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A heat pump running through a cold upstate winter is asking its reversing valve and refrigerant circuit to work in conditions where capacity is already compressed by low outdoor temperatures. Homes in Yates County, NY run heat about eight months a year, from October through May. By late winter, the parts that manage that constant demand show it: a contractor here checks the reversing valve, the coil, and refrigerant charge before assuming the compressor has reached the end of its service life, because each of those fails sooner under sustained cold-weather load than under warm-weather use. Age on the nameplate tells the contractor less than what the opened system actually shows.
Wiring and refrigerant lines in a house of this age have usually been through at least one previous system, which means what a contractor finds once the unit is open can differ sharply from what the permit paperwork suggests. Half the homes in Yates County, New York were built in 1969 or earlier (2020-2024 ACS 5-year). That history matters for repair work specifically: a failed part in a system running in stock this old may have been stressed by an electrical or line-set condition that predates the current equipment entirely. A contractor who opens the unit and finds a burned component still has to determine what produced the burn.
The Parts of a Heat Pump a Contractor Checks First
The outdoor unit sits outside the house and holds the compressor and the condenser coil. These are the parts a contractor reaches first when a heat pump stops heating or cooling properly. A failed compressor, a refrigerant leak at the coil, or a seized fan motor in that cabinet are the usual starting points for any diagnosis.
Inside the house, the air handler pushes conditioned air through the home and contains the evaporator coil and the blower motor, both of which can be the source of a problem. The reversing valve, which sits in the refrigerant line and tells the system which direction to run, is another part a contractor checks when a heat pump runs but delivers the wrong kind of air. The expansion device and the refrigerant lines connecting the two units round out what a technician works through.
The drawing shows a general layout of a heat pump system, and a licensed contractor determines which components apply to your specific setup.
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73 severe weather events were recorded in Yates 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 Yates County, New York were built in 1969 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesYates County, New York holds 13,211 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 77.2% of the occupied homes in Yates County, New York (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesSevere Weather Events in Yates County
Extreme weather puts heat pumps under stress, and how hard that stress hits depends on what the local climate actually does. Repair demand in Yates County follows the same pattern, which is why local weather history is a workload fact, not background noise.
73 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.