HVAC System Replacement Cost in Wisconsin

Full HVAC system replacement in Wisconsin costs $10,000 to $21,900 in 2026, though city-to-city prices vary quite a bit. Heating drives most HVAC spending in Wisconsin: its larger communities average 7,231 heating and 605 cooling degree days a year.

HVAC System Replacement Prices in Wisconsin Cities

City	Estimate	Heating / cooling degree days
Milwaukee	$8,700 to $18,900	6,792 / 727
Madison	$10,500 to $23,000	7,096 / 639
Green Bay	$9,400 to $20,400	7,779 / 425
Kenosha	$9,300 to $20,200	6,446 / 721
Racine	$8,800 to $19,200	7,039 / 523

From 2020 through 2025, NOAA recorded 1,127 winter storm and ice events, 173 heat events, 344 extreme cold events and 1,587 hail reports in Wisconsin. Those are the days when emergency HVAC calls pile up.

When Replacement Makes Sense

Both the heating and cooling equipment are 15 years old or more
Both units keep needing repairs
Some rooms are uncomfortable, and the energy bills are high
An old R-22 AC paired with an aging furnace

What Moves the Price

Furnace plus AC, or heat pump plus air handler
Efficiency ratings: SEER2, AFUE and HSPF2
Equipment sized to the house and climate
Duct repair or replacement
Thermostat and zoning upgrades
Permits and electrical work

Common Questions

How often should an HVAC system be replaced?

Most systems get replaced every 15 to 20 years. AC units and heat pumps usually wear out before gas furnaces do.

Can I replace only the AC and keep my furnace?

Yes, as long as the indoor coil and blower work with the new AC. A mismatched system loses efficiency and can void the warranty.

Other HVAC Prices in Wisconsin

Get Free HVAC System Replacement Quotes

Tell us where you are and up to three licensed local pros will get in touch. You don't have to hire any of them.