(NAWC) Certified HVAC Installer (CHI) The CHI demands precision across refrigerant charge calculations, ductwork design, and electrical schematics—areas where small errors cascade into system failures. You’ll navigate complex scenarios involving load calculations, variable refrigerant flow systems, and code-compliant installations that separate installers who can troubleshoot from those who merely follow checklists. This exam reflects real-world complications installers face daily.
| Exam Name | (NAWC) Certified HVAC Installer |
| Exam Code | CHI |
| Format | PDF & Practice Test Engine |
| Target Year | 2026 Updated |
| Features | 100% Verified Q&As |
