Mechanical Permits
Homeowners
The Minnesota Mechanical Code requires a mechanical permit for the installation, modification, replacement, or similar work such as:
- Furnace
- Air conditioner
- Duct work
- Humidifier
- Air exchanger (ERV, HRV)
- Gas fireplace (except gas lines)
- Wood stove
- Chimney / Chimney liner
- Vent connector
- Bathroom/kitchen exhaust fan or to alter any aspect of the heating
- Ventilation
Note: Homeowners are not allowed to do any gas work unless they obtain a mechanical license.
Apply for a permit
Start the permit process by using our Electronic Permit Application.
Contractors
Residential projects
Contractors – Looking to replace the following in a residential home? Use our Instant Permit portal to start the process.
- Furnace
- Boiler
- Air conditioner
- Fireplace
- Mini split
- Mechanical systems in a new residential occupancy
Contractors, if you are performing additional mechanical work not listed above, start you application here.
Commercial projects
All commercial projects must be submitted through the Electronic Permit Application.
Mechanical licensing requirements
While there is no state license requirements for mechanical contractors, you are required to file a $25,000 mechanical contractor bond with MN DLI in order to contract to perform gas, heating, ventilation, cooling, air conditioning, fuel burning or refrigeration work in Minnesota. The bond must be on a form approved by MN DLI and written by a surety company licensed to do business in Minnesota.
Before performing any work within the city, a current mechanical license is required.