What New Hampshire homes are up against.
NOAA National Centers for Environmental Information, Storm Events Database, bulk CSV export, events 2015-01-01 through 2024-12-31. · U.S. Census Bureau, 2020-2024 American Community Survey 5-Year Estimates
What a contractor has to establish before quoting a heat pump job is how hard the existing equipment has been running, and the answer sits in the unit itself rather than in any aggregate number. 1,780 severe weather events were recorded in New Hampshire between 2015 and 2024. That record tells you the load the state has carried; it does not tell you how much of it landed on the condenser at a specific address. A system that has spent years holding capacity through repeated severe weather events shows it in ways a contractor can read directly: worn contacts, stressed refrigerant circuits, reduced output against demand. The statewide figure sets the context. The equipment in front of the contractor tells the rest.
Before a contractor can size a heat pump for a house in New Hampshire, they have to find out what is already in the walls and the utility room. Half the homes in New Hampshire were built in 1979 or earlier (2020-2024 ACS 5-year). A house built before today's electrical standards may carry a service panel that was adequate for resistive heat but not for a heat pump's demands. Ductwork, where it exists, was sized for a different kind of system and may not move air the way the new equipment requires. None of that is a barrier, but it is work that has to be scoped before a quote means anything.
Does your county put extra stress on HVAC equipment in New Hampshire?
2015–2024 · Source: NOAA National Centers for Environmental Information, Storm Events Database.
A condenser sitting outside faces whatever the sky delivers: ice load, wind, driving rain, ground frost that shifts the pad beneath it. Equipment sized or positioned without that local picture gets asked to do more than it was built for, and it shows up in early failures and shortened service life. The contractor you are matched with knows how to size and place a system for what your address actually sees.
New Hampshire HVAC Contractor License Requirements
New Hampshire sets its own rules for who can perform HVAC installation and repair work. The provisions below are quoted directly from state sources, not paraphrased.
New Hampshire's mechanical licensing board issues nine credentials — hearth system, four fuel gas endorsements, domestic appliance technician, and master, journeyman and apprentice plumber — and a licensee may not work outside the specialty their licence names. None of the nine is an HVAC licence.
A state license requirement means the work is reserved for contractors who have met New Hampshire's standards for this trade. Unlicensed individuals cannot lawfully perform it on your home. Every contractor this site routes a request to holds the license these provisions describe.
View the source provisions2 provisions
New Hampshire's mechanical licensing board issues nine credentials — hearth system, four fuel gas endorsements, domestic appliance technician, and master, journeyman and apprentice plumber — and a licensee may not work outside the specialty their licence names. None of the nine is an HVAC licence.
New Hampshire does not license HVAC as a trade, and says so where it matters: the plumbing licence expressly does not reach a person installing heating, cooling, air conditioning or domestic water heating systems, whether solar, oil, gas or electric. The gas piping on a gas-fired system is a separate matter and needs a fuel gas fitter licence.