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Sizing a central AC system for Edmunds County starts with what the compressor is actually asked to do here. Homes in Edmunds County, SD run cooling about two months a year, from July through August. A unit that sat dormant through a long off-season can mask a wiring fault, a loose contactor, or a refrigerant charge that is slightly off until temperatures spike and the system has to run hard. A contractor doing an installation in this county has to account for that idle period in how they commission and test the equipment, because a quick startup check on a mild day will not surface every problem a July heat load will.
Ductwork laid in for a furnace and left in place carries assumptions about airflow that do not automatically transfer to a central AC system. Half the homes in Edmunds County, South Dakota were built in 1967 or earlier (2020-2024 ACS 5-year). A contractor putting in a new unit has to assess whether those runs, their sizing, and their routing will move the volume a modern system needs, before any equipment gets priced or ordered. Where the ducts fall short, the installation scope changes. The electrical service gets checked on the same visit, since panels in houses of that generation were not sized with central cooling in mind.
The Parts of a Central AC System Being Installed
The outdoor unit sits on a concrete pad beside the house and holds the compressor and condenser coil. Inside, the air handler or furnace-based evaporator coil lives in a closet, basement, or attic and is the piece that conditions the air before it moves through the house. These two units are what a contractor is placing and connecting.
A copper refrigerant line set runs between the indoor and outdoor units, linking the two halves of the system. The thermostat goes on an interior wall and is what the homeowner uses to control the whole thing. A condensate drain line carries moisture away from the indoor coil to a floor drain or outside.
The drawing shows the general layout of a central AC system, and a licensed contractor determines exactly how each piece fits the conditions of your particular house.
Find a contractor in Edmunds CountyEdmunds County, by the numbers
193 severe weather events were recorded in Edmunds County, South Dakota 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 Edmunds County, South Dakota were built in 1967 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesEdmunds County, South Dakota holds 1,898 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 81.1% of the occupied homes in Edmunds County, South Dakota (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCodes & Standards Governing Central AC Installation in Edmunds County, South Dakota8 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.
Severe Weather Events in Edmunds County
Weather puts a measurable load on heating and cooling equipment, and that load varies by location. A central AC system installed in Edmunds County has to be sized and specified for what the local climate actually demands, which is why the record of severe weather events here belongs on a page about installation.
193 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.