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A heat pump running through a Greene County winter is doing its hardest work when outdoor temperatures push it closest to its capacity limits. Homes in Greene County, MS run heat about five months a year, from November through March. The compressor cycles more frequently in that range, and the defrost board earns its failures there too, calling on components that rarely get attention until the first cold week they refuse to work. A contractor diagnosing a repair here will check the refrigerant charge and the reversing valve before anything else, because those are the parts the heating load stresses first.
Heat pump repair here runs on what the opened unit turns out to contain: the compressor's actual condition, what the refrigerant circuit looks like, whether the contactors and reversing valve have held up. Half the homes in Greene County, Mississippi were built in 1987 or earlier (2020-2024 ACS 5-year). That span between when the houses were built and when a heat pump was put into them means the ductwork and electrical were already adapted before the current system arrived, so a contractor who finds a heat pump underperforming is not looking at the house as the constraint. The diagnosis lives inside the equipment.
The Parts of a Heat Pump a Contractor Checks During Repair
The outdoor unit is the piece most homeowners recognize on sight. It sits on a pad beside the house and holds the compressor, the condenser coil, and the fan. When a heat pump loses its ability to heat or cool, the compressor and coil are where a contractor looks first.
Inside the house, the air handler contains the blower motor, the evaporator coil, and the reversing valve that lets the system run in either direction. The refrigerant lines connecting the two units, along with the thermostat on the wall, round out what a contractor will work through when tracing a fault.
The drawing shows the general layout of a heat pump system, and a licensed contractor determines which components apply to your specific house and situation.
Find a contractor in Greene CountyGreene County by the Numbers
51 severe weather events were recorded in Greene County, Mississippi 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 Greene County, Mississippi were built in 1987 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesGreene County, Mississippi holds 5,190 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 82.2% of the occupied homes in Greene County, Mississippi (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesRepair Rules for Heat Pumps in Greene County, Mississippi1 sourced rules and standards
Licensing and Legal Requirements in Greene County, Mississippi
Mississippi licenses residential HVAC work at every tier and at any price: a subcontractor of any tier doing heating, ventilation or air conditioning work on a residential construction or improvement project must be licensed by the State Board of Contractors no matter the dollar amount.
Severe Weather Events in Greene County, Year by Year
Heat pumps carry the full load of heating and cooling through whatever the local climate delivers, and that workload is shaped by how hard the weather pushes the equipment over time. Greene County's storm history is part of that picture, which is why it belongs on a page about keeping heat pump systems running.
51 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.