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While there is no state license requirement for mechanical contractors, they are required to file a $25,000 mechanical contractor bond with our agency 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 us and written by a surety company licensed to do business in Minnesota.

In addition to filing a bond, mechanical contractors are subject to local licensing requirements.

Mechanical bond forms

Code books

Minnesota's Bookstore sells mechanical codes, including:

  • Minnesota State Mechanical Code (Chapter 1346)

  • International Mechanical Code

  • International Fuel Gas Code

  • Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations (NFPA 96)

  • Minnesota State Mechanical, Fuel Gas and Plumbing Code

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

About the Minnesota Mechanical Code

This chapter of the state building code governs the installation and maintenance of heating, ventilating, cooling, and refrigeration systems or so-called "HVAC" 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 2012 International Mechanical & International Fuel Gas Codes and the amendments to these documents located in chapter 1346.


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