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A contractor quoting a heat pump installation in Greene County has to get the sizing right before anything else on the job makes sense. 144 severe weather events were recorded in Greene County, Tennessee between 2015 and 2024. That steady accumulation of severe weather is the operating environment every system here runs against, and a unit sized too small will run short of what the house actually needs when conditions push hardest. A contractor who knows the area prices the equipment to the load, not to the floor space.
Ductwork sized and routed for an older system carries assumptions a heat pump does not share, and a contractor installing one in this county will open walls or crawlspaces to find out whether what is there moves air the way the new unit needs. Half the homes in Greene County, Tennessee were built in 1983 or earlier (2020-2024 ACS 5-year). That building history means the ducts are the first thing a contractor assesses, not the equipment on the truck. If the ductwork cannot deliver the airflow the heat pump requires, rebalancing or replacing sections of it is part of the job before the unit itself ever gets wired in.
What Gets Installed With a New Heat Pump
The outdoor unit is the piece most homeowners notice first. It sits on a pad beside the house and holds the compressor and one set of coils. Inside, an air handler mounts in a utility closet, attic, or basement and moves conditioned air through the home. Together these two units are what a Heat Pump installation puts in place.
A refrigerant line set runs between the outdoor unit and the air handler, connecting the two. A thermostat goes on an interior wall where it reads the temperature of the living space and tells the system when to run. Some installations also include a supplemental electric heat strip inside the air handler, which a contractor fits when the load calls for it.
The drawing shows a typical layout, and a licensed contractor determines exactly how each piece is positioned and configured for this particular house.
Find a contractor in Greene CountyGreene County by the numbers
144 severe weather events were recorded in Greene County, Tennessee 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, Tennessee were built in 1983 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesGreene County, Tennessee holds 32,697 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 77.1% of the occupied homes in Greene County, Tennessee (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesRules & Standards Behind Heat Pump Installation in Greene County, Tennessee1 sourced rules and standards
Licensing Rules for Greene County, Tennessee
Tennessee licenses contractors by classification, and HVAC, refrigeration and gas piping is one of them — a sub-classification of mechanical contracting on the licence the Board for Licensing Contractors issues.
Severe Weather Events in Greene County
Heating and cooling equipment in Greene County works against whatever the local climate delivers, and that workload shapes what a heat pump needs to handle over its life. Weather history is part of sizing and installing equipment that holds up here.
144 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.