CERTIFIED HVAC DESIGNER (CHD) The CHD demands rigorous grounding in thermodynamic principles, ductwork sizing algorithms, and load calculation methodologies that separate casual technicians from engineering-minded professionals. Expect intricate scenarios involving variable refrigerant flow systems, psychrometric chart interpretation, and code compliance across multiple jurisdictions—material that weeds out unprepared candidates and rewards those who’ve invested serious study time.
| Exam Name | CERTIFIED HVAC DESIGNER |
| Exam Code | CHD |
| Format | PDF & Practice Test Engine |
| Target Year | 2026 Updated |
| Features | 100% Verified Q&As |
