The Internet is full of information on various energy efficient products and technologies. Two main websites provided below, summarize key products and technology that is available for residential use.

• Home Energy Saver. Provides a host of links to practical information, ranging from lists of specific efficient products ... to tips about selecting a good contractor ... to information on what assistance your utility might have to offer.
  
  
• Energy Star Purchasing. The ENERGY STAR Purchasing Web site provides information on purchasing energy-efficient products, reducing energy costs, and preventing air pollution.

Additionally, several organizations have compiled fact sheets on various components of energy efficiency. The links below include information on how to select the best product for your needs.

Solar Energy

• Passive Solar Heating, Cooling and Daylighting, U.S. Department of Energy
• Solar Hot Water and Space Heating & Cooling, U.S. Department of Energy

Heating and Cooling Systems

• Choosing Heating and Cooling Equipment, Southface Energy Institute
• Sizing Residential Heating and Air Conditioning Systems, U.S. Department of Energy
• Automatic and Programmable Thermostats, U.S. Department of Energy

Appliances

• How to Buy an Energy-Efficient Home Appliance, Federal Trade Commission
• Energy-Wise Appliances, Southface Energy Institute

Lighting

• Energy-Efficient Lighting, U.S. Department of Energy
• Compact Fluorescents - Save Money and Prevent Pollution, Southface Energy Institute

Windows

• Window Primer, Southface Energy Institute
• Selecting Windows for Energy Efficiency, U.S. Department of Energy
• Energy-Efficient Windows, Efficient Window Collaborative