HVAC companies in Madison, WI
Compare up to three local Madison HVAC contractors from Henry's vetted bench — AC repair, furnace and heat pump service, and full system replacement.
Madison winters push furnaces and boilers hard for months at a time, while short, humid summers still make air conditioning a near-necessity on the near west side and beyond. Homeowners here juggle very different housing stock, from postwar ranches in Nakoma with basement forced-air systems to older Vilas and Tenney-Lapham bungalows still running steam or hot-water radiators with no ductwork at all. Before you hire, it helps to understand what a Madison HVAC job actually costs, who pulls the permit, and which credential a contractor needs under Wisconsin law. Start with our AC repair cost guide, HVAC replacement cost guide, contractor vetting guide, and local companies comparison, or get matched with a vetted Madison HVAC pro now.
The Henry Standard
Every HVAC contractor in our network agrees to three things.
Show up
Call back. Keep appointments. And if something changes, communicate it.
Quote honestly
Equipment, scope, permit, and price in writing — so you know what you're agreeing to.
Finish the work
See the job through, pull the permit, and pass inspection before calling it finished.
Nothing revolutionary. Just the way we believe doing business should still be done.
How Henry matches you with Madison HVAC contractors
- Step 1
Tell Henry what the system is doing
Your ZIP, whether it's a repair or a replacement, and how soon you need it handled. Two minutes, four questions.
- Step 2
Pros are already vetted
Only three Henry Standard HVAC contractors in your Madison-area ZIP get your request — pros we've checked for responsiveness, references and written estimates.
- Step 3
Compare up to three quotes
You hear from three HVAC contractors at most — never a list of twenty — and every estimate comes in writing. You pick, or pick nobody.
What HVAC work costs in Madison
| AC repair (diagnostic + minor fix) | $150 - $450 |
| AC repair (capacitor, motor, or refrigerant leak) | $400 - $1,200 |
| Furnace repair | $150 - $700 |
| Furnace replacement (gas, 95%+ AFUE) | $4,000 - $8,500 |
| Central AC replacement | $4,500 - $8,500 |
| Ductless mini-split (single zone, install) | $3,500 - $6,500 |
| Ductless mini-split (multi-zone, 3-4 heads) | $9,000 - $16,000 |
| Boiler replacement (gas hot-water) | $6,000 - $12,000 |
| Annual HVAC maintenance plan | $150 - $350 |
Ranges are general estimates gathered from homeowner-reported quotes in the Madison area, not an offer or a quote for your project.
When to schedule HVAC work in Madison
Madison's continental climate brings long, brutal winters where furnaces and boilers run daily from roughly November through March, so heating capacity and reliability matter more here than in most markets. Summers are short but humid enough that cooling load spikes hard in July and August, and homes without existing ductwork often add cooling only when a mini-split or high-velocity system goes in. Because Dane County sees subzero cold snaps most winters, contractors size equipment for extreme minimums, not just average temperatures.
Permits and HOA rules
Inside Madison city limits, HVAC work goes through the City of Madison Building Inspection Division, which requires an HVAC permit for furnace, boiler, AC, and ductless mini-split installs and replacements, with fees generally set per unit or by BTU output 1. Homes in surrounding Dane County towns and villages that don't have their own building department typically permit HVAC work through Dane County's Zoning and Land Regulation or the local municipal building inspector rather than the City of Madison office, so confirm which jurisdiction covers your address before work starts. Statewide, all one- and two-family HVAC installations must also meet Wisconsin's Uniform Dwelling Code (SPS 320-325) regardless of which local office issues the permit.
Licensing and insurance in Wisconsin
Wisconsin regulates HVAC work at the state level through the Department of Safety and Professional Services (DSPS), which requires businesses installing or servicing heating, ventilating, or air conditioning equipment to hold a registered HVAC Contractor credential under Wis. Admin. Code SPS 305.70 2. Individuals who perform or supervise that work generally need an HVAC Qualifier certification under SPS 305.71, which requires several years of documented field experience or equivalent education 3. Always ask a Madison contractor for their DSPS credential number and verify it through the state's LicensE portal before signing a contract.
Why Madison HVAC systems look different by neighborhood
A lot of Madison's near west side and isthmus housing predates central air entirely. Bungalows and Cape Cods in Vilas, Tenney-Lapham, and parts of Dudgeon-Monroe were often built with gravity or steam radiator heat and no duct chases, which is why ductless mini-splits have become the default cooling (and sometimes supplemental heating) option in those homes rather than a conventional central AC retrofit.
