Energy-Efficient Window Air Conditioner Ratings Research Project
The U.S. Department of Energy is currently conducting research into window air conditioners for energy efficiency ratios (EER) of 13. Minimum efficiency levels for window air conditioners are currently set at 9.7 to 9.8 EER for most product classes.
This project seeks to develop a high efficiency (13 EER) window air conditioner.
Research is being undertaken through a cooperative research and development agreement (CRADA) between the Department of Energy, Oak Ridge National Laboratory, and a CRADA partner.
The goal of this project is the development of a high efficiency, 13 EER window air conditioner. The average lifetime of window air conditioners is between 10 and 13 years. There is potential for rapid replacement of older, less efficient units (some of which have EERs of 5) making window air conditioners a primary target for reductions in annual U.S. energy consumption.
Benefits and Impacts
Energy savings of 0.07 Quads translates to approximately 7 billion kWh or $800 million (at the residential rate of electricity of $0.115 per kilowatt hour). The assumption is that a 13 EER window air conditioner would cost approximately $60 more with the advanced features versus a typical less energy efficient unit. Based on Oak Ridge National Laboratory calculations, energy costs would be reduced by $15 per year if the higher efficiency window air conditioner is used, resulting in a payback period of approximately 4 years.