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Sizing a new central AC system in Hardeman County requires a contractor to account for the kind of sustained weather load this area actually carries. 113 severe weather events were recorded in Hardeman County, Texas between 2015 and 2024. At that rate, severe weather is part of the normal operating environment, not an outlier, and equipment sized for a gentler climate will be working against the conditions from the first cooling season. A contractor who ignores that record will produce a quote built around the wrong assumptions, and the homeowner ends up with a system that runs harder than it should from day one.
Existing ductwork in a house this old was sized and routed for a different era of equipment, and what a contractor finds when they trace it out determines the scope of the job more than any other single factor. Half the homes in Hardeman County, Texas were built in 1961 or earlier (2020-2024 ACS 5-year). That gap between when the house was built and what a modern central AC system asks of it is where the real installation decisions live: whether the existing runs can carry the load, whether returns are in the right places, and whether the electrical service can support the new unit without a panel upgrade.
What a Central AC System Includes
The outdoor condenser unit sits outside the house, usually along a side wall or at the back, and holds the compressor and coils that do the system's main work. Inside, the air handler or furnace-mounted evaporator coil sits in a utility closet, attic, or basement, where it picks up heat from the air moving through your home.
The refrigerant line set runs between those two units, connecting the indoor and outdoor sides through a small penetration in the wall. A thermostat mounts on an interior wall and is the one piece every household member will interact with directly, controlling when the system runs and at what target temperature.
The drawing shows a representative layout, and a licensed contractor will assess which configuration and components apply to your specific home.
Get matched in Hardeman CountyHardeman County, by the numbers
113 severe weather events were recorded in Hardeman 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 Hardeman County, Texas were built in 1961 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesHardeman County, Texas holds 1,808 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 73.9% of the occupied homes in Hardeman County, Texas (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesRules & Standards Governing Central AC Installation in Hardeman County, Texas9 sourced rules and standards
What the Installation Actually Looks Like
Split-system central air conditioners rated below 45,000 Btu/h manufactured on or after January 1, 2023 must meet a federal minimum of 13.4 SEER2.
Split-system central air conditioners rated at or above 45,000 Btu/h manufactured on or after January 1, 2023 must meet a federal minimum of 13.4 SEER2.
Split-system central air conditioners manufactured between January 1, 2015 and December 31, 2022 had to meet 13 SEER, the metric that preceded SEER2.
Single-package central air conditioners manufactured on or after January 1, 2023 must meet a federal minimum of 13.4 SEER2.
Space-constrained central air conditioners manufactured on or after January 1, 2023 must meet a federal minimum of 11.7 SEER2.
Federal efficiency standards for split-system central air conditioners and heat pumps are set on each certified combination of outdoor unit and indoor coil rather than on the outdoor unit alone.
Residential and light commercial air conditioning and heat pump systems assembled in the field, including mini-splits and unitary systems, may not be installed on or after January 1, 2025 using a refrigerant with a global warming potential above 700.
A field-assembled system whose specified components were all manufactured or imported before January 1, 2025 carries no installation compliance date under the refrigerant restrictions and may still be installed.
What Hardeman County, Texas Requires for HVAC Installation
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 Hardeman County
Weather puts load on HVAC equipment, and Hardeman County has its own weather history. What the climate does here shapes how hard a central AC system has to work and how well it needs to be sized and installed to hold up over time.
113 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.