645 Louisiana (New Orleans) Third Class Stationary Air Conditioning Louisiana’s Third Class Stationary Air Conditioning exam (645) covers refrigerant recovery and recycling procedures, pressure-temperature relationships in cooling systems, electrical safety protocols for stationary units, and troubleshooting compressor failures. You’ll review EPA regulations on ozone-depleting substances, piping installation standards, and the thermodynamic principles governing heat transfer in confined commercial spaces.
| Exam Name | 645 Louisiana (New Orleans) Third Class Stationary Air Conditioning |
| Format | PDF & Practice Test Engine |
| Target Year | 2026 Updated |
| Features | 100% Verified Q&As |
