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A heat pump working a repair job in Orange County has already been carrying a long heating load, and the components that show it first are the ones that move: the reversing valve, the refrigerant circuit, and the contacts on the defrost board. Homes in Orange County, NY run heat about eight months a year, from October through May. The compressor accumulates starts across that heating season in a way a straight cooling unit never does here, because the system is also running in reverse, extracting heat from cold outdoor air. A contractor quoting a repair looks at defrost cycle history and refrigerant charge before anything else, because those are the first things the heating load degrades.
Ductwork routed through a house built for a different era of equipment carries the evidence of every retrofit that came before. Half the homes in Orange County, New York were built in 1975 or earlier (2020-2024 ACS 5-year). A contractor opening a heat pump here finds not just the unit itself but the layered history of how the house was adapted: splice points in refrigerant lines, duct sections that were extended rather than replaced, and wiring that was patched to meet a load the original panel was never sized for. Any one of those can be what is actually causing the fault, and it only shows up once the system is open.
The Parts of a Heat Pump a Contractor Checks First
The outdoor unit sits on a pad outside the house and holds the compressor and the condenser coil. The compressor is usually where a contractor starts: when it fails, the system stops moving heat entirely. The condenser coil sits around it, and a bent or fouled coil shows up as poor performance rather than a full shutdown.
Inside, the air handler holds the evaporator coil and the blower fan, and together they pull heat from the indoor air and push conditioned air through the house. The reversing valve is a small but critical component that lets the system shift between heating and cooling modes. The refrigerant lines run between the two units, and a leak in them will starve both coils of what they need to work.
The drawing shows the general layout of a heat pump system, and a licensed contractor determines which parts apply and what work is needed in your specific home.
Get matched in Orange CountyOrange County, New York, by the numbers
197 severe weather events were recorded in Orange County, New York 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 Orange County, New York were built in 1975 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOrange County, New York holds 149,699 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 67.8% of the occupied homes in Orange County, New York (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesWeather Events in Orange County That Stress Heating and Cooling Systems
Heat pumps work harder when outdoor conditions swing hard, and Orange County delivers those swings. Repair demand here follows the weather, which makes local climate history a useful frame for understanding why equipment in this area takes the beating it does.
197 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.