How to Start an HVAC Business in North Dakota: No State License, City Mechanical Licenses and the Fargo-Proctored Reciprocity Exam at $40 Journeyman and $125 Master

If you searched for an hvac license north dakota, the most useful answer is this: the state does not issue one. North Dakota has no HVAC chapter in NDCC Title 43, and its plumbing statute does not cover heating work. What you will actually deal with is a set of city mechanical and fuel-gas licenses, a reciprocity exam proctored by the City of Fargo, a federal refrigerant certification, and the ordinary business filings with the Secretary of State and the Office of State Tax Commissioner. This guide covers them in the order most new operators need them.

Disclaimer: This article is informational content, not legal or tax advice. City requirements, fees and state rules change. Confirm every figure with the agency named before you spend money, and talk with a qualified attorney or CPA about your entity choice, taxes and contracts.

What You Need Before You Start

Gather these items before you file anything or schedule an exam:

• Written records of your practical work experience. A journeyman credential requires proof of 6,000 hours of practical experience. A master credential requires 10,000 total hours: 6,000 journeyman hours plus 4,000 practical hours.
• The 2024 International Mechanical Code (IMC) and 2024 International Fuel Gas Code (IFGC). Exams from January 1, 2026 are based on these editions, and the exams are open book.
• An EPA Section 608 certification. Federal EPA rules require it for anyone who handles refrigerants.
• A budget that separates exam fees ($40 journeyman and $125 master, each per appointment), city license fees, and Secretary of State filing fees.
• A business name you have checked in the Secretary of State business search.
• Insurance quotes for general liability and for workers' compensation through WSI.

Step 1: Confirm What Your Cities Require

North Dakota licenses HVAC work at the city level. Cities license mechanical work and fuel-gas work, and some require a dual license covering both. Counties do not license businesses, and no major city issues a general business license. Your obligations depend on the city where each job happens, so the first question is which cities you plan to serve.

Call the building or inspections office in each city where you expect to work. Ask which mechanical, fuel-gas or dual licenses they require, what the fees are, and whether they accept the State of North Dakota Reciprocity Exam. Do not assume a credential from one city carries over to another. A Fargo license does not carry over to Bismarck, Grand Forks, Minot or any other city.

Step 2: Document Your Experience

The reciprocity exams are built for people who already have field experience, so your hour documentation is the gate. Journeyman candidates need proof of 6,000 hours of practical experience. Master candidates need 10,000 total hours, which includes the 6,000 journeyman hours. Keep dated job records and copies of any prior licenses in one permanent folder. Those records will matter again when you apply in a new city or renew a credential.

Step 3: Register for the Fargo-Proctored Exam

The City of Fargo proctors the State of North Dakota Reciprocity Exams for master and journeyman HVAC. Review the HVAC exams page on fargond.gov for current registration steps, then schedule an appointment. Exam fees are $40 per appointment for journeyman and $125 per appointment for master. The exam fee is separate from the license fee, so budget for both.

Each exam is open book and runs 4 hours. Study from the 2024 IMC and 2024 IFGC, not older editions. If you fail, 30 days must pass before you can retest. Use that month to work through the sections that caused the problem instead of rereading the entire code.

Step 4: Obtain Your City Licenses

A passed exam is valid in all participating jurisdictions, but it is not a license. You must still obtain a mechanical, fuel-gas or dual license in each jurisdiction where you work. As of 2026, Fargo lists the following heating license fees. Confirm current amounts on fargond.gov before you pay.

Fargo license	Fee	Term	Expiration
Journeyman heating	$100	3 years	December 31
Master heating	$125	1 year	December 31

Other cities set their own fees and terms, so get those numbers directly from each office.

Step 5: Get Your EPA Section 608 Certification

Federal EPA Section 608 certification is required to handle refrigerants. Your city license does not replace it, and the EPA credential does not replace your city license. Keep the card on file and a copy with your job paperwork. The EPA's current testing and fee details are outside the scope of this guide, so check them directly with the EPA.

Step 6: Choose and File Your Business Entity

Most HVAC operators choose between a sole proprietorship and an LLC, and some form a corporation. The state filing costs below are the differences you will see at the Secretary of State. Structure affects liability, taxes and how you pay yourself, so use this section for the filing costs and take the liability and tax questions to a CPA or attorney.

Forming an LLC

File Articles of Organization under NDCC Chapter 10-32.1 through the FirstStop portal. The filing fee is $135. Your name must include 'limited liability company,' 'LLC' or 'L.L.C.' It cannot contain 'corporation,' 'incorporated,' 'limited partnership' or their abbreviations, and it must be distinguishable in state records from every other registered name. It also may not imply a purpose the company is not organized for. The Secretary of State publishes no guaranteed turnaround and no expedited service, and its business services line is (701) 328-2900.

Your LLC must maintain a North Dakota registered agent with a physical address in the state. You cannot serve as your own agent. The agent must be an individual who lives in North Dakota or a registered entity with a North Dakota business office. Get the agent's approval before you name them, because failure to do so may result in involuntary dissolution. A statement changing the agent costs $10.

Your LLC annual report costs $50 and is due November 15 every year. A late fee of $50 applies after the statutory due date, and once an LLC has been terminated, reinstatement costs $135.

Forming a Corporation

Articles of Incorporation under NDCC Chapter 10-19.1 cost $100 through FirstStop. The annual report costs $25 and is due August 1 every year. Corporations must also maintain a registered agent.

Name Reservation and Trade Names

You can reserve a business name for $10. The reservation lasts 12 months and can be renewed for successive 12 month periods. If you operate under a name other than your legal name, such as [Your Name] Heating and Cooling as a sole proprietor, you need a trade name registration with the Secretary of State. It costs $25 to register, $25 to amend and $25 to renew, and it must be renewed every 5 years. A trade name gives you exclusive rights to that name within North Dakota only. Trade names are filed with the state, not with a county.

Step 7: Check the Contractor License Threshold

North Dakota has no general business license, but it does require a contractor license for larger construction work. When the cost, value or price of a construction job exceeds $4,000, the person doing the work must hold a North Dakota contractor license issued by the Secretary of State under NDCC Chapter 43-07. Fees run from $100 for Class D (jobs up to $100,000) to $450 for Class A (jobs over $500,000), and licenses renew annually by March 1. Confirm which class you need, the qualifying requirements, and how the threshold applies to your billing before you quote a job. Do not split one job into several invoices to stay under $4,000 until you have confirmed with the Secretary of State how the threshold counts.

Step 8: Register for Sales Tax and Plan for Income Tax

North Dakota's state sales tax rate is 5%, plus any city and county taxes. Any business making taxable sales must hold a sales and use tax permit from the Office of State Tax Commissioner. Apply through ND TAP about 30 days before you open. Whether your labor, parts or equipment sales are taxable is a question for the Tax Commissioner, so confirm that before you write your first invoice.

North Dakota has no franchise tax and no separate LLC privilege tax. An LLC taxed as a partnership or disregarded entity passes income to its owners, who pay North Dakota individual income tax at 0%, 1.95% or 2.50% depending on bracket. For tax year 2025, a single filer paid nothing on the first $48,475 of taxable income, 1.95% from $48,475 to $244,825, and 2.50% above that. An LLC that elects C corporation treatment pays corporate income tax of 1.41%, 3.55% and 4.31% by bracket. Rates and thresholds change, so verify them at tax.nd.gov.

Step 9: Insure Your Workers Through WSI

Workers' compensation in North Dakota is a state monopoly administered through WorkForce Safety and Insurance (WSI). You cannot buy it from a private carrier. If you hire employees, you must cover them through WSI, so set up that account before your first payroll. If you will work alone, confirm with WSI whether you need coverage. General liability and commercial auto policies come from private insurers, and you should compare quotes before you sign anything.

Common Mistakes to Avoid

• Searching for a state HVAC license. None exists, so do not spend months waiting on one. Your effort belongs with the city offices and the exam.
• Treating the exam as a license. A passed reciprocity exam still requires a city license where you work.
• Assuming one city covers another. A Fargo license does not carry over to other cities.
• Studying older code editions. Exams from January 1, 2026 use the 2024 IMC and IFGC.
• Retesting too soon. Thirty days must pass after a failed attempt.
• Forgetting the exam fee is separate. Budget $40 for a journeyman exam or $125 for a master exam, plus the license fee.
• Dropping the 'LLC' from your name or naming yourself as registered agent. Both problems can delay your filing.
• Missing the November 15 LLC annual report. A $50 late fee applies after the due date.
• Applying for the sales tax permit late. Apply about 30 days before opening.
• Using a private workers' compensation carrier. The state monopoly runs through WSI.
• Handling refrigerants without EPA Section 608 certification. Federal rules require it.

Practical Tips

• Build a licensing calendar. Include November 15 for LLC annual reports, August 1 for corporation annual reports, March 1 for contractor renewals, and December 31 for Fargo heating license expirations.
• Call Secretary of State Business Services at (701) 328-2900 for current filing timing, since the office publishes no guaranteed turnaround.
• Ask the North Dakota Small Business Development Centers, hosted by the University of North Dakota, for guidance on business planning. The SBA North Dakota district page lists additional resources.
• Keep one folder with your hour records, exam scores, city licenses, EPA card, state filings and insurance policies. Lenders, insurers and city inspectors often ask for the same documents.

What to Expect

Following these steps may help you move from paperwork to your first permitted job, though results vary with your experience, the cities you serve and your workload. Exam scheduling, hour documentation and city licensing often take more time than the Secretary of State filing, so build your schedule around those items. No timeline is guaranteed, and the state does not publish one for most filings.

Next Steps

1. Confirm the cities you will serve and their license requirements this week.
2. Gather your hour records and confirm you meet the 6,000 or 10,000 hour threshold.
3. Schedule your Fargo-proctored exam and study from the 2024 IMC and IFGC.
4. Choose your entity with a CPA or attorney, then file through FirstStop.
5. Apply for your sales tax permit about 30 days before you open, and set up WSI before your first hire.

Reminder: This article is informational, not legal or tax advice. Verify all fees, deadlines and requirements with the named agency, and consult a qualified attorney or CPA for complex situations.