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A compressor that starts cold after months of sitting will show different failure patterns than one ground down by continuous cycling. Homes in Aurora County, SD run cooling about three months a year, from June through August. Contactors corrode, capacitors lose charge-holding ability, and refrigerant lines develop slow leaks while the system stands idle. When a contractor opens a unit at the start of the season, dormancy damage is the first thing they price out, not cumulative wear from heavy runtime.
Ductwork laid in for one generation of cooling equipment and patched across several more carries wear that shows up as a repair problem rather than a duct problem. Half the homes in Aurora County, South Dakota were built in 1962 or earlier (2020-2024 ACS 5-year). A contractor pulling a failed capacitor or a seized compressor in a house this old is opening a system that has almost certainly run against leaking or undersized distribution for years. What looks like an equipment failure on the thermostat sometimes traces back to the duct runs starving the unit of return air. That changes both what gets replaced and what the repair costs.
The Parts of a Central AC a Contractor Checks First
The outdoor condenser unit sits outside the house, usually on a concrete pad at ground level, and it carries the compressor and the condenser coil. These are where a contractor starts when a system stops cooling or starts making noise, because a failed compressor or a fouled coil will shut down the whole system.
Inside the house, the air handler holds the evaporator coil and the blower fan, sitting in a closet, attic, or utility room and drawing warm air across the coil before pushing it through the ducts. The refrigerant line set runs between the two units, and the thermostat on the wall tells the whole system when to run.
The drawing shows a typical layout, and a licensed contractor assesses which components apply and what condition they are actually in at your house.
Find a contractor in Aurora CountyAurora County, South Dakota, by the numbers
136 severe weather events were recorded in Aurora 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 Aurora County, South Dakota were built in 1962 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesAurora County, South Dakota holds 1,261 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 72.7% of the occupied homes in Aurora County, South Dakota (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCodes & Standards Covering Central AC Repair in Aurora County, South Dakota8 sourced rules and standards
What HVAC Repair Looks Like in Aurora 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.
Severe Weather Events in Aurora County
Extreme weather puts real hours on cooling equipment. How often it hits Aurora County shapes how hard local systems work and how quickly wear adds up, which is why local repair needs look different here than elsewhere.
136 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.