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Minnesota Department of Labor and Industry


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Heating, ventilating and air conditioning  - Minnesota Mechanical Code

This chapter of the state building code governs the installation and maintenance of heating, ventilating, cooling, and refrigeration systems. Examples of subjects regulated include, furnaces, ductwork, hot water heat, commercial kitchen ventilation, gas piping, exhaust ventilation, etc. The Minnesota Mechanical code consists of the 2000 International Mechanical & International Fuel Gas Codes and the amendments to these documents located in chapter 1346.

The Minnesota State Building Code is the standard for construction statewide, however, the code is enforced by certain cities and townships.

The amendments dealing with heating, ventilating and air conditioning - known as chapter 1346 of the State Building Code - are available from the Minnesota Office of the Revisor of Statutes.

  Heating, ventilating and air conditioning documents and forms
Bond requirements for installation of gas piping, heating, ventilation, cooling, air conditioning, fuel burning or refrigeration equipment
Mechanical Bond Packet
- Mechanical Contractors (Old List)
- Mechanical Contractors (New List)
Mechanical code opinion: combustion air requirements
Mechanical code opinion: oversized furnace vent
Mechanical code opinion: fire and smoke damper requirements
Mechanical code opinion: common vertical vent maximum size


Please Note: As of Oct. 1, 2009, the Department of Labor and Industry does not accept cash as payment for licenses, inspections, copy requests and other DLI services. Accepted methods of payment include checks, money orders and electronic payments that can be made through the DLI Web site.
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Minnesota Department of Labor and Industry
Phone:  (651) 284-5005 or 1-800-DIAL-DLI (1-800-342-5354); TTY:  (651) 297-4198
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