Tell us about the job
Takes about a minute. No obligation.
Sizing and installation quality matter more here than a contractor working a cooler market might expect. Homes in Horry County, SC run cooling about five months a year, from May through September. The compressor, condenser fan, and contactor run hard through that stretch, cycling through the hottest part of the calendar repeatedly. A system that was undersized at install, or charged and balanced in a hurry, carries that mistake into every subsequent season. A licensed contractor doing a new install in this county has to get the load calculation right the first time, because the equipment will not hide a sloppy start for long.
Existing ductwork is what decides how an installation job goes here, and whether what is already in the walls can carry a new system is answered with a tape measure and a load calculation, not by looking at the unit on the truck. Half the homes in Horry County, South Carolina were built in 1999 or earlier (2020-2024 ACS 5-year). That distribution matters for installation because ductwork laid out for equipment no longer in these houses may run the wrong routes, hold the wrong static pressure, or lack the return paths a modern central system draws on. A contractor who quotes the equipment before assessing the duct layout is pricing the simpler half of the job first.
What Gets Installed With a New Central AC
The outdoor condenser unit sits on a concrete pad beside the house and holds the compressor and condenser coil, the two components that do the heaviest work in the system. Inside, the air handler or furnace-and-coil combination lives in a utility closet, basement, or attic and is the piece that actually moves conditioned air into your living space.
The refrigerant lines run between the outdoor unit and the indoor coil, connecting the two halves of the system through the wall or floor. A new thermostat gets mounted on an interior wall and gives you control over the whole system from a single point.
The drawing shows a representative layout, and a licensed contractor determines exactly what applies to your home and its existing setup.
Get matched in Horry CountyHorry County, by the numbers
211 severe weather events were recorded in Horry County, South Carolina 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 Horry County, South Carolina were built in 1999 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesHorry County, South Carolina holds 217,419 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 77.3% of the occupied homes in Horry County, South Carolina (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesRules & Standards Governing Central AC Installation in Horry County, South Carolina9 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.
Licensing and Legal Requirements in Horry County, South Carolina
South Carolina requires a mechanical contractor license for contracting work whose total cost of construction is greater than ten thousand dollars.
Severe Weather Events in Horry County
Weather puts real load on cooling equipment, and Horry County's climate shapes what a system here has to handle season after season. That load is a sizing and installation question, which is why local weather history belongs on a page about putting in new equipment.
211 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.