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A heat pump working a cold upstate winter cycles its compressor hard, because capacity drops as outdoor temperatures fall and the unit runs longer to close the gap. Homes in Schenectady County, NY run heat about eight months a year, from October through May. Refrigerant lines, the reversing valve, and the compressor itself accumulate wear across those heating months in ways that show up differently than summer faults do. A contractor diagnosing a repair here checks the refrigerant charge and reversing valve function early, because those are the components that carry the heaviest load when temperatures are lowest and the system has the least margin.

Ductwork in a house that has run several different systems over its life accumulates more than dust. Joints get resealed, runs get rerouted, and the insulation around them reflects what each previous contractor decided at the time. Half the homes in Schenectady County, New York were built in 1956 or earlier (2020-2024 ACS 5-year). When a heat pump in this county starts performing poorly, what the opened unit shows a contractor is only part of the answer. The duct connections, the condition of the existing runs, and what the electrical has been asked to carry since the house was last rewired can each produce symptoms that look like equipment failure and are not.
The Parts of a Heat Pump a Contractor Checks First

The outdoor unit sits outside the house and holds the compressor and condenser coil, which together do the core work of moving heat in or out depending on the season. When a heat pump stops heating or cooling, the compressor and the coil are where a contractor looks first. A failed compressor or a damaged coil will shut the whole system down.
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 cause loss of airflow or temperature problems when they go wrong. The refrigerant lines run between the two units, and the reversing valve inside the system is what lets it switch between heating and cooling modes. A stuck reversing valve is a common reason a heat pump works in one mode but not the other.
The drawing shows a typical layout, and a licensed contractor will determine which parts apply to your specific system and home.
Get matched in Schenectady CountySchenectady County by the Numbers
248 severe weather events were recorded in Schenectady 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 Schenectady County, New York were built in 1956 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesSchenectady County, New York holds 71,244 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 64.0% of the occupied homes in Schenectady County, New York (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesSevere Weather Events in Schenectady County
Schenectady County weather puts real stress on heat pump systems, which have to work harder and cycle more often when conditions turn extreme. How much stress depends on local history, and that record shapes how often repair needs come up.
248 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.