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A contractor quoting a furnace repair in Union County has to sort out what actually wore the equipment down. 96 severe weather events were recorded in Union County, Iowa between 2015 and 2024. At that rate, severe weather is a real but occasional presence, not the grinding seasonal load that steadily degrades heat exchangers and controls. A furnace that failed here most likely failed because of age, a neglected filter schedule, or an install that was never quite right. The contractor checks those first, and the weather record does not change that order.
Furnaces in houses this old have often been replaced once or more since the house was built, but each replacement worked around what was already there rather than starting clean. Half the homes in Union County, Iowa were built in 1962 or earlier (2020-2024 ACS 5-year). That gap between the building and what runs in it now means the equipment a contractor opens may be from a different era than the house itself, and sourcing parts for it is where a repair either moves forward or stalls. A contractor who can open the unit and identify the system's generation before quoting gives the homeowner a realistic picture of what the repair actually requires.
The Parts of a Furnace a Contractor Checks First
The furnace itself sits in a utility space, basement, or closet and is the piece a contractor goes to first. Inside it, the heat exchanger and the burner assembly are the parts most likely to be behind a heating failure. A cracked heat exchanger or a burner that won't light stops the whole system.
The blower motor moves conditioned air out through the supply side of the house and sits inside the furnace cabinet. Alongside it, the flue or vent pipe carries exhaust gases out of the home, and the thermostat on the wall is the control signal that tells the furnace when to run. A fault in any of these shows up as a symptom the rest of the system can't work around.
The drawing shows a general layout of the system, and a licensed contractor determines which components apply to your specific home.
Get matched in Union CountyUnion County, Iowa, by the numbers
96 severe weather events were recorded in Union County, Iowa 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 Union County, Iowa were built in 1962 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesUnion County, Iowa holds 5,785 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 72.1% of the occupied homes in Union County, Iowa (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesFurnace Repair Rules & Standards on Record for Union County, Iowa5 sourced rules and standards
What the repair visit looks like
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.
Licensing and Legal Requirements in Union County, Iowa
Iowa requires a state licence to install or repair HVAC, refrigeration, mechanical or plumbing systems, and to operate as a contractor, with exceptions listed in section 105.11.
Severe Weather Events in Union County
Hard weather puts hours on a furnace fast, cycling it harder and more often than mild seasons ever would. How much of that load lands on equipment in this area shapes what repair work looks like here.
96 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.