New Hampshire
HVAC in New Hampshire
24 HVAC companies in the metro area within about 35 miles of Manchester – plus how New Hampshire licenses HVAC work.
Metro areas
New Hampshire cities we cover
New Hampshire rules
Do HVAC contractors need a license in New Hampshire?
How New Hampshire licenses HVAC work
Licensing is split between the state and local governments.
Who licenses: New Hampshire Office of Professional Licensure and Certification (OPLC), Mechanical Licensing Board
License types: Fuel Gas Fitter (fuel gas installation technician, fuel gas service technician, fuel gas piping installer, hearth system technician, domestic appliance technician), Fuel Gas Fitting Trainee, Oil Heating Technician (voluntary certification).
Companies: We could not find a statewide license for general HVAC or air conditioning contractors in New Hampshire. The state does license people who work on gas-fired equipment: under RSA 153:27-38 and Board rule Saf-Mec 102, fuel gas fitting (natural gas or propane piping, appliances and venting, including heating and water heating equipment) requires a fuel gas fitter license, with exemptions such as an owner doing fuel gas fitting in their own owner-occupied single-family home (RSA 153:36). Certification for oil heating technicians is voluntary under RSA 153:16-b. RSA 153:36 also exempts work connected with installing heating, cooling, air conditioning or domestic water heating systems from the plumber licensing requirement. We did not find an official page stating that no HVAC license exists, so this describes only what the statutes and rules we read cover.
Local rules: We did not find any city or town HVAC contractor licensing program in New Hampshire; local building permits may still apply and we did not research them. The OPLC pages themselves returned access errors to our fetch tool, so Board scope was read from the statutes and administrative rules on the General Court website.
Check a license: oplc.nh.gov
For gas furnaces, boilers or water heaters, ask for the technician's New Hampshire fuel gas fitter license and look it up on the OPLC license lookup; for cooling-only or oil work, ask what training or certification the technician holds and whether a local permit is needed.
Federal rule: in every state, technicians who handle refrigerant must hold EPA Section 608 certification, whatever the state or city requires.
We could not confirm every detail from New Hampshire’s own sources, so treat this as a starting point and check with the agency.
Sources: gc.nh.gov, gc.nh.gov, gc.nh.gov, oplc.nh.gov. Checked October 2026 from official sources. This is not legal advice.
Before you hire
Ask for the license number and check it on the official lookup where one exists. Ask for proof of insurance and a written, itemized estimate, and ask who pulls the permit if the job needs one – a new furnace, heat pump or air conditioner usually does.
Questions
New Hampshire HVAC questions
Do HVAC contractors need a license in New Hampshire?
In New Hampshire, licensing is split between the state and local governments through the New Hampshire Office of Professional Licensure and Certification (OPLC), Mechanical Licensing Board. You can check a license at oplc.nh.gov.
Where in New Hampshire do you list HVAC companies?
In New Hampshire: Manchester (24). Each city page lists companies based within about 25 miles – 35 in smaller metro areas – whose own website names that city or nearby towns.
Do technicians need EPA certification?
Yes, in every state: federal rules require technicians who handle refrigerant to hold EPA Section 608 certification. A state or city license is a separate requirement.
How do I get an HVAC company listed in New Hampshire?
HVAC companies can add their business free. We check every listing against the business’s own website.
Neighboring states: Vermont · Maine · Massachusetts.
Request an HVAC company
Ask us to find an HVAC company in New Hampshire
Tell us the job and your ZIP code. We pass it to listed companies that serve your area.
No heat in freezing weather, or no cooling in dangerous heat? Call a company from the list that says it takes emergency calls – a form is not fast enough. If you smell gas or a carbon monoxide alarm sounds, leave first and call 911 or your gas utility from outside.