Earn a CHD Certification
The CHD certification, managed under ISO/IEC 17024 requirements for ANSI-Accredited Personnel Certification Programs, validates competency to design HVAC systems to meet building/project requirements, including equipment, equipment sizing, load calculations, mechanical equipment room design, duct and piping design and layout, and develop HVAC plans for permit and construction.
NEW! CHD Study Guide
NEW! Apply by Jan. 7 to sit for CHD exam on Feb. 7 at 3:00 p.m. (EST) at the 2025 ASHRAE Winter Conference