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A contractor quoting a central AC install in Macon County has to account for what drove the old system out of service before settling on a replacement size and grade. 39 severe weather events were recorded in Macon County, Alabama between 2015 and 2024. At that rate, severe weather is an occasional event here, and a unit that wore out did so through ordinary seasonal cycling, not repeated storm stress. That distinction changes which equipment a contractor specifies and how they approach the ductwork assessment, because oversizing for a load this system never actually carried produces a worse install than one sized for how the house genuinely performs.
Ductwork laid down for an older generation of equipment carries assumptions about airflow, load, and static pressure that a modern central AC system does not share. Half the homes in Macon County, Alabama were built in 1979 or earlier (2020-2024 ACS 5-year). A contractor installing a new system in stock like this has to assess whether the existing duct runs can move what the new unit puts out, and whether the electrical service will carry it, before any equipment is priced. If the ducts cannot, the installation scope changes significantly. The equipment selection comes after that answer.
What Gets Installed With a New Central AC
The outdoor condenser unit sits on a pad outside 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-based evaporator coil assembly mounts in a utility closet, basement, or attic and is the piece that actually conditions the air moving through your home.
A refrigerant line set runs between the outdoor and indoor units, connecting them through an exterior wall, and a condensate drain line carries moisture pulled from your air out of the house. The thermostat goes on an interior wall and is what you see and use every day to control the whole system.
The drawing shows a typical layout, and a licensed contractor determines what fits the configuration of your house.
Get matched in Macon CountyMacon County, by the numbers
39 severe weather events were recorded in Macon County, Alabama 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 Macon County, Alabama were built in 1979 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesMacon County, Alabama holds 9,653 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 61.5% of the occupied homes in Macon County, Alabama (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesRules & Standards Governing Central AC Installation in Macon County, Alabama9 sourced rules and standards
What Happens When the Contractor Shows Up
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 Macon County, Alabama
Alabama requires state certification to do heating, air conditioning and refrigeration contracting: nobody may advertise, bid, pull permits or do the work unless the person in responsible charge is a certified contractor.
Severe Weather Events in Macon County
Weather swings put direct strain on cooling equipment, shortening its working life and raising the load it has to carry. How hard a system has to work is a local question, and the record below reflects what the climate here actually asks of it.
39 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.