Tell us about the job
Takes about a minute. No obligation.
A heat pump in Coos County runs its compressor hard through a long heating season, and the refrigerant circuit, reversing valve, and defrost controls bear most of that load. Homes in Coos County, NH run heat about ten months a year, from September through June. Capacity drops as outdoor temperatures fall, so the compressor works harder at the margins of the season than it does mid-winter, which is where stress fractures and refrigerant leaks tend to start. A contractor quoting a repair here checks the compressor and reversing valve before anything else, because those are the components that have been cycling the longest.
Repair work on a heat pump here runs into the full history of what the system has been asked to do. Half the homes in Coos County, New Hampshire were built in 1969 or earlier (2020-2024 ACS 5-year). A unit that has been cycling through Coos County winters for years accumulates wear in specific places: refrigerant lines, contactors, capacitors, and the electrical connections that feed the unit. When a contractor opens the system, what they find in those components sets the repair scope. A part that has been working hard for a long time may have degraded in ways that a visual check from the outside does not show.
The Parts of a Heat Pump a Contractor Checks First
The outdoor unit is the piece most homeowners recognize, a metal cabinet that sits on a pad beside the house and holds the compressor and the condenser coil. The compressor is usually where a contractor looks first, because it does the hardest work. When the coil or the compressor is the problem, the symptoms show up fast: the system runs but the house does not change temperature.
The air handler sits inside, often in a mechanical closet or an attic, and it moves conditioned air through the home while the expansion valve and refrigerant lines connect the two units. The refrigerant lines run between the indoor and outdoor cabinets, and a fault anywhere along them affects both sides. The air handler also holds the blower motor and the evaporator coil, both of which a contractor examines when airflow or temperature delivery is off.
The drawing beside this text shows the general layout of a heat pump system, and a licensed contractor determines what applies to the specific equipment and configuration in your home.
Get matched in Coos CountyCoos County by the numbers
184 severe weather events were recorded in Coos County, New Hampshire between 2015 and 2024.
NOAA National Centers for Environmental Information, Storm Events Database, bulk CSV export, events 2015-01-01 through 2024-12-31.Half the homes in Coos County, New Hampshire were built in 1969 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCoos County, New Hampshire holds 20,637 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 74.2% of the occupied homes in Coos County, New Hampshire (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCodes & Standards Governing Heat Pump Repair in Coos County, New Hampshire2 sourced rules and standards
Licensing and Legal Requirements in Coos County, New Hampshire
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.
Severe Weather Events in Coos County
Extreme weather puts heat pumps under pressure at the moments they work hardest. Repair demand in Coos County follows what the weather does, which is why local event history belongs alongside any conversation about keeping equipment running.
184 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.