More Online Resources

Energy efficiency:

• ENERGY STAR®
• Residential Energy Services Network: HERS rating information
• The Energy Conservatory: Diagnostic Tools to Measure Building Performance
• U.S. Department of Energy: Energy-Efficient Products
• Iowa Energy Center
• Energy Center of Wisconsin
• Wisconsin Focus on Energy

Trade organizations:

• American Society of Refrigerating Engineers (ASHRAE)
• Association of Home Appliance Manufacturers (AHAM)
• Gas Appliance Manufacturers Association (GAMA)

Geothermal:

• Iowa Heat Pump Association
• Wisconsin Geothermal Association