Tell us about the job
Takes about a minute. No obligation.
Sizing a central AC system for this house means working out what the compressor is actually asked to do, not guessing from square footage alone. Homes in Wilson County, KS run cooling about four months a year, from June through September. A contactor that cycles through that load on an undersized or poorly matched system wears faster than the manufacturer's curve assumes. The condenser fan and compressor together log real hours each year, and a contractor who skips a proper load calculation leaves the homeowner with a system that runs long, short-cycles, or both. Duct leakage and refrigerant charge compound the problem once the heat is on.
Ductwork laid down for one generation of equipment does not automatically carry the next. Half the homes in Wilson County, Kansas were built in 1965 or earlier (2020-2024 ACS 5-year). A contractor sizing a new central AC unit here has to verify what the existing duct runs can actually move before the equipment choice means anything, because duct sizing and layout from that era were matched to systems that are long gone. Electrical service gets the same look: the load a modern central AC unit draws may exceed what the panel was built to feed. The unit itself gets selected after those two questions are answered.
What a Central AC Installation Covers
The outdoor condenser unit sits on a concrete pad beside the house and holds the compressor and condenser coil, the mechanical heart of the system. Inside, the air handler or furnace-mounted evaporator coil lives in a utility space, basement, or closet and is the piece that connects to your existing ductwork.
A refrigerant line set runs between those two units through the wall, carrying the working fluid that ties the indoor and outdoor sides together. The thermostat mounts on an interior wall and is what the homeowner uses to tell the whole system what to do.
The drawing shows a typical layout, and a licensed contractor determines exactly what applies to your house.
Get matched in Wilson CountyWilson County, Kansas, by the numbers
76 severe weather events were recorded in Wilson County, Kansas 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 Wilson County, Kansas were built in 1965 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesWilson County, Kansas holds 4,493 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 77.7% of the occupied homes in Wilson County, Kansas (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesRules & Standards for Central AC Installation in Wilson County, Kansas8 sourced rules and standards
What happens on installation day
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.
Severe Weather in Wilson County
Weather in Wilson County puts real demands on cooling equipment, from the load it carries on heavy days to the conditions a unit must survive year after year. How hard a system has to work, and how long it holds up, is partly a local question.
76 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.