Refrigeration Science and Troubleshooting 2 Trade Hrs


Number of Hours: 2 out of 8 required

Course Offered Until: 12/22/2024


  • Up to half of the CEU’s can be completed online
  • Individuals cannot repeat the same course for credit in the same renewal cycle
  • Licensees must also print the course completion certificate upon completion and send it to the Iowa Board as well.
  • Licensees should hold onto their certificates of completion after completing a continuing education course. The PMSB office does not store or track CEUs for individual licensees; all licensee must maintain their own CEU records and submit those with their renewal applications.

This course has been approved by the Iowa Department of Public Health Plumbing and Mechanical Systems Board for 2 hours of HVAC/R Discipline continuