Tell us about the job
Takes about a minute. No obligation.
Sizing a central AC system in Polk County starts with what the house actually demands, not with a weather record that would justify heavy contingency. 73 severe weather events were recorded in Polk County, Georgia between 2015 and 2024. At that rate, severe weather is an occasional presence rather than a steady operating condition, which means a contractor's first job is accurate load calculation and a clean installation rather than compensating for cumulative storm load. A system that underperforms here is almost always pointing at duct work, equipment sizing, or refrigerant charge.
Ductwork laid down for an earlier generation of equipment carries assumptions about airflow, routing, and load that a modern central AC system does not share. Half the homes in Polk County, Georgia were built in 1983 or earlier (2020-2024 ACS 5-year). A contractor installing a new unit in this kind of stock has to assess whether those ducts move enough air through the right paths before the equipment question even opens up. Electrical service in houses of that era also gets checked against what a new system draws. The ductwork is where the installation either fits the house or does not.
What Gets Installed With a New Central AC
The outdoor unit, called the condenser, sits on a pad outside the house and holds the compressor and the condenser coil. Inside, an air handler or furnace with an evaporator coil mounted above it occupies a closet, utility room, or attic space. Those two units are the core of what a contractor brings to the job.
A refrigerant line set runs between the indoor and outdoor units, connecting them through an exterior wall. A thermostat goes on an interior wall where it can read the home's air temperature and signal the system to run. The contractor also ties the system into the home's existing supply and return vents.
The drawing shows a typical layout, and a licensed contractor determines what applies to your specific house.
Get matched in Polk CountyPolk County, Georgia, by the numbers
73 severe weather events were recorded in Polk 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 Polk County, Georgia were built in 1983 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesPolk County, Georgia holds 17,368 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 66.0% of the occupied homes in Polk 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 Polk 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 Polk County
Weather stress is a direct load on cooling equipment: the harder the climate pushes, the harder the system works to hold a set temperature. What happens in Polk County shapes what size and grade of equipment a contractor installs here.
73 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.