Quick Reference Table
Label | Value |
|---|---|
License Types | Fuel Gas Trainee, Fuel Gas Fitter, Domestic Appliance Technician, Hearth System Installer, Mechanical Business Entity |
Regulatory Agency | New Hampshire Office of Professional Licensure and Certification (OPLC), Mechanical Licensing Board |
Experience Required | Supervised hours as Trainee; 1,000 hours for endorsement/licensure; 4-year apprenticeship for plumbing crossover |
Exam Requirements | State-approved licensing exam required for each level; proof of passing in application |
Renewal Cycle | Every 2 years |
Continuing Education | No set hourly CE mandate; board can require proof of competence and audit providers |
Confirmed Fees | Fuel Gas Trainee: $90 initial/$80 renewal; Fitter: $190 initial/$180 renewal; Business: $190–$460 (2026) |
Key Legal Links |
Who Must Meet HVAC License Requirements in New Hampshire?
Most individuals who work on fuel gas piping, gas appliances, or HVAC fuel gas systems for compensation must meet HVAC license requirements in New Hampshire. This includes both employees and independent contractors. Specific rules also apply for business entities conducting HVAC or fuel gas work.
If you are new to the field, you must first register as a Fuel Gas Trainee before accruing experience. When you are ready to install, service, or repair gas piping or appliances as a journey-level worker, you need a Fuel Gas Fitter license. Those working primarily on domestic appliances or hearth systems require the specialized license listed for those trades. If a company performs this work, it must register as a Mechanical Business Entity and appoint a licensed manager.
However, key exemptions to the HVAC license requirements in New Hampshire exist. For instance, homeowners working on their single-family primary dwelling do not need a license for their own property per RSA 153:36. People working for regulated public utilities as defined in statute are also exempt. If you fall outside these groups, you must be properly licensed and meet all state HVAC license requirements in New Hampshire.
HVAC License Types in New Hampshire
Several different license classes make up the HVAC license requirements in New Hampshire, each tailored to a specific job scope or business need. Choosing the right license type is crucial for legal compliance.
Fuel Gas Trainee / Apprentice: This registration lets beginners log supervised work experience and complete formal training. The Trainee permit is valid for two years and is necessary before any experience counts toward licensing.
Fuel Gas Fitter: The full journey-level license. It allows you to install, repair, and service fuel gas piping and systems. There are subcategories based on the type of fuel gas work performed, such as service, installation, or piping.
Domestic Appliance Technician: Covers installation, service, and repair of domestic gas appliances (e.g., furnaces, boilers, stoves).
Hearth System Installation Technician: Authorizes work on hearth and vented heating appliances such as fireplaces or wood stoves.
Mechanical Business Entity License: Required for corporations, LLCs, or partnerships performing mechanical (HVAC/fuel gas) work. The company must employ at least one licensed manager for the relevant discipline.
Master/Journeyman Plumbing License: While parallel to HVAC, these licenses pertain to plumbing gas work; overlapping scope for some HVAC-plumbing crossover but governed under distinct rules.
The jurisdiction of each license is defined in state rule and statute. Therefore, always confirm that the HVAC license requirements in New Hampshire for your exact activities align with your current or intended licensure level.
How to Get Licensed: HVAC License Requirements in New Hampshire
To get licensed, you must complete these state-mandated steps for the specific HVAC license requirements in New Hampshire. Your exact process depends on whether you are seeking an individual or business license.
Register as a Fuel Gas Trainee. Complete the official application packet, including required fee and ID. Submit to OPLC. (Trainee Application)
Complete required training and supervised field experience. Log experience hours under the direct supervision of a licensed Fuel Gas Fitter.
Enroll in a board-approved training or education program. Make sure your program appears on the Mechanical Licensing Board’s approved list as outlined in Mec 308.01.
Pass the relevant licensing exam for your classification (Fitter, Appliance, Hearth), as required. Provide official score reports.
Gather and prepare documentation: Training program certificate, logged hours, exam results, government-issued photo ID, any criminal record check if required, and supervisor/employer attestation letters confirming qualifications.
Submit license application packet. Use the appropriate application form and include all documents with the prescribed fee stated in Plc 1002.25.
Business entities: Complete and submit the Mechanical Business Entity application. Designate at least one qualified managing licensee, include employee roster if needed, and pay the sliding scale fee.
Wait for board review. Board staff will review your application and contact you if further documentation is needed.
Receive your license or registration once approved. At this point, you may legally perform HVAC fuel gas work within the statutory scope of your license type.
Remember, all trainees, applicants, and companies must comply with the detailed HVAC license requirements in New Hampshire throughout the process. Double-check requirements before submitting forms to avoid delays or rejections.
Application Requirements
The HVAC license requirements in New Hampshire specify both general and trade-specific prerequisites that you must satisfy to apply successfully. These requirements ensure competence and public safety.
Experience and Age Requirements
You must be at least 18 to hold a Fuel Gas Fitter license. As a Trainee, you may register earlier but must complete the necessary hours in a period not exceeding 60 months prior to application. Practical field experience is always supervised by a licensed professional.
Training and Education
Formal education through a board-approved program is required. Training must include both classroom hours and hands-on work, and completion must be documented.
Documentation
Valid government-issued photo ID (such as a driver’s license or passport)
Proof of completed education/training (certificates, transcripts, diplomas, or program official letters)
Supervisor or employer attestation letters, stating your competence and verifying your work hours
Exam score results
If you have any criminal convictions, provide a criminal record disclosure as outlined by the Mechanical Licensing Board
Bond and Insurance
The administrative rules governing HVAC license requirements in New Hampshire do not mandate contractor bonds or specific insurance for individual licensees. However, business entities should review company-level requirements and best practices. Insurance may still be required for business registration or by private contracts, even if not mandated by state licensing regulations.
Background Check
Applicants with a criminal history may be subject to additional review. The board considers criminal record checks and details on any past convictions when evaluating applications. Full and honest disclosure is required during the process.
Exams for HVAC License Requirements in New Hampshire
All main license types for HVAC fuel gas trades in New Hampshire require passage of a state-recognized exam as part of the HVAC license requirements in New Hampshire. The exam demonstrates core knowledge in mechanical, fuel gas, and safety rules.
The exam is structured and administered per Mechanical Board standards. Content covers applicable code, installation practices, safety, troubleshooting, and legal compliance. You must provide your official passing score as part of your application packet. Training providers often include exam preparation components. The cut score or exam format is not published in public rules; verify exact current details with the OPLC or Mechanical Licensing Board: NH Mechanical Licensing Board Rules.
Retaking the exam is allowed after an unsuccessful attempt, but fees may apply for each subsequent test. Your exam pass remains valid through the initial licensure and is required for renewal if you have let a license lapse for more than 12 months and need reinstatement.
Fees for HVAC License Requirements in New Hampshire
State law sets HVAC license requirements in New Hampshire concerning application, renewal, and late penalty fees. All fees current as of 2026 and Plc 1002.25.
Fuel Gas Trainee (Initial or Reinstatement): $90 (as of 8-1-23 – verify at OPLC Fee Schedule)
Fuel Gas Trainee Renewal: $80 (as of 8-1-23 – verify at OPLC Fee Schedule)
Fuel Gas Fitter (Initial or Reinstatement): $190 (as of 8-1-23 – verify at OPLC Fee Schedule)
Fuel Gas Fitter Renewal: $180 (as of 8-1-23 – verify at OPLC Fee Schedule)
Domestic Appliance Technician (Initial or Reinstatement): $170 (as of 8-1-23 – verify at OPLC Fee Schedule)
Domestic Appliance Technician Renewal: $160 (as of 8-1-23 – verify at OPLC Fee Schedule)
Hearth System Installer (Initial or Implied Renewal): $190 initial; $180 renewal implied but not in published schedule – verify at OPLC Fee Schedule
Mechanical Business Entity: $190 (1–5 licensees); $300 (6–20); $460 (21+), renewal same as initial except for 21+ employees (renewal $450) (as of 8-1-23 – verify at OPLC Fee Schedule)
Reinstatement (lapsed over 12 months or revoked): $350 individual, $550 business entity (as of 8-1-23 – verify at Mec 500 Rules)
Late Renewal Penalties: $25/month (individual licenses); $10/month (trainee/apprentice), up to 12 months (as of 8-1-23 – verify at official rules)
Always verify the most recent fee schedule, as rates and deadlines may change. All payments are made directly to OPLC with application or renewal paperwork.
Renewal and Continuing Education: HVAC License Requirements in New Hampshire
All major categories under HVAC license requirements in New Hampshire require renewal every two years. You must submit the appropriate form and fee within the renewal window to maintain active status.
Renewal Process
The renewal process is nearly identical to initial application. You must provide a current address, updated contact info, and attest to compliance with ongoing competence rules. If your license lapses, penalties and additional review apply.
Renewal must occur before your license expires.
Within 30 days after expiration, pay late renewal penalties monthly until the 12-month mark.
After 12 months, your license is considered expired and requires full reinstatement (new application, higher fee, board review).
Continuing Education Rules
Unlike some states, there is no specified hourly continuing education requirement for most HVAC licenses in New Hampshire. However, the board may audit your training or ask for proof of ongoing competence. Training providers must be board-approved. If you are audited, be ready to show you have maintained or improved your skills through training or practical experience as referenced in the administrative rules.
Lapses and Reinstatement
If your license is not renewed within 12 months, you lose all privileges and must reapply, pay the reinstatement fee ($350 or $550), and potentially resubmit documentation, including a new background check or exam proof.
Timely renewal is therefore vital for anyone subject to HVAC license requirements in New Hampshire to keep your credentials valid.
Reciprocity for HVAC License Requirements in New Hampshire
New Hampshire does not publish a list of reciprocal states for HVAC licenses, but it may grant licensure by endorsement if you meet comparable HVAC license requirements in New Hampshire.
For example, the state may recognize out-of-state journeyman plumbers or appliance technicians who have completed a four-year apprenticeship (plumbers) or have 1,000 hours of relevant experience (fuel gas or appliance tech). You must show that your out-of-state education, experience, and exam record match or exceed New Hampshire’s standards. Each endorsement is reviewed on a case-by-case basis.
Therefore, contractors licensed in another jurisdiction should collect training and experience records, exam scores, and license verifications before seeking licensing in New Hampshire. See Plc 313.34 endorsement rules for details.
Official Links
Mechanical Licensing Board Homepage
For additional templates and contractor tools, see HVAC contractor tools on CloseCrew.
