HVAC Contractor Permit Requirements in Concord, NH

1. EIN (Employer Identification Number)

   Required if you have employees or operate as an LLC or corporation. Free from the IRS.

   Official government source

   Free·Immediate (online application)

   Free

   Immediate (online application)

1. New Hampshire — No Sales Tax

   New Hampshire has no state sales tax and no local sales taxes, so businesses need no sales tax permit or resale registration for sales tax purposes. Businesses may instead owe the Business Enterprise Tax and the Business Profits Tax, both administered by the NH Department of Revenue Administration; BET paid can be credited against BPT. Restaurants, caterers and lodging operators separately collect the Meals and Rooms (Rentals) Tax and must hold a DRA license for it. Filing and payment are handled through DRA's Granite Tax Connect portal.

   Official government source

   No fee to register for business taxes with DRA. For taxable periods beginning on or after January 1, 2025, a BET return is due from any enterprise with more than $298,000 in gross receipts or an enterprise value tax base above $298,000; the BET rate is 0.55%·Immediate — registration and filing are done online through Granite Tax Connect

   No fee to register for business taxes with DRA. For taxable periods beginning on or after January 1, 2025, a BET return is due from any enterprise with more than $298,000 in gross receipts or an enterprise value tax base above $298,000; the BET rate is 0.55%

   Immediate — registration and filing are done online through Granite Tax Connect

2. EPA Section 608 Certification (for refrigerants)

   Technicians who purchase, recover, or handle refrigerants must hold EPA Section 608 certification. Required by federal law regardless of state.

   Official government source

   $20–$100 (exam)·1–2 days

   $20–$100 (exam)

   1–2 days

1. New Hampshire OPLC Mechanical Licensing Board — Trade Licenses for HVAC Work

   New Hampshire has no general HVAC contractor or HVAC technician license. The OPLC Mechanical Licensing Board licenses the specific trades involved: Fuel Gas Fitters (piping installer, installation technician, service technician), Hearth Installers, Domestic Appliance Technicians, Oil Heating Technicians, plumbers, and mechanical business entities. Federal EPA Section 608 certification is separately required to handle refrigerants, and a local mechanical permit is required for each installation.

   Official government source

   $50 application fee for Oil Heating Technician certification, $198 for a Fuel Gas Fitter or Hearth Installer license, $176 for a Domestic Appliance Technician, and $275 for a Mechanical Business Entity license·No processing time is published by OPLC

   $50 application fee for Oil Heating Technician certification, $198 for a Fuel Gas Fitter or Hearth Installer license, $176 for a Domestic Appliance Technician, and $275 for a Mechanical Business Entity license

   No processing time is published by OPLC

2. City of Concord — No General Business License

   Concord does not require a general business license, and the City Clerk does not run a business-licensing program (the Clerk handles dog licensing, vital records and elections). Licensing that does exist is administered by the Code Administration Division's Health and Licensing Services and is limited to specific activities — food service establishments, tattoo parlors and artists, peddlers and vendors, pawnbrokers and secondhand dealers, entertainment and places of amusement, taxicabs, junk dealers, charitable solicitation and special events. Check the City's Permits and Licenses page for what applies to your trade.

   Official government source

   No general business license fee. Activity-specific licenses carry their own fees, most with a $30 non-refundable application fee (for example a food service license is $74 to $534 per year by class, and a tattoo establishment is $158 per year)·Not applicable — there is no general business license to apply for

   No general business license fee. Activity-specific licenses carry their own fees, most with a $30 non-refundable application fee (for example a food service license is $74 to $534 per year by class, and a tattoo establishment is $158 per year)

   Not applicable — there is no general business license to apply for

3. City of Concord Code Administration — Mechanical Permit (per project)

   A mechanical permit is required from Concord's Code Administration Division for each HVAC installation or major repair; Merrimack County has no permitting function. Applications are filed through the City's Citizen Self Service permit portal and inspections are required upon completion.

   Official government source

   $30 non-refundable application fee plus equipment-based charges under City Ordinance 26-17-3: heating or cooling equipment is $0.90 per 1,000 BTU with a $50 minimum, mini-split systems are $40 per system, refrigeration is $11.80 per ton with a $50 minimum, gas piping starts at $50 plus $11.80 per outlet, and modifications to an existing commercial heating or cooling system are $110 each. Re-inspection after a first rejection is $41.25·No processing time is published by the City

   $30 non-refundable application fee plus equipment-based charges under City Ordinance 26-17-3: heating or cooling equipment is $0.90 per 1,000 BTU with a $50 minimum, mini-split systems are $40 per system, refrigeration is $11.80 per ton with a $50 minimum, gas piping starts at $50 plus $11.80 per outlet, and modifications to an existing commercial heating or cooling system are $110 each. Re-inspection after a first rejection is $41.25

   No processing time is published by the City

Official Sources

• New Hampshire HVAC Technician Licensing — HVAC Contractor
• City of Concord City Clerk

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