Newer postwar neighborhoods like Nakoma, Sunset Village, and Hill Farms are more likely to have forced-air furnaces already in place, making a straightforward AC add-on or coil replacement possible without the ductwork overhaul an older home would need.
Because so much of the city's mechanical work is either a full radiator-to-forced-air conversion or a mini-split retrofit, get quotes from contractors who list this kind of work explicitly in their experience, not just standard furnace swaps.
What drives HVAC costs in the Madison metro
Equipment sizing for Dane County's cold snaps pushes many furnace and boiler jobs toward higher-BTU units than you'd see in milder climates, which raises material cost.
Homes without existing ductwork add line-item costs for either ducted mini-split air handlers or fully ducted high-velocity systems, both of which run more than a simple swap of like-for-like equipment.
Local labor rates, City of Madison permit fees, and any Focus on Energy or MGE rebate paperwork your contractor handles on your behalf can all shift the final bid, so ask for an itemized quote rather than a flat number.
Permits and inspections for Madison homeowners
If your property is inside Madison city limits, expect your contractor to pull an HVAC permit from the City of Madison Building Inspection Division for any furnace, boiler, central AC, or ductless mini-split installation or replacement 1.
If you live in a Dane County town like Middleton, Fitchburg, or a rural township, the permitting authority may be the local municipal building department or Dane County's zoning office instead — ask your contractor which office they file with before work begins.
A licensed contractor pulling the permit under their own DSPS credential is a good sign; a contractor asking you to pull the permit yourself, or skipping it altogether, is a red flag worth asking about directly.
Rebates and incentives through Focus on Energy and MGE
Focus on Energy, Wisconsin's statewide efficiency program, offers instant discounts on qualifying high-efficiency furnaces, boilers, and heat pumps, often passed through your contractor at the time of purchase rather than as a mail-in rebate 4.
Madison Gas and Electric (MGE) customers can also access Focus on Energy's Home Efficiency Rebate (HOMES) and Home Electrification and Appliance Rebate (HEAR) programs, plus a smart thermostat incentive, through MGE's incentives page 5.
Rebate eligibility and dollar amounts change based on equipment efficiency tier and household income, so confirm current numbers with Focus on Energy or your contractor rather than relying on a fixed figure.
Choosing a contractor who knows Madison's housing stock
Ask any bidder how they handle homes with no existing ductwork — a contractor experienced in Madison's older near west side and isthmus housing should be comfortable quoting mini-split or high-velocity options, not just pushing a conventional central air retrofit.
Confirm they hold an active DSPS HVAC Contractor registration and that the technician on-site holds or works under an HVAC Qualifier certification.
Get at least two itemized bids that separate equipment, labor, permit fees, and any Focus on Energy rebate assistance so you can compare apples to apples.
Areas Henry covers
Near West Side · Vilas · Dudgeon-Monroe · Nakoma · Tenney-Lapham · Schenk-Atwood · Sherman Park · Bay Creek · Hill Farms · Sunset Village · Midvale Heights · Regent
Common questions
Do I need a permit to replace my furnace in Madison?
Yes. The City of Madison requires an HVAC permit for replacement heating equipment, air conditioning units, and ductless split systems, with fees generally set by equipment output or per unit 1.
What state license should a Madison HVAC contractor have?
Look for a Wisconsin DSPS-registered HVAC Contractor business credential, with technicians holding or working under an HVAC Qualifier certification per Wis. Admin. Code SPS 305.70-305.71.
My near-west-side home has radiators and no ductwork — can I still get central air?
Full central air usually requires adding ductwork, which is expensive in a home never built for it. Most contractors instead recommend a ductless mini-split system, which needs no ducts and can be installed zone by zone.
Are there rebates available for a new furnace or heat pump in Madison?
Focus on Energy offers instant discounts on qualifying high-efficiency furnaces, boilers, and heat pumps, and MGE customers can also access Focus on Energy's HOMES and HEAR rebate programs 4.
How cold does it get in Madison, and does that affect furnace sizing?
Dane County regularly sees subzero temperatures in winter, so contractors size heating equipment for extreme cold snaps rather than average conditions, which can mean a higher-capacity furnace than milder climates require.
Who do I call about HVAC permits if I live outside Madison city limits but in Dane County?
Homes in surrounding towns and villages typically permit through their own municipal building department or Dane County's zoning office rather than the City of Madison Building Inspection Division, so confirm with your contractor which office applies.
How much does AC repair typically cost in the Madison area?
Minor repairs like a diagnostic visit or capacitor replacement often run $150-$450, while more involved fixes such as a failed motor or refrigerant leak can run $400-$1,200 depending on parts and labor.
Madison guides from The Henry Files
Nearby Wisconsin markets
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