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A heat pump running a repair call in San Juan County has usually earned it. Homes in San Juan County, WA run heat about ten months a year, from September through June. The compressor cycles through heating demand across most of that span, and the reversing valve switches modes whenever temperatures shift, which in island climates happens often enough that its seals and solenoid take real wear. When a contractor opens the system, the condition of those parts reflects a machine that sees sustained load rather than sporadic use. Refrigerant charge, reversing valve response, and compressor amp draw are the places a technician looks first, because that is where the accumulated cycling shows up.
A heat pump sitting in a house this old is almost certainly not the equipment the house started with, which means the repair a contractor scopes is defined by what they find once the unit is open, and by whether the parts that system takes are still in production. Half the homes in San Juan County, Washington were built in 1988 or earlier (2020-2024 ACS 5-year). That gap in years is where the repair work lives: the unit inside has its own history, separate from the structure around it, and a failed component in a system installed well after the house was built may or may not have a current replacement available.
The Parts of a Heat Pump a Contractor Checks First
The outdoor unit sits outside the house and holds the compressor and condenser coil. These are where a contractor starts 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 among the first things they rule out.
Inside the house, the air handler contains the evaporator coil and the blower. The air handler pushes conditioned air through the home, so a frozen coil, a failing blower motor, or a clogged drain line there will show up fast. The reversing valve, which sits in the outdoor unit, tells the system which direction to move heat and is another piece a contractor checks when the system runs but does not perform correctly.
The drawing shows the general layout of a heat pump system, and a licensed contractor determines which components apply and need attention in your specific home.
Get matched in San Juan CountySan Juan County, by the numbers
54 severe weather events were recorded in San Juan 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 San Juan County, Washington were built in 1988 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesSan Juan County, Washington holds 13,990 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 78.0% of the occupied homes in San Juan County, Washington (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesRules & Standards Governing Heat Pump Repair in San Juan County, Washington1 sourced rules and standards
Licensing and Legal Requirements in San Juan 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.
Severe Weather Events in San Juan County
Weather puts direct stress on heat pump systems, which run year-round and respond to every shift the climate delivers. How hard that equipment works, and how often it needs repair, is shaped by what happens outside in San Juan County.
54 severe weather events, 2015–2022. Source: NOAA National Centers for Environmental Information, Storm Events Database.