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On a heat pump repair call here, a contractor goes straight to the compressor and the reversing valve. Homes in Wahkiakum County, WA run heat about ten months a year, from September through June. Cycling between heating and cooling modes for that portion of the calendar puts stress on the reversing valve solenoid that a purely cooling system never sees, and the compressor accumulates starts across both modes. A unit that was undersized at install runs longer each cycle to hold setpoint, which accelerates wear on the compressor windings and contacts. The refrigerant circuit and the defrost board get looked at before the age tag does.
Half the homes in Wahkiakum County, Washington were built in 1978 or earlier (2020-2024 ACS 5-year). A house built that long ago carries ductwork that has had time to separate at joints, accumulate blockage, or lose its seal entirely. When a contractor opens a heat pump for repair, what they find inside the equipment is only part of the picture. The ductwork feeding and returning from it decides whether a repaired system delivers what it should, and in stock this age, that is where the hidden scope tends to be.
The Parts of a Heat Pump a Contractor Checks First
The outdoor unit sits on a pad beside the house and holds the compressor and the outdoor coil. The compressor is the heart of the system, and when a heat pump stops heating or cooling entirely, that is where a contractor looks first. The outdoor coil, the fan above it, and the refrigerant lines running into the house each tell their own story about where a fault began.
Inside the house, the air handler moves conditioned air through your home and contains the indoor coil, the blower motor, and the expansion valve. The reversing valve, which is what allows a heat pump to shift between heating and cooling, sits in the refrigerant circuit and is a common repair target when the system runs but delivers the wrong temperature.
The drawing shows a typical heat pump layout, and a licensed contractor will assess which components apply and what condition each is in for your specific home.
Get matched in Wahkiakum CountyWahkiakum County, by the record
5 severe weather events were recorded in Wahkiakum County, Washington 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 Wahkiakum County, Washington were built in 1978 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesWahkiakum County, Washington holds 2,250 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 83.2% of the occupied homes in Wahkiakum County, Washington (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesRules & Standards for Heat Pump Repair in Wahkiakum County, Washington1 sourced rules and standards
Licensing Rules for HVAC Work in Wahkiakum County, Washington
Washington requires contractor registration rather than an HVAC licence: every contractor must register with the Department of Labor and Industries, and advertising, bidding or working as a contractor without that registration is a gross misdemeanour.