News release: “The Federal Trade Commission warned 14 window manufacturers and one window glass manufacturer that they may be making unsupported energy savings claims for replacement windows. The warning letters are part of an FTC effort to ensure that environmental marketing is truthful and based on solid scientific evidence. Each letter states that the FTC reviewed the company’s website and found claims similar to those challenged in administrative complaints the FTC filed earlier this year against five companies. Those companies agreed to orders barring them from making exaggerated and unsupported claims about their windows’ energy efficiency and how much money consumers could save on their energy or heating and cooling bills by having them installed. The warning letters highlight claims that consumers will save more than 30 percent on their energy or heating and cooling bills by installing replacement windows.”