- HVAC License Certification in Florida – Florida HVAC Schoolwww.florida.hvaced.com
- United States Department of Laborwww.bls.gov
- HVAC Excellencewww.escogroup.org
- HVAC – World Health Organizationwww.apps.who.int
- Air Conditioning Contractors of Americawww.acca.org
- Air Conditioning, Heating, and Refrigeration Institutewww.ahrinet.org
