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.
- http://www.epa.gov/ozone/title6/609/index.html

Owen Automotive Diagnostic & Repair Centre
- Full service garage located in Toronto specializing in diagnostics and repair of Asian and Domestic vehicles. Contact information provided.
- http://www.owenautomotive.ca/

A/C Mobile
- Automotive air condition diagnosis and service procedures.
- http://autoacrepairs.com

Automotive A/C and Cooling Systems
- Cooling and A/C systems, fuel and heating systems. Informational site.
- http://pennrad.com

HVAC 2000
- Collection of conversion charts and reference diagrams for heating, air conditioning, and ventilation technicians.
- http://www.hvac2000.com

Understanding Your A/C System
- Basic component descriptions to help you better understand your air conditioning system.
- http://www.familycar.com/ac1.htm