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A furnace in this area runs hard across the cold half of the calendar. Homes in Aurora County, SD run heat about eight months a year, from October through May. The burner, the ignition system, and the heat exchanger cycle through that load every year, and the wear on them accumulates in ways that controls and electrical components do not match. When a contractor opens a furnace here for a repair, cracks in the heat exchanger and carbon buildup at the burner ports are what they check before anything else, because those are the parts that have been working.
Ductwork installed to carry a different system, sealed with materials that harden and crack over time, can turn a straightforward furnace repair into a broader job once a contractor gets into the system. Half the homes in Aurora County, South Dakota were built in 1962 or earlier (2020-2024 ACS 5-year). When the furnace in a house that old is opened, what the contractor finds in the surrounding duct runs often determines whether a repair is clean or complicated. Gaps, collapsed flex runs, and deteriorated joints add to the diagnostic picture even when the furnace fault itself is simple.
The Parts of a Furnace a Contractor Checks First
The furnace itself sits in a basement, utility closet, or mechanical room and is the heart of the system. Inside it, the heat exchanger is the piece a contractor looks at closely during a repair call. Cracks or failures there affect both performance and safety, which is why it is the first suspect when something feels wrong.
The blower motor and its fan assembly sit inside the furnace cabinet and push conditioned air out into the home. The burners, the igniter, and the flame sensor all work together at the point where combustion happens. When the furnace short-cycles, fails to start, or runs without producing heat, those components are where a contractor begins.
The drawing shows the general layout of a furnace system, and a licensed contractor determines which parts apply to your specific home and situation.
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 Behind Furnace and HVAC Repair in Aurora County, South Dakota4 sourced rules and standards
What Happens When the Contractor Comes Out
Non-weatherized gas furnaces manufactured on or after November 19, 2015 must reach 80.0 percent AFUE.
Non-weatherized oil-fired furnaces manufactured on or after November 19, 2015 must reach 83.0 percent AFUE.
Mobile home gas furnaces manufactured on or after November 19, 2015 must reach 80.0 percent AFUE.
Non-weatherized gas furnaces manufactured on or after December 18, 2028 must reach 95.0 percent AFUE, up from the 80.0 percent minimum that applies to units manufactured before that date.
Severe Weather in Aurora County
Heating equipment in South Dakota works against outdoor conditions, and those conditions leave a record. How hard the weather presses on a furnace over the years is part of what determines how often it needs attention.
136 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.