ABC Inspections & Duct Testing is a third party IECC energy code compliance company. The IECC energy code became a state law in 2000, and most cities in Texas require a third party inspector certified by IECC and the State of Texas to perform these plan reviews and on-site inspections.. Daily Office Operations Examination of constructions plans and consultation with builders,architect s and building owners concerning implications of and or requirements for compliance with the International energy code.