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A contractor working a central AC repair in Mobile County has to settle one question before they can write a quote: how much of what they are looking at is wear from the system running hard against real conditions, and how much is something else. 238 severe weather events were recorded in Mobile County, Alabama between 2015 and 2024. At that rate, severe weather is a standing condition here, and it shows up inside equipment. Capacitors, contactors, and compressor windings all carry that history, and a contractor checks them against it before pointing at anything simpler.
Ductwork in a house this age has already outlasted at least one previous system, and the central AC running in it now is not the original equipment. Half the homes in Mobile County, Alabama were built in 1980 or earlier (2020-2024 ACS 5-year). What a contractor finds once the unit is opened is the question that decides the repair: whether the compressor, the coil, or the control board takes a part that is still manufactured, or one that has to be sourced around. A house that has been adapted across generations of equipment can sit around a system whose replacement components are already scarce, and that scarcity is what sets the final scope.
The Parts of a Central AC a Contractor Checks First
The outdoor condenser unit sits outside the house, usually on a concrete pad beside the foundation, and it is where heat is released. The indoor air handler or furnace sits inside, often in a closet, attic, or utility room, and it moves cooled air through the house. These two units are the first places a contractor looks when the system stops performing.
The copper refrigerant lines run between the two units, and a fault in those lines is a common reason cooling fails. The evaporator coil sits inside the air handler, and the contactor, capacitor, and other electrical components sit inside the outdoor unit. A contractor works through each of these when diagnosing what broke down.
The drawing shows a typical layout, and a licensed contractor determines which parts and conditions apply to your specific home.
Get matched in Mobile CountyMobile County, by the numbers
238 severe weather events were recorded in Mobile 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 Mobile County, Alabama were built in 1980 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesMobile County, Alabama holds 186,082 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 Mobile County, Alabama (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCodes & Standards Governing Central AC Repair in Mobile County, Alabama9 sourced rules and standards
What Happens When a Contractor Comes Out
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 Rules for HVAC Repair in Mobile 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 Mobile County
Extreme weather puts real stress on central AC systems, running them harder and longer than steady conditions ever would. How often that happens in Mobile County shapes how much wear a unit accumulates and what repair needs tend to look like here.
238 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.