Earn a CHD Certification

The CHD certification, an ANSI-Accredited Personnel Certification Program under ISO/IEC 17024 (#1139), 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
Exciting news! Through May 31, use the Discount Code CERT2026 to receive a 25% discount on certification application. Test at one of over 1,000 test center locations.