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The license information below is specific to the state of Minnesota.
Heating, Air Conditioning, and Refrigeration Mechanics and Installers
Plumbers, Pipefitters, and Steamfitters
Requirement 875 Hours Minimum Requirements 6 months practical experience 875 Hours which includes 100 Hours Installation and 200 Hours Servicing the remaining required hours of practical experience may be in any aspect of water conditioning work
Minnesota Department of Labor and Industry
443 Lafayette Road North
St. Paul,
MN
55155
Phone: (651) 284-5005
Email: dli.communications@state.mn.us
Data is collected by the Department of Employment and Economic Development.