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A heat pump in this area runs its heating cycle far longer than its cooling cycle, which means the compressor, the reversing valve, and the refrigerant circuit accumulate wear asymmetrically. Homes in Rockland County, NY run heat about eight months a year, from October through May. Contractors diagnosing a failed compressor here check the heating-side components first, because that is where the hours have built up. Defrost cycles, low-temperature operation, and the repeated stress of cold-weather startup load the reversing valve in ways summer use alone never would. A refrigerant charge that reads acceptable in July can show its limits in January.

Ductwork and electrical connections put in for an earlier generation of equipment do not disappear when the equipment changes. Half the homes in Rockland County, New York were built in 1971 or earlier (2020-2024 ACS 5-year). That history shows up when a contractor opens a heat pump for repair and finds refrigerant lines routed around additions, spliced wiring, or junction boxes sized for a different load. Whether a repair is a straightforward component swap or a longer job depends on what those opened connections actually contain, not on what the permit or the thermostat says.
The Parts of a Heat Pump a Contractor Checks First

The outdoor unit sits outside the house and holds the compressor and the outdoor coil. The compressor is the piece contractors look at early in a repair call because it drives the whole system. When it fails, the system runs but moves no heat. The outdoor coil sits around it and is where heat gets absorbed or released depending on the season.
The indoor air handler mounts inside, often in a utility closet or attic, and pushes conditioned air through the house. Inside it sits the indoor coil, and beside it the expansion valve, which controls how refrigerant flows between the two units. The refrigerant line set connects the outdoor and indoor sides, and a fault anywhere along it shows up as a system that runs but underperforms.
The drawing shows the general layout of a heat pump system, and a licensed contractor determines which parts apply to your specific house and situation.
Get matched in Rockland CountyRockland County, by the numbers
72 severe weather events were recorded in Rockland 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 Rockland County, New York were built in 1971 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesRockland County, New York holds 108,945 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 67.9% of the occupied homes in Rockland County, New York (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesSevere Weather Events in Rockland County
Extreme weather puts heat pumps under load at the worst moments, and equipment that runs hard through demanding conditions needs repair work that accounts for what local weather actually delivers. That makes weather history relevant to any conversation about heat pump reliability in Rockland County.
72 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.