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Sizing a central AC system in this county is not a generic calculation. Homes in Comanche County, KS run cooling about four months a year, from June through September. The compressor starts and stops through every one of those months, and the condenser fan and contactor carry that same load. An undersized unit will run longer cycles trying to meet demand, and the wear on those parts adds up faster than it would in a place where the season is shorter. A contractor has to get the load calculation right before anything else, because a system that is marginal on capacity has nowhere to hide here.
Ductwork laid down to carry a different system than the one a contractor is installing now is what drives the scope of most central AC jobs here. Half the homes in Comanche County, Kansas were built in 1947 or earlier (2020-2024 ACS 5-year). What that means on an installation is that a contractor pulling permits for a new unit has to assess whether the existing trunk lines and branch runs will move the air a modern system expects them to move, and whether the electrical service will carry the load. If the ductwork falls short, the equipment order waits.
What a Central AC System Includes
The outdoor condenser unit sits on a concrete pad beside the house and holds the compressor and condenser coil. Inside, the air handler or furnace blower sits in a utility closet, basement, or attic and moves conditioned air through the home. These two units are what a homeowner is buying when they commit to a central AC installation.
A copper refrigerant line set runs between the outdoor and indoor units, connecting the two halves of the system. A thermostat mounts on an interior wall and gives the homeowner control over when the system runs and what temperature it holds.
The drawing shows a typical layout, and a licensed contractor determines exactly what applies to this house.
Get matched in Comanche CountyComanche County, Kansas, by the numbers
83 severe weather events were recorded in Comanche 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 Comanche County, Kansas were built in 1947 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesComanche County, Kansas holds 1,016 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 73.4% of the occupied homes in Comanche County, Kansas (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesRules & Standards Governing Central AC Installation in Comanche County, Kansas8 sourced rules and standards
What the installation 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.
Severe Weather Events in Comanche County
Kansas weather puts real demands on cooling equipment, and Comanche County gets its share of what the sky can deliver. How hard a system has to work, and how long it holds up, is shaped by local conditions.
83 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.