Tell us about the job
Takes about a minute. No obligation.
Sizing a central AC system for a Hempstead County home starts with what the compressor is actually being asked to carry each year. Homes in Hempstead County, AR run cooling about five months a year, from May through September. That much runtime accumulates on the contactor, the condenser fan motor, and especially the compressor, the parts that cycle every time the system calls for cooling. A unit that is undersized runs longer cycles to keep up, and those extra start-stop events are where mechanical wear concentrates. A contractor doing a load calculation here is not filling out a form; they are setting the condition under which that compressor survives a full run of summers.
Ductwork in Hempstead County's older housing was sized and routed for equipment that is no longer in it, and what a contractor finds when they open up the runs determines how a new central AC installation actually prices and scopes. Half the homes in Hempstead County, Arkansas were built in 1979 or earlier (2020-2024 ACS 5-year). That means a fair share of the homes a contractor walks into here have supply and return layouts that do not match what a modern system needs. The electrical side carries a similar question, since service panels in houses of that age were not built to the load a new central unit draws. A contractor who quotes before checking both is working from assumptions the house may not support.
What a Central AC System Is Made Of
The outdoor condenser unit sits outside the house, usually along a side wall or at the rear, and holds the compressor and condenser coil. Inside, the air handler or furnace cabinet stands in a utility space, basement, or closet and contains the evaporator coil along with the blower that moves air through the house.
The thermostat mounts on an interior wall where the homeowner sets and reads temperatures. A refrigerant line set runs between the outdoor unit and the indoor coil, and a condensate drain line carries moisture away from the evaporator coil to a floor drain or outside.
The drawing shows a typical layout, and a licensed contractor determines exactly what applies to your home.
Find a contractor in Hempstead CountyHempstead County by the Numbers
80 severe weather events were recorded in Hempstead 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 Hempstead County, Arkansas were built in 1979 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesHempstead County, Arkansas holds 9,642 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 71.7% of the occupied homes in Hempstead County, Arkansas (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCodes & Standards Governing Central AC Installation in Hempstead County, Arkansas10 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 Hempstead 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 Hempstead County
Weather puts a measurable load on cooling equipment, and that load varies by where you live. A contractor sizing and installing central AC in Hempstead County is working against the specific conditions this area sees, not a regional average.
80 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.