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CHD – Certified HVAC Designer

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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

  • CHD Advantage ▼

    Why HVAC Designers Pursue the ASHRAE CHD

      • Elevate your reputation and career opportunities >> See survey data
      • Demonstrate competency in critical HVAC design knowledge and skills >> See who’s a CHD
      • The CHD digital badge guarantees enhanced recognition
      • ANSI National Accreditation Board (ANAB) accredited personnel certification program, under ISO/IEC 17024 (ID #1139), ensuring fairness and validity

    Why Employers Support the ASHRAE CHD

      • Recruit the most-qualified professionals
      • Elevated reputation and credibility among current and potential customers
      • Provides clear, value-added professional development goal
      • Greater employee job satisfaction and higher retention
  • Check Eligibility ▼

    Eligibility Checklist

      • Education and Work Experience
      • Code of Ethics
      • Pass CHD Certification Exam

    Download a Candidate Guidebook to learn more.

    Key Policies

    Review key policies related to Request for Special Accommodations, Impartiality, Certification Complaint Process, Appeal of Certification Denial, and Guidelines for Suspending, Withdrawing or Reducing the Scope of Certification.


    These Certification FAQs can help. Please call 678-539-1105 or email with any additional questions.

  • Apply Now ▼

    APPLY for CHD

    Application Fees

    ASHRAE Member: $495
    ASHRAE Developing Economies Member: $295
    Non-member: $745
    Corporate Group: Email Tim Kline or call 678-539-1181 for a quote.

    Note: Non-native English speakers may apply to receive an additional 30 minutes of testing time.

  • Testing ▼

    ASHRAE offers certification examination year-round.

    Approved Certification Candidates may schedule their exam at a computer-based testing location.

    Exciting news!  ASHRAE's new exam delivery partner offers over 1,000 test center locations worldwide, which will meet growing demand for ASHRAE certification. 


    These Certification FAQs can help. Please email or call 678-539-1105 with any additional questions.

  • Get Exam Ready ▼

    Get CHD exam ready by following these few, easy steps:

    • Requesting an Extension

      To request a 45-day extension of the 90-day deadline to schedule and take an exam, candidates must submit an application at least five business days prior to the end of the 90-day deadline. The administrative fee to initiate the extension is $50.00.

      Apply for extension


      These Certification FAQs can help. Please call 678-539-1105 or email with any additional questions.

  • Recertify ▼

    Recertify Now

    Recertification every three years helps ensure CHDs maintain a level of continuing competence through acceptable professional development in subject matter related to their certification.

    Application Fees

    ASHRAE Member: $245
    ASHRAE Developing Economies Member: $145
    Non-member: $375

    Eligibility Checklist

      • Participation in One HVAC Design or Design-Assist Project
      • Thirty (30) Professional Development Hours (PDHs), 15 of which may be earned through work experience
      • Code of Ethics Agreement

    Note: Acceptable evidence of professional development hours (PDHs) earned is supporting documentation issued by a third-party, which includes the name of the certificant and the date earned. In the case of continuing education, supporting documentation also must include the number of clock hours of participation, and a title indicating the subject matter.


    These Certification FAQs can help. Please call 678-539-1105 or email with any additional questions.

Learn More about the CHD Advantage

Learn how ASHRAE Certification Digital Badges are a verifiable and powerful representation of your certification achievement.

The Value of ASHRAE Certification – CHD

Hear Mike Fullerton tell his story.