HVAC contractors in
Janesville, Wisconsin.
A public directory of hvac contractor businesses serving greater Janesville. Market data, licensing requirements, and cost benchmarks — updated continuously from public sources.
HVAC jobs in Janesville
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Common Job Costs
Licensing Requirements
Licensing Requirements
Wisconsin requires HVAC contractors to hold a Dwelling Contractor Qualifier license for residential work under $25,000, or Master Dwelling Contractor license for larger projects. Commercial work requires appropriate trade licenses through DSPS. No state exam required, but must provide proof of 4 years experience or technical education. Renewal every 2 years with continuing education requirements.
Permit Requirements
City of Janesville requires permits for HVAC installations, replacements, and major repairs. Permit fees range $50-200 depending on project scope. Mechanical permits required for all ductwork modifications and equipment installations.
Inspection Schedule
Initial rough-in inspection before covering ductwork, final inspection after installation completion. City of Janesville typically schedules within 24-48 hours of request during business days.
Insurance Minimums
Wisconsin requires general liability insurance minimum $50,000 property damage, $100,000 bodily injury per person, $300,000 per occurrence. Workers compensation required for employees.
Local market snapshot
Source: DoorBase, aggregated public ZIP-level data. Updated 8/17/2026.
How to Get Licensed
Determine License Type
Identify whether you need Dwelling Contractor Qualifier (residential under $25,000), Master Dwelling Contractor (residential over $25,000), or commercial trade licenses through Wisconsin DSPS.
Meet Experience Requirements
Provide documentation of 4 years relevant experience in HVAC work OR completion of approved technical education program. Experience must be verified by employers or clients.
Submit Application
Complete Wisconsin DSPS application with required documentation, experience verification, and application fee. Include proof of insurance meeting state minimums.
Background Check
Submit to required background check and provide any requested additional documentation. DSPS will review criminal history and prior licensing issues.
Receive License
Once approved, receive license certificate and number. License is valid for 2 years and requires continuing education for renewal.
About This Market
Janesville's HVAC market serves a mix of older residential stock and light industrial facilities, with steady demand driven by equipment replacement cycles and energy efficiency upgrades. The market sees moderate competition among approximately 15-20 established contractors, with work concentrated in furnace replacements, AC installations, and commercial maintenance contracts. Costs run slightly below Madison rates but above rural Wisconsin averages, driven by proximity to larger markets and skilled labor availability. Winter heating failures and summer cooling demands create predictable seasonal spikes that keep established contractors busy year-round.
Working Janesville means navigating straightforward city permitting but staying sharp on Wisconsin's licensing requirements that catch out-of-state contractors off guard. The dwelling contractor license covers most residential work, but commercial projects need proper trade credentials through DSPS. Peak seasons hit hard - May through August for cooling, October through February for heating - so staff accordingly. Local inspectors know their stuff and expect code-compliant work, especially on ductwork and gas connections. Build relationships with supply houses early; nearest major suppliers are in Madison, so factor delivery costs and timing into bids.
- Median hourly wageU.S. Bureau of Labor Statistics
- Number of licensed establishmentsU.S. Census Bureau County Business Patterns
- Licensing requirementsWisconsin Department of Safety and Professional Services
- Permit requirementsCity of Janesville Building Department
- Insurance minimumsWisconsin Department of Safety and Professional Services
Frequently Asked Questions
What license do I need to do HVAC work in Janesville, WI?
You need a Wisconsin Dwelling Contractor Qualifier license for residential HVAC work under $25,000, or Master Dwelling Contractor license for larger projects. Commercial work requires appropriate trade licenses through Wisconsin DSPS.
How much does an HVAC permit cost in Janesville?
City of Janesville HVAC permits range from $50-200 depending on project scope. Simple equipment replacements cost less, while new installations with ductwork modifications cost more. Contact Janesville Building Department at 608-755-3030 for specific permit fees.
What's the average cost to replace a furnace in Janesville, WI?
Furnace replacement in Janesville typically runs $2,800-6,500 depending on unit efficiency, size, and installation complexity. High-efficiency units and homes requiring ductwork modifications cost more.
How long does HVAC permitting take in Janesville?
Janesville typically processes HVAC permits within 1-2 business days for standard residential work. Inspections are usually scheduled within 24-48 hours of request during business days.
What insurance do HVAC contractors need in Wisconsin?
Wisconsin requires minimum general liability coverage of $50,000 property damage, $100,000 bodily injury per person, and $300,000 per occurrence. Workers compensation insurance is mandatory if you have employees.
HVAC contractors in Janesville
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