Salisbury: George Hurley of Atlantic Green Energy in Seabrook, uses a heat lamp and BTU detector to measure heat loss through various window types, using double-paned glass here, and his company's Solarize Reflector held to the right which keeps in more heat in winter by absorbing sunlight. He was at Seacoast and Business Green Expo held at Tupelo Music Hall at Salisbury Beach. Bryan Eaton/Staff Photo

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