HVAC Cost in Deforest, WI in 2026
Most HVAC projects in Deforest, WI cost between $5,000 and $16,000. The typical price is $9,000.
Deforest prices track the national average closely. Costs here are close enough to the national picture that the adjustment barely moves the number.
What drives the price
- System size in tons and efficiency rating
- Heat pump versus furnace plus AC
- Ductwork condition and whether it is replaced
- Electrical or gas line changes
Usually included
- Equipment and refrigerant lines
- Installation, startup and commissioning
- New thermostat
- Haul-away of the old unit
Usually extra
- Duct replacement
- Electrical panel upgrades
- Permits and inspections
HVAC contractors in Deforest, WI
Businesses listed on Google near Deforest, WI. We are not affiliated with them and do not vet them — always confirm licensing and insurance before hiring.
Cardinal Heating, Cooling, Plumbing & Electric
4.9(5,266 reviews)
3361 Brooks Dr, Sun Prairie, WI 53590
All Comfort Services
4.8(3,668 reviews)
5245 Voges Rd, Madison, WI 53718
RG Heating Cooling Plumbing
4.9(1,941 reviews)
1091 Uniek Dr, Waunakee, WI 53597
Pharo Heating & Cooling, Inc.
4.9(916 reviews)
5341 W River Rd, Waunakee, WI 53597
Kettle Moraine Heating & Air Conditioning, LLC
5.0(106 reviews)
1412 Parkside Dr Ste 1210 Suite 1210, Madison, WI 53704
Rock Solid Heating & Air LLC
4.9(64 reviews)
303 S Main St, Poynette, WI 53955