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A contractor quoting a central AC install in Baldwin County has to size the system for what the air here actually does, not for what a catalog says a house of that square footage needs. 192 severe weather events were recorded in Baldwin County, Alabama between 2015 and 2024. At that rate of severe weather, the cooling load swings hard and often, and a system that fits the numbers on paper but was not installed tight will lose efficiency sooner than one spec'd and commissioned for conditions like these. Brand matters less than load calculations and the quality of the ductwork and refrigerant charge the contractor leaves behind.
Ductwork laid down for an older system was designed around that system's airflow demands, and a new central AC unit does not inherit those assumptions. Half the homes in Baldwin County, Alabama were built in 1999 or earlier (2020-2024 ACS 5-year). What a contractor has to settle before anything else is whether the existing duct layout will move air the way the new equipment requires, and whether the electrical service will carry the load without an upgrade. Those two questions are answered by inspection, not by the age on the permit, but the age of a house shapes how often the answers complicate the job.
What Gets Installed With a New Central AC
The outdoor condenser unit sits outside the house, usually on a concrete pad at ground level, and holds the compressor and condenser coil. Inside, the air handler mounts in a utility closet, attic, or basement and contains the evaporator coil and blower that circulates air through the home.
A refrigerant line set runs between the two units, connecting the outdoor and indoor sides of the system through an exterior wall. The thermostat goes on an interior wall where it reads the air temperature and signals the system to run.
The drawing shows a typical layout, and a licensed contractor determines what applies to your specific house.
Get matched in Baldwin CountyBaldwin County, by the numbers
192 severe weather events were recorded in Baldwin 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 Baldwin County, Alabama were built in 1999 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesBaldwin County, Alabama holds 132,258 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 77.6% of the occupied homes in Baldwin County, Alabama (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCodes & Standards Governing Central AC Installation in Baldwin County, Alabama9 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 Baldwin 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 Baldwin County
Weather in this part of Alabama puts real demands on cooling equipment, and those demands shape what a proper installation needs to handle. How hard a system works, and how long it lasts, is a local question.
192 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.