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A contractor quoting furnace repair here starts by ruling out the obvious suspects: a heat exchanger that has cycled too many times, a blower motor running on worn bearings, an igniter that simply reached the end of what it had. 55 severe weather events were recorded in Kendall County, Texas between 2015 and 2024. At that rate, severe weather is something a system here encounters now and then, not a steady load working through every component year after year. A furnace that breaks down in Kendall County broke down because something wore out, and that is where a contractor looks first.
Furnace parts get discontinued on a timeline tied to the equipment, not the house around it. Half the homes in Kendall County, Texas were built in 2002 or earlier (2020-2024 ACS 5-year). Stock built around that year is recent enough that the furnaces running in it tend to fall within ranges that parts suppliers still actively carry. A contractor opening a failed heat exchanger or a cracked burner assembly here is working on a system whose components have not yet drifted into obsolescence. That changes the repair calculus: the diagnostic work is what determines the bill, and the sourcing rarely is.
The Parts of a Furnace a Contractor Checks First
The furnace cabinet sits in a utility room, basement, or closet and holds the components a contractor goes to first when something fails. Inside it, the heat exchanger does the main work of warming air; a cracked or corroded exchanger is one of the more serious faults a contractor will look for. The burners feed it, and when the furnace runs poorly or not at all, those burners and the igniter that lights them are early stops on the diagnostic.
The blower motor and its fan wheel sit at the bottom of the cabinet and push conditioned air into the supply ducts. The flue pipe runs from the cabinet up and out of the house, carrying combustion gases away; a blocked or damaged flue shows up as a safety lockout. The control board ties these pieces together, reading sensors and telling each part when to run, and a fault there can mimic problems in almost any other component.
The drawing shows a typical furnace layout, and a licensed contractor determines which parts apply to the specific equipment and conditions in your home.
Find a contractor in Kendall CountyKendall County, by the numbers
55 severe weather events were recorded in Kendall County, Texas 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 Kendall County, Texas were built in 2002 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesKendall County, Texas holds 19,213 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 79.5% of the occupied homes in Kendall County, Texas (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCodes & Standards Covering Furnace Repair in Kendall County, Texas5 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.
Licensing and Legal Requirements in Kendall County, Texas
In Texas a person may not engage in air conditioning and refrigeration contracting unless that person holds a license issued under the state air conditioning and refrigeration contractor law.
Severe Weather Events in Kendall County
Kendall County weather puts real stress on heating equipment, and stress shortens the life of components that were already working hard. Repair demand here follows local conditions, which is why the history below matters for any furnace service conversation in this area.
55 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.