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Sizing a heat pump in Tom Green County is a local engineering decision, not a catalog lookup. 350 severe weather events were recorded in Tom Green County, Texas between 2015 and 2024. At that rate, severe weather is a routine part of what every system installed here runs against, which means a contractor has to build that load into the sizing calculation from the start. A unit specified for a milder baseline will be undersized before the first summer is out, and undersized equipment cycles harder, shortening the life of the compressor and the refrigerant circuit. The install spec has to reflect what the climate actually asks of the equipment.
Ductwork sized and routed for a different era of equipment does not automatically carry a modern heat pump's airflow requirements. Half the homes in Tom Green County, Texas were built in 1980 or earlier (2020-2024 ACS 5-year). A contractor installing a heat pump in stock this old has to assess the existing duct system before anything else gets priced, because what the ducts can actually move determines whether the new unit performs as rated or fights the house it is in. The electrical service is the same story: panels from that period were not laid out with the draws a heat pump puts on them, and a licensed contractor will confirm capacity before the unit is ever ordered.
What a Heat Pump Installation Puts in Your Home
The outdoor unit sits on a pad beside the house and holds the compressor and the coil that exchange heat with the outside air. Inside, the air handler mounts in a utility space, attic, or closet and moves conditioned air through the home. These two units are the core of what a contractor installs.
A refrigerant line set runs between the outdoor unit and the air handler, connecting the two so the system can function as one. A thermostat goes on an interior wall where it reads the home's temperature and tells the system when to run. The contractor also installs a disconnect box near the outdoor unit as a local shutoff point.
The drawing shows a typical layout, and a licensed contractor determines exactly what goes where based on the specifics of your house.
Get matched in Tom Green CountyTom Green County, by the numbers
350 severe weather events were recorded in Tom Green County, Texas 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 Tom Green County, Texas were built in 1980 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesTom Green County, Texas holds 52,318 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 65.1% of the occupied homes in Tom Green County, Texas (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesHeat Pump Installation Rules for Tom Green County, Texas1 sourced standards and codes
Licensing and Legal Requirements in Tom Green County, Texas
In Texas a person may not engage in air conditioning and refrigeration contracting unless that person holds a license issued under the state air conditioning and refrigeration contractor law.
Severe Weather Events in Tom Green County
Weather swings put a measurable load on heating and cooling equipment, and that load shapes what a heat pump here has to handle year after year. Sizing and installing equipment without accounting for local conditions is how systems end up working harder than they were built to.
350 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.