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A heat pump asked to run through most of September's first frosts and still be pulling heat in June puts its compressor and reversing valve through far more cycling than components on equipment that heats only in the coldest months. Homes in Kootenai County, ID run heat about ten months a year, from September through June. By the time a homeowner calls for repair, the compressor has logged the kind of start-stop history that shows up as worn contacts, degraded refrigerant charge, or a reversing valve that sticks between modes. A contractor diagnosing the system here starts there, with those parts, before looking at anything else.

Half the homes in Kootenai County, Idaho were built in 1996 or earlier (2020-2024 ACS 5-year). A heat pump sitting in a house that old has likely run through at least one refrigerant phase-out and possibly a full controls generation. When a contractor opens a unit, the question that shapes the repair bill is whether the failed component still has a supply chain. Some do. Some require sourcing through salvage channels, and a few are simply gone, which turns a repair call into a replacement conversation whether the homeowner expected that or not.
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 condenser coil. These are where most faults show up. A failed compressor stops the system from moving heat at all, and a damaged coil or refrigerant leak usually traces back here too.
Inside the house, the air handler contains the blower motor and evaporator coil, drawing air across the coil to heat or cool the space. The reversing valve, which lives in the outdoor unit, is what lets the system run in either direction, and a contractor checks it when the system heats but does not cool, or the reverse.
The drawing shows the general layout of a heat pump system, and a licensed contractor determines what applies to the specific equipment and configuration in your house.
Find a contractor in Kootenai CountyKootenai County, by the numbers
730 severe weather events were recorded in Kootenai County, Idaho 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 Kootenai County, Idaho were built in 1996 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesKootenai County, Idaho holds 80,260 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 71.3% of the occupied homes in Kootenai County, Idaho (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesRules & Standards Behind Heat Pump Repair in Kootenai County, Idaho1 sourced rules and standards
Licensing and Legal Requirements in Kootenai County, Idaho
Idaho requires a state certificate of competency for heating, ventilation and air conditioning work: it is unlawful to engage in the business, trade or practice without passing the examination and holding the certificate.
Severe Weather Events in Kootenai County
Extreme weather puts heat pumps under real stress, and how hard that equipment works over time shapes what kinds of repairs it eventually needs. The chart below shows recorded severe weather events in this county, year by year, so you can see the local load your system has been carrying.
730 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.
