AHR-110 – HVAC Fundamentals

AHR-115 – Refrigeration Principles

AHR-120 – Electricity for HVAC

AHR-130 – Air Conditioning Systems

AHR-140 – Heating Systems

AHR-150 – Duct Design and Airflow

AHR-210 – Commercial Refrigeration

AHR-220 – EPA Refrigerant Certification and Controls