Tell us about the job
Takes about a minute. No obligation.
A contractor quoting a central AC install in Limestone County is not just matching square footage to a unit. 228 severe weather events were recorded in Limestone County, Alabama between 2015 and 2024. At that rate, severe weather is part of the normal operating environment, and a system sized without accounting for it will run harder than it was built to. Ductwork placement, equipment ratings, and refrigerant line routing all get decided against what this area regularly puts a system through, not against what a manufacturer assumes as a baseline.
Ductwork laid down for an earlier generation of equipment is what a contractor runs into in a large share of Limestone County houses, and whether it will carry a modern central AC system is the first thing that has to be settled before anything else on the job can be priced. Half the homes in Limestone County, Alabama were built in 1998 or earlier (2020-2024 ACS 5-year). A house built in that period was ducted for a different standard of equipment, and the gap between what those runs were sized for and what a new system actually needs is where installations either stay straightforward or pick up scope. Electrical service in housing of that era is worth checking for the same reason.
What Gets Installed With a New Central AC
The outdoor unit, called the condenser, sits outside the house on a concrete pad 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 move conditioned air through the home.
A metering device, usually an expansion valve, connects the two main units and controls refrigerant flow between them. The thermostat mounts on an interior wall and gives the homeowner a single point of control over the whole system.
The drawing shows a typical layout, and a licensed contractor determines what applies to your house specifically.
Get matched in Limestone CountyLimestone County, by the numbers
228 severe weather events were recorded in Limestone 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 Limestone County, Alabama were built in 1998 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesLimestone County, Alabama holds 44,354 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 Limestone County, Alabama (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesRules & Standards for Central AC Installation in Limestone County, Alabama9 sourced rules and standards
What the installation looks like from your side
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 Limestone 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 Limestone County
Weather patterns in Limestone County put real stress on cooling equipment, from the load it carries day to day to the conditions under which it has to keep running. How hard a system works over its life is a local question, and the record below reflects the conditions that shape it.
228 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.