1. Except as provided in section 105.11, a person shall not operate as a contractor or install or repair plumbing, mechanical, HVAC, refrigeration, sheet metal, or hydronic systems without obtaining a license issued by the board, or install or repair medical gas piping systems without obtaining a valid certification approved by the board.

Terms Used In Iowa Code 105.10

  • Board: means the plumbing and mechanical systems board as established pursuant to section 105. See Iowa Code 105.2
  • Contractor: means a person or entity that provides plumbing, mechanical, HVAC, refrigeration, sheet metal, or hydronic systems services on a contractual basis and who is paid a predetermined amount under that contract for rendering those services. See Iowa Code 105.2
  • Grace period: The number of days you'll have to pay your bill for purchases in full without triggering a finance charge. Source: Federal Reserve
  • HVAC: includes all natural, propane, liquid propane, or other gas lines associated with any component of an HVAC system. See Iowa Code 105.2
  • Hydronic: includes all low-pressure and high-pressure systems and all natural, propane, liquid propane, or other gas lines associated with any component of a hydronic system. See Iowa Code 105.2
  • Journeyperson: means any person, other than a master, who, as a principal occupation, is engaged as an employee of, or otherwise working under the direction of, a master in the design, installation, and repair of plumbing, mechanical, HVAC, refrigeration, sheet metal, or hydronic systems, as applicable. See Iowa Code 105.2
  • Master: means any person who works in the planning or superintending of the design, installation, or repair of plumbing, mechanical, HVAC, refrigeration, sheet metal, or hydronic systems and is otherwise lawfully qualified to conduct the business of plumbing, mechanical, HVAC, refrigeration, sheet metal, or hydronic systems, and who is familiar with the laws and rules governing the same. See Iowa Code 105.2
  • Medical gas piping: means a permanent fixed piping system in a health care facility which is used to convey oxygen, nitrous oxide, nitrogen, carbon dioxide, helium, medical air, and mixtures of these gases from its source to the point of use and includes the fixed piping associated with a medical, surgical, or gas scavenging vacuum system, as well as a bedside suction system. See Iowa Code 105.2
  • person: means individual, corporation, limited liability company, government or governmental subdivision or agency, business trust, estate, trust, partnership or association, or any other legal entity. See Iowa Code 4.1
  • Plumbing: includes potable water piping, potable water treating or using equipment, medical gas piping systems, fuel gas piping, water heaters and vents, including all natural, propane, liquid propane, or other gas lines associated with any component of a plumbing system. See Iowa Code 105.2
  • Refrigeration: includes all natural, propane, liquid propane, or other gas lines associated with any component of refrigeration. See Iowa Code 105.2
  • Sheet metal: means heating, ventilation, air conditioning, pollution control, fume hood systems and related ducted systems or installation of equipment associated with any component of a sheet metal system. See Iowa Code 105.2
 2. Except as provided in section 105.11, a person shall not engage in the business of designing, installing, or repairing plumbing, mechanical, HVAC, refrigeration, sheet metal, or hydronic systems unless at all times a licensed master, who shall be responsible for the proper designing, installing, and repairing of the plumbing, HVAC, refrigeration, sheet metal, or hydronic system, is employed by the person and is actively in charge of the plumbing, mechanical, HVAC, refrigeration, sheet metal, or hydronic work of the person. An individual who performs such work pursuant to a business operated as a sole proprietorship shall be a licensed master in the applicable discipline.
 3. An individual holding a master mechanical license shall not be required to get an HVAC-refrigeration, sheet metal, or hydronic license in order to design, install, or repair the work defined in this chapter as mechanical, HVAC-refrigeration, sheet metal, or hydronic work. An individual holding a journeyperson mechanical license shall not be required to get an HVAC-refrigeration, sheet metal, or hydronic license in order to install and repair the work defined in this chapter as mechanical, HVAC-refrigeration, sheet metal, or hydronic work. An individual holding a master or journeyperson mechanical license shall also not be required to obtain a special, restricted license that is designated as a sublicense of the mechanical, HVAC-refrigeration, sheet metal, or hydronic licenses.
 4. The board shall adopt rules to allow a grace period for a contractor to operate a business described in subsection 2 without employing a licensed master.
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