"Nobody Does Geothermal Like ClimateMaster" HVACR Magazine
Aug. 2011

"David Pergel, ClimateMaster, Inc."
Water Well Journal March 2011

"Alternative Energy"
Energy Effiicient Homes 2011

"Ohio home's geothermal system reduced electric use by 90%"
PHC News May 2011

"Green Movement Energizes Growth at ClimateMaster" Southern PHC April 2010

"New Strip Mall Utilizes Water-to-Air
Geothermal Systems" HPAC Engineering
December 2010

"Yates helps turn log
home green Part 2" Contractor December 2009

"Geo-to-Radiant Retrofit" Home Power December 2009 / January 2010

"Yates helps turn log
home green Part 3" Contractor January 2010

"Historic Minneapolis Building Reborn" HPAC Engineering September 2009

"The Re-Greening of a
Mountain Home" Southern PHC Magazine November 2009 

"Yates helps turn log
home green Part 1" Contractor November 2009

"Nebraska's first 'geo' neighborhood" PHC News July 2009

"Tax Incentives for Geothermal" Engineering Green Buildings July 2009

"Thermal Energy Transfer" Plumbing Engineer July 2009