Connecticut Limited Warm Air Air Conditioning and Refrigeration (D-1 D-2) Connecticut’s D-1 D-2 credential assesses your command of EPA refrigerant regulations, pressure-enthalpy diagrams, and evacuation procedures specific to warm-air systems. You’ll need solid grounding in superheat and subcooling calculations, along with troubleshooting low-charge and non-condensable contamination scenarios that plague field technicians daily.
| Exam Name | Connecticut Limited Warm Air Air Conditioning and Refrigeration (D-1 D-2) |
| Format | PDF & Practice Test Engine |
| Target Year | 2026 Updated |
| Features | 100% Verified Q&As |
