The State of Utah gets "verification" energy audit - starting at the Utah State Capitol North Office Building. This second energy audit using a high volume blower door and thermal imaging cameras confirmed the new R-Plus windows and wall panels reduced the air leakage by 70% over the older single pane windows and wall panels. Unable to alter the outer windows for historical reasons, necessitated the use of the new thermal windows from ProActiveEnergyConcepts These new R-Plus windows are the best windows for older historic state and municipal building retrofitting.    We used a conference room for testing - installing temporary window panels.          Check out the short videos about these new windows Alamo Infrared Episode 119             Alamo Infrared Episode 116       Alamo Infrared ... 07/31/2010