Water Heater Permit
Required for water heater installation or replacement in Wisconsin. Even replacing an existing unit in the same location typically requires a permit. Wisconsin requires a licensed plumber for water heater installation under SPS 381–387, with proper venting, gas connections, temperature/pressure relief valve discharge, and seismic strapping where applicable.
When Is a Water Heater Permit Required?
- New water heater installation
- Replacing an existing water heater (even same location)
- Converting from tank to tankless water heater
- Converting between gas and electric water heaters
When Is a Water Heater Permit NOT Required?
- Point-of-use electric water heaters under some municipalities
- Routine maintenance and flushing
Related Permits You May Also Need
Required Licenses
The following professional licenses may be required to obtain or work under this permit type in Wisconsin.
Water Heater Permit Fees by Municipality
Fee and processing time data for water heater permit permits across Wisconsin municipalities. Click any jurisdiction for complete details including application links and requirements.
| Jurisdiction | Fee | Processing Time | Status |
|---|---|---|---|
| City of Milwaukee | $50 | 3-5 days | Current |
| City of Madison | $45 | 3-5 days | Current |
| City of Green Bay | $40 | 3-5 days | Current |
Data note: Fees are sourced from official municipal fee schedules and verified periodically. Actual fees may vary based on project valuation and scope. Click any jurisdiction for the most current data and direct application links.
Frequently Asked Questions — Water Heater Permit
Do I need a permit to replace my water heater in Wisconsin?
Yes. Most Wisconsin municipalities require a permit for water heater replacement, even when replacing with the same type and in the same location. The permit ensures proper venting, gas connections, and T&P valve discharge are inspected for safety.
Can I install my own water heater in Wisconsin?
Wisconsin requires a licensed plumber for water heater installation in most cases. The homeowner exemption for plumbing is very limited in Wisconsin compared to other states. Gas water heaters also require proper gas fitting work, which has additional licensing requirements.
Managing permits across multiple jurisdictions?
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