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The reversing valve on a heat pump works both directions, but the heating side carries the real load in Jasper County. Homes in Jasper County, MO run heat about seven months a year, from October through April. That means a contractor diagnosing a refrigerant problem or an efficiency drop has to account for accumulated cycling on the valve, the coil, and the compressor bearings before settling on a cause. A system that was sized tight when installed shows the strain in those parts first.
Half the homes in Jasper County, Missouri were built in 1986 or earlier (2020-2024 ACS 5-year). A heat pump that has been running in a house since the stock was new is likely drawing on parts that are harder to source with each passing season. When a contractor opens the unit, what decides the repair is whether a failed contactor, control board, or reversing valve is still in production, or whether the job becomes a search across specialty suppliers. Some components come back the same week. Others take long enough that the cost calculation shifts on the homeowner before the repair is complete.
The Parts of a Heat Pump a Contractor Checks During Repair
The outdoor unit is the piece most homeowners recognize first, a metal cabinet that sits outside on a pad or mounted to the house wall. Inside it are the compressor and the condenser coil. When the system stops moving heat, those two components are where a contractor looks first, because a failed compressor or a damaged coil is often what has stopped the unit from doing its job.
Inside the house, the air handler holds the evaporator coil and the blower fan, usually tucked in a closet, utility room, or attic space. The reversing valve, which sits inside the outdoor unit, is the part that lets a heat pump shift between heating and cooling. A faulty reversing valve shows up as a system that runs but delivers the wrong kind of air, and the expansion valve, which controls refrigerant flow between the two coils, can produce similar symptoms.
The drawing shows a general layout of these components, and a licensed contractor determines exactly which parts apply to your specific system and home.
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232 severe weather events were recorded in Jasper County, Missouri 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 Jasper County, Missouri were built in 1986 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesJasper County, Missouri holds 54,480 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 62.8% of the occupied homes in Jasper County, Missouri (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesSevere Weather Events in Jasper County
Weather puts work on heating and cooling equipment long before a breakdown shows up. In Jasper County, what the climate demands from a heat pump shapes how hard that equipment runs and how soon it needs attention.
232 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.