geothermal system

Eric Hensley works to install a geothermal heating-cooling system at 625 SE 26, in the Las Rosas neighborhood in Oklahoma City, OK, Monday, Feb. 13, 2012. By Paul Hellstern, The Oklahoman
Eric Hensley works to install a geothermal heating-cooling system at 625 SE 26, in the Las Rosas neighborhood in Oklahoma City, OK, Monday, Feb. 13, 2012. By Paul Hellstern, The Oklahoman

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