THE STEPS
7 ACTIONS · H3 CLASS I CONTRACTORRequired by federal law to legally handle refrigerants. If you already have this from your 6 years in the field, you can skip this step entirely. If not, it's a quick fix — you can study and test online in days.
The NC Board needs proof of your field hours. Gather the following for every employer you've worked under:
• Employer name + contact information
• Start and end dates of employment
• Approximate hours worked
• Signed verification letter from each employer
You need 4,000 hours minimum. With 6 years full-time, you have roughly 12,000+ hours — far more than enough. Be organized; this is what the Board scrutinizes most.
Submit your application the moment your documents are ready. The Board's review takes ~6 weeks, so starting this clock early is the single most important scheduling decision you can make.
Submit to: NC State Board of Examiners of Plumbing, Heating & Fire Sprinkler Contractors
Website: nclicensing.org
Include: Completed application, experience documentation, $100 fee, criminal background check.
The highest-rated exam prep program in North Carolina. Specifically built for the NC H3 Class I and II contractor exams. Schedule this during your 6-week board wait so you arrive at the exam ready to pass on the first attempt.
What you'll cover: State building codes, load calculations, NC Business & Law requirements, exam navigation strategy, open-book technique.
Location: Greensboro, NC (~1.5 hrs from Charlotte — absolutely worth the drive)
Format: 2-day intensive in-person class
Study materials: Book loan available. English + Spanish materials offered.
Once the Board approves your application, you'll receive written notification with instructions to schedule your exam. You must schedule within 30 days of that letter.
Exam 1 — Heating License Exam: 4 hours, open book. Cover HVAC systems, codes, installation, load calculations.
Exam 2 — Business & Law Exam: 90 minutes, open book. Covers NC contractor laws, business requirements, contracts, licensing rules.
Both exams are administered at the PSI Testing Center in Charlotte. Exams are offered daily.
A surety bond is required to activate your contractor license. You do not pay the full $2,000 bond amount upfront — you pay an annual premium which is typically 10–20% of the bond value depending on your credit score.
Shop around: Bryant Surety Bonds, Travelers, and local NC bond providers all offer competitive rates. Good credit gets you the lowest premium.
Pay the $150 license activation fee to the Board. Your H3 Class I Contractor License is now active. You can legally operate an HVAC business, pull permits, bid on commercial and residential jobs, hire technicians, and advertise your services across all of North Carolina.
Next priorities after licensing: General liability insurance (required), commercial vehicle insurance, register your LLC/business entity, open a business bank account.
Leaves ~$5,700+ of your $7,000 for tools, insurance, van, and first jobs.