A/C Mobile: Automotive air condition diagnosis and service procedures.
Auto Air Basics: A few things to know about air conditioning theory of operation
Automotive A/C and Cooling Systems: Cooling and A/C systems, fuel and heating systems. Informational site.
HVAC 2000: Collection of conversion charts and reference diagrams for heating, air conditioning, and ventilation technicians.
Jbabs Do It Yourself A/C Repair: Drive more comfortably by doing it yourself. Includes how to change over from R-12 to R-134 freon.
Owen Automotive Diagnostic & Repair Centre: Full service garage located in Toronto specializing in diagnostics and repair of Asian and Domestic vehicles. Contact information provided.
U.S. EPA: Motor Vehicle Air Conditioners: Fact sheets for consumers and technicians related to the 1997 rule governing substitutes for CFC-12 refrigerant in MVACs.
Understanding Your A/C System: Basic component descriptions to help you better understand your air conditioning system.