| epa.gov | Environmental Protection Agency |
| aceee.org | American Council for an Energy Efficient Economy |
| lbl.gov | The Home Energy Saver |
| trane.com | Trane Commercial & Residential Air Solutions - Air Conditioning Units & |
| socalgas.com | Southern California Gas Co. |
| searshomepro.com | Sears Home Improvement Products |
| pseg.com | Public Service Enterprise Group |
| pge.com | Pacific Gas and Electric |
| ornl.gov | Oak Ridge National Laboratory (ORNL) |
| goodmanmfg.com | Air Conditioners, (A/C), Packaged Heat Pumps and Central Air Conditioning (AC) U |
| energystar.org | www.energystar.org/ |
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