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FurnaceHeatExchanger.com founded in 1995 by Tom O’Connor and represented by Shamrock Indust. From The InspectorTM Heat Exchanger Inspection Camera to the Focus on Finding Failure class to the Documentation Book of Heat Exchanger Failure and Homeowner’s Guides, Shamrock Industries has continued to provide the best products and training to HVAC technicians and has stood behind these products for over 15 years.