97kWh
A therm is a unit of measurement of energy (more specifically, thermal energy). The therm is used to measure gas consumption as well as consumer cost.
The overall U value of a test window wall assembly reduced 61%, from 0.44 to 0.17 BTU, from the base case to the final configuration. The U value reduction from baseline for each improvement is as follows: 18% for weather-stripping, 15% for wall insulation, 26% for SLIPs, and 28% for the double pane.