Tell us about the job
Takes about a minute. No obligation.
A furnace quoted for an average Midwestern winter is the wrong furnace for this address. 108 severe weather events were recorded in Dunn County, Wisconsin between 2015 and 2024. Severe weather at that rate puts a real cumulative load on heating equipment, and a system that was undersized at the start carries that load on components already working past what they were rated for. A contractor sizing a furnace here has to account for what the local climate actually demands, not what a catalog recommends for the region in broad strokes. Getting the sizing right at installation is how the equipment survives the winters it will face.
Existing ductwork is what a furnace installation in Dunn County turns on. Half the homes in Dunn County, Wisconsin were built in 1983 or earlier (2020-2024 ACS 5-year). Duct runs sized and routed for the equipment of that era carry a different static pressure load than a modern furnace pushes, and a contractor has to assess whether those runs will deliver air the way the new unit expects before the equipment itself gets priced. The electrical service gets the same look, since draws have changed. What the house already contains sets the scope; the furnace comes after.
What Gets Installed With a New Furnace
The furnace itself sits in a mechanical room, basement, or utility closet and burns fuel to produce heat. A heat exchanger inside the cabinet transfers that heat to the air moving through the system. The flue pipe runs from the cabinet to an exterior wall or roof, carrying combustion gases out of the house.
The blower motor and fan assembly live inside the furnace cabinet and push conditioned air into the supply ducts. A thermostat mounts on an interior wall and serves as the control point for the whole system, telling the furnace when to fire and when to shut down.
The drawing shows a representative layout, and a licensed contractor determines exactly what applies to your house.
Get matched in Dunn CountyDunn County, by the numbers
108 severe weather events were recorded in Dunn County, Wisconsin 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 Dunn County, Wisconsin were built in 1983 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesDunn County, Wisconsin holds 18,983 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 67.0% of the occupied homes in Dunn County, Wisconsin (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesFurnace Installation Rules for Dunn County, Wisconsin6 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.
What Dunn County and Wisconsin Require for HVAC Work
A Wisconsin business that employs a certified HVAC qualifier is a certified HVAC business, and no city or county may require it to hold a local certification or licence on top of that.
Wisconsin requires a state HVAC contractor registration: no person or business may install or service heating, ventilating or air conditioning equipment, or offer to, without one.
Severe Weather Events in Dunn County
Dunn County weather puts real demands on heating equipment. How hard a furnace works over its life is a local fact, and the pattern of weather events here shapes what proper installation looks like.
108 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.