New Hampshire HVAC License Fees

The Current Fee Schedule

New Hampshire standardized its mechanical licensing fees under administrative rule Plc 1002.25, consolidating what was previously an inconsistent patchwork of board-specific charges. Here's what you'll pay at each stage:

These figures replaced an older tiered system where business entity fees varied from $190 to $460 depending on employee count. The OPLC flattened the structure to $250 for all business entities regardless of size, which simplified their unified licensing software.

For reinstatement, Plc 1002.25 uses the applicable category amount rather than a separate $350/$550 schedule: $90 for a fuel gas trainee, $190 for a fuel gas fitter, $170 for a domestic appliance technician, and $250 for a mechanical business entity.

Exam Fees Are Separate

The OPLC's fee schedule covers application processing and license issuance only. Examination fees are paid directly to the approved testing provider — not to the state.

The computerized trade examination costs $100, paid to providers like NH Gasfitters, Prov, or Granite State Trade School. Because New Hampshire uses an examination-first sequence, you'll pay this before you ever submit your OPLC application. If you fail and need to retake, each additional attempt is another $100.

Between the exam fee ($100) and the initial license application ($190), a new fuel gas fitter is looking at a minimum of $290 in state and testing costs before touching insurance, business registration, or municipal permits.

The Sole-Licensee Business Entity Exemption

This is the fee detail most new contractors miss. Under administrative rule Mec 307.04(g), a business owner who is the sole licensee of their entity — meaning they employ no other licensed technicians, apprentices, or trainees — is completely exempt from the $250 business entity license fee.

The exemption ends the moment you hire any licensed staff or register an apprentice or trainee under your business. At that point, the full $250 biennial fee kicks in.

For a solo technician forming an LLC to start taking direct contracts, the fees in this sequence are personal licensing ($190), your exam ($100), and the Secretary of State LLC filing ($102 online); insurance and project costs are separate. The $250 business entity fee can wait until you're ready to hire.

Hidden Costs Beyond the OPLC

The OPLC fees are only part of the financial picture. Building a fully operational HVAC business in New Hampshire involves several other expense categories:

Secretary of State LLC filing: $102 online or $100 by mail. Trade name registration (if using a DBA): $50. Annual report: $100.

Commercial general liability insurance: The standard minimum is $1,000,000 per occurrence. Premiums for a solo HVAC contractor typically run $1,500 to $3,000 annually depending on your claims history and scope of work.

Workers' compensation: Required for LLC members who perform on-site manual labor at active construction sites. This is the cost that surprises new LLC owners — even a single-member LLC can't legally exclude the managing member from workers' comp when they're doing hands-on HVAC work. Annual premiums vary but expect $2,000 to $5,000 for a solo operator.

Municipal permit fees: These vary by city. Manchester charges $40 for a single-unit residential heating permit; Nashua starts at $50 base plus equipment surcharges ($45 per furnace/boiler, $40 per ductless split, $20 per AC condenser). These are per-project costs passed through to the customer but require upfront cash flow.

Fee Payment Methods

The OPLC accepts personal checks, cashier's checks, and money orders for initial applications submitted by mail. Online renewals accept credit and debit cards. Testing providers each set their own payment policies — check with your specific exam administrator.

One thing to watch: if the OPLC returns your application for deficiencies and you don't respond within 60 days, the application is denied and the processing fee is forfeited. Getting your documentation right the first time directly protects your investment.

Planning Your Budget

The total first-year cost for a new solo HVAC contractor in New Hampshire — from exam through business formation, licensing, insurance, and the first municipal permit — typically falls between $4,500 and $8,000 depending on insurance premiums and how many jobs you pull permits for.

The New Hampshire HVAC License Guide includes worked cost examples for each stage so you can budget accurately before committing to the licensing process.

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