Tell us about the job
Takes about a minute. No obligation.
Sizing a central AC system for a house in Coweta County starts with what the climate actually asks of the equipment here. 221 severe weather events were recorded in Coweta County, Georgia between 2015 and 2024. At that rate, severe weather is part of the normal operating life of a system in this area, which means a contractor working an installation quote has to factor in that sustained load when selecting equipment grade, refrigerant line specs, and how the unit is mounted and secured. A system sized only to square footage, without accounting for what the local weather regularly puts it through, gets undersized for the real job.
Ductwork that was sized and routed for an older generation of equipment often falls short when a contractor fits a modern central AC system. Half the homes in Coweta County, Georgia were built in 1999 or earlier (2020-2024 ACS 5-year). A house that age carries ducts laid out for different static pressure and airflow than today's units demand, and a contractor has to measure what is there before they can say whether it will carry the new system or need work first. The electrical side follows the same logic: panels from that era were not built around the draw of current equipment, and the service has to be confirmed before a unit goes in.
What Gets Installed With a New Central AC
The outdoor condenser unit sits on a concrete pad outside the house and holds the compressor and condenser coil, which do the heavy work of the system. Inside, the air handler or furnace with an evaporator coil mounts in a utility closet, basement, or attic and connects to the duct system to move conditioned air through the house.
The thermostat goes on an interior wall where it reads the air temperature and tells the rest of the system when to run. A refrigerant line set runs between the indoor and outdoor units, and a condensate drain line carries moisture pulled from the air to a floor drain or outside.
The drawing shows a typical layout, and a licensed contractor determines exactly what applies to your home and its existing setup.
Get matched in Coweta CountyCoweta County by the numbers
221 severe weather events were recorded in Coweta County, Georgia 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 Coweta County, Georgia were built in 1999 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCoweta County, Georgia holds 59,197 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 78.4% of the occupied homes in Coweta County, Georgia (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesRules & Standards Behind Central AC Installation in Coweta County, Georgia8 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.
Severe Weather Events in Coweta County
Weather puts a load on HVAC equipment, and that load is shaped by what actually happens in this area. A system sized and installed for local conditions handles demand better than one spec'd to a national average.
221 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.