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A contractor quoting a furnace installation in Thomas County has to get the sizing right before anything else, because the burner and heat exchanger here carry a load that most residential equipment is not given much rest from. Homes in Thomas County, KS run heat about eight months a year, from October through May. A furnace that is undersized for this house will short-cycle through the cold months, stressing the ignition system and cracking the heat exchanger faster than a correctly sized unit would. Sloppy ductwork and a rushed combustion air setup compound that wear. A contractor has to run a proper load calculation on the actual house before settling on equipment size.
Ductwork laid out for an old gravity or early forced-air system carries assumptions about airflow, branch sizing, and return placement that a modern furnace does not share. Half the homes in Thomas County, Kansas were built in 1967 or earlier (2020-2024 ACS 5-year). A contractor pricing a furnace installation in housing that old has to assess whether existing ducts will actually deliver what the new equipment produces, and in many cases they will not without modification. The electrical service matters too, but ductwork is where the scope of the job gets settled.
What Gets Installed With a New Furnace
The furnace itself sits in a mechanical room, basement, or utility closet and is the unit a homeowner sees most often. Inside it, a heat exchanger and a blower work together: the exchanger warms the air, and the blower pushes that air into the supply side of the house. The flue pipe runs from the furnace to an exterior wall or roof and carries combustion gases out.
A thermostat mounts on an interior wall and is the control point for the whole system. Alongside the furnace, a contractor also sets the filter housing and connects the return-air plenum, the sheet-metal box that feeds air back to the unit. Both pieces sit close to the furnace cabinet itself.
The drawing shows a typical layout, and a licensed contractor determines exactly what applies to this house.
Get matched in Thomas CountyThomas County, Kansas, by the numbers
350 severe weather events were recorded in Thomas 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 Thomas County, Kansas were built in 1967 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesThomas County, Kansas holds 3,575 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 75.2% of the occupied homes in Thomas County, Kansas (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesFurnace Installation Rules for Thomas County, Kansas4 codes & standards
What Happens During Your Installation
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 Thomas County
Weather puts a measurable load on heating equipment, and that load varies by where you live. A furnace sized and installed for what Thomas County actually delivers will hold up differently than one spec'd for somewhere else.
350 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.