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Sizing a central AC system here starts with what the compressor, contactor, and condenser fan are actually asked to carry each year. Homes in Phillips County, AR run cooling about five months a year, from May through September. A compressor starting and stopping across that kind of season puts real hours on the parts that cycle most, and a unit that is undersized will show it faster because there is less idle time between runs. A contractor quoting an install in Phillips County works out the full cooling load for the house before specifying equipment, because getting that number wrong shows up in the compressor well before the system reaches the end of its expected life.
Ductwork in a house this old was sized for equipment that no longer exists, and a new central AC system draws differently than what those ducts were originally built around. Half the homes in Phillips County, Arkansas were built in 1974 or earlier (2020-2024 ACS 5-year). That gap is where an installation job either stays straightforward or expands: a contractor who opens the walls to check duct sizing and electrical service before quoting is accounting for what a house of this vintage actually contains. The ducts may need modification; the panel may need evaluation for the load a modern unit draws.
What a Central AC System Includes
The outdoor condenser unit sits on a concrete pad outside the house and holds the compressor and the condenser coil. Inside, the air handler or furnace-mounted evaporator coil lives in a utility space, basement, or closet. These are the two main pieces a contractor places when setting up a central system.
The thermostat mounts on an interior wall where it reads the temperature of the living space and signals the system to run. A contractor also installs the refrigerant line set, a pair of copper lines that run between the indoor and outdoor units through the wall or floor, and the condensate drain line that carries moisture away from the evaporator coil.
The drawing shows a typical layout, and a licensed contractor determines exactly how the system fits the specific layout and conditions of your home.
Find a contractor in Phillips CountyPhillips County, Arkansas, by the numbers
42 severe weather events were recorded in Phillips County, Arkansas 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 Phillips County, Arkansas were built in 1974 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesPhillips County, Arkansas holds 8,355 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 51.2% of the occupied homes in Phillips County, Arkansas (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesRules & Standards Behind Central AC Installation in Phillips County, Arkansas10 sourced rules and standards
What happens during an HVAC installation in Phillips 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.
Licensing and Legal Requirements in Phillips County, Arkansas
An Arkansas HVACR licence is good across the state: no city or county may require its own licence to do HVACR work, though local permits and inspections still apply.
Arkansas requires an HVACR licence or registration: it is unlawful to do HVACR work without the appropriate one unless the chapter exempts you.
Severe Weather Events in Phillips County
Weather puts a load on HVAC equipment, and that load varies by where you live. A system sized and installed for what Phillips County actually experiences will run differently than one spec'd for somewhere else.
42 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.