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A central AC system in Gwinnett County has been asked to do its job through a steady pattern of severe weather, and that load accumulates in the components that work hardest. 185 severe weather events were recorded in Gwinnett County, Georgia between 2015 and 2024. At that rate, wear on contactors, capacitors, and refrigerant lines reflects what the equipment has actually been through, and a contractor assessing a repair here has to weigh that history against the age and condition of each part before settling on a cause. A failed component in a system with this kind of record behind it calls for a different diagnostic path than one that failed early with little stress behind it.
Ductwork installed for one system and left in place through successive replacements accumulates mismatches that show up as repair calls. Half the homes in Gwinnett County, Georgia were built in 1996 or earlier (2020-2024 ACS 5-year). A central AC system that has been swapped in after the original build inherits whatever the previous contractor left behind: leaks at joints, undersized runs, sections that were never sealed properly. When a repair tech pulls a unit and the cooling problem does not resolve, the ductwork is where they look next. That is the variable the age of the housing actually loads.
The Parts of a Central AC a Contractor Checks First
The outdoor condenser unit sits outside the house, usually beside or behind it, and it is where heat gets released to the outside air. The indoor air handler or furnace blower sits inside, often in a closet, attic, or utility room, and it pushes cooled air through the house. These two units are where contractors start when the system stops keeping up.
The copper refrigerant lines run between the indoor and outdoor units, and the evaporator coil sits directly above the air handler, where the cooling actually happens at the air. The expansion valve and the electrical contactors, capacitors, and controls are spread across both units, and any one of them can be the source of a failure.
The drawing shows a typical central AC layout, and a licensed contractor will determine which parts and access points apply to your specific home.
Get matched in Gwinnett CountyGwinnett County, by the numbers
185 severe weather events were recorded in Gwinnett 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 Gwinnett County, Georgia were built in 1996 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesGwinnett County, Georgia holds 340,962 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 66.3% of the occupied homes in Gwinnett County, Georgia (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesRules & Standards Behind AC Repair in Gwinnett County, Georgia8 sourced rules and standards
What HVAC Repair Looks Like in Gwinnett County
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 Gwinnett County
Georgia heat and humidity already push central AC equipment hard through a long cooling season. Storm activity adds another layer of strain, knocking out power, spiking demand when systems restart, and accelerating wear that eventually calls for a repair call.
185 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.