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Sizing a furnace in Crawford County requires the contractor to work from the actual load the house carries, not a number pulled from a general chart. Homes in Crawford County, KS run heat about seven months a year, from October through April. The burner and heat exchanger cycle through that entire stretch without meaningful rest, and undersizing means those components run at or near capacity far more often than they should. A contractor quoting a new installation has to establish what the house actually demands before committing to equipment, because a unit that is too small earns its failure honestly, and one that is too large short-cycles and stresses the ignition system in a different way. The install has to be right from the first day.

Ductwork sized and routed for a much older generation of heating equipment may not move air the way a new furnace needs it to. Half the homes in Crawford County, Kansas were built in 1972 or earlier (2020-2024 ACS 5-year). That gap between what the house was built for and what runs in it now is where an installation job gets complicated or straightforward, and a contractor has to read the existing duct layout before anything else can be priced or planned. The electrical service gets that same look, because what the structure was wired to carry and what a new unit draws are questions the house answers on its own terms.
What Gets Installed With a New Furnace

The furnace itself sits in the basement, utility room, or mechanical closet and is the heart of what a contractor puts in. Inside it, the heat exchanger, burner assembly, and blower motor are the core components a homeowner is buying. The flue pipe or venting runs from the furnace to the outside, carrying combustion gases out of the house.
The thermostat mounts on a main living-area wall and is the control point the household touches every day. The contractor also connects the furnace to the existing plenum, which is the sheet-metal box that feeds conditioned air into the duct runs above or below it. A condensate drain line is added on high-efficiency models, running to a floor drain or utility sink.
The drawing shows a general layout of these components, and a licensed contractor determines exactly what applies to this house and its setup.
Get matched in Crawford CountyCrawford County, Kansas, by the numbers
142 severe weather events were recorded in Crawford County, Kansas 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 Crawford County, Kansas were built in 1972 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCrawford County, Kansas holds 18,126 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 60.8% of the occupied homes in Crawford County, Kansas (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCodes & Standards Governing Furnace Installation in Crawford County, Kansas4 sourced rules and standards
What the Installation Actually 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.
Severe Weather Events in Crawford County
Kansas weather puts real demands on heating equipment, and what happens in Crawford County shapes how hard a furnace has to work and for how long. Installation decisions made without accounting for local conditions are decisions made with incomplete information.
142 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.
