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Sizing a furnace correctly for this county is not a generic calculation. Homes in Graham County, KS run heat about eight months a year, from October through May. A unit that falls short of the true load runs longer cycles to close the gap, and that gap grinds through the burner, the heat exchanger, and the ignition system in ways a correctly matched install avoids. Contractors working a new installation here establish the actual load before they quote a unit, because undersizing gets exposed fast when the equipment barely stops running.
Ductwork in stock this old was laid out for equipment that no longer exists, and a new furnace does not automatically fit what the old one left behind. Half the homes in Graham County, Kansas were built in 1957 or earlier (2020-2024 ACS 5-year). That puts the duct system, not the furnace itself, at the center of what a contractor has to price before the job can move forward. If the existing runs cannot carry the airflow a modern unit requires, the installation scope changes before the new equipment is ever set in place.
What Gets Installed With a New Furnace
The furnace itself sits in a utility area, basement, or dedicated mechanical closet and is the central piece a contractor places first. A flue pipe runs from the unit to an exterior wall or the roofline, carrying combustion gases out of the house. The thermostat goes on an interior wall and gives the homeowner direct control over the system.
A gas line connection ties into the home's existing supply at the furnace cabinet, and a contractor fits or confirms the shut-off valve at that point. The air handler components, including the blower assembly inside the furnace cabinet, sit within the same unit and push conditioned air into the supply side of the home's duct system.
The drawing shows a typical layout, and a licensed contractor determines exactly what applies to this house.
Get matched in Graham CountyGraham County, Kansas, by the numbers
216 severe weather events were recorded in Graham 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 Graham County, Kansas were built in 1957 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesGraham County, Kansas holds 1,415 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 78.8% of the occupied homes in Graham County, Kansas (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesFurnace Installation Rules & Codes for Graham County, Kansas4 sourced standards and regulations
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 Graham County
Heating equipment in Graham County works against whatever the local climate puts out, and the pressure that weather places on a furnace shapes what a good installation looks like here. The chart below draws from recorded storm data for this county, because local conditions are part of the technical picture any contractor has to account for.
216 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.