Connecticut Limited Warm Air, Air Conditioning and Refrigeration (D-1, D-2) Certification Exam

Connecticut Limited Warm Air, Air Conditioning and Refrigeration (D-1, D-2) Connecticut’s D-1 and D-2 credentials distinguish themselves through state-specific regulatory focus absent in national HVAC certifications. While EPA 608 covers refrigerant handling nationwide, Connecticut’s exam digs deeper into local code compliance, equipment installation standards, and state licensing pathways. Technicians holding both gain competitive advantage? EPA 608 proves refrigerant competency; D-1/D-2 proves you can operate legally in Connecticut’s market and satisfy inspector requirements other states don’t mandate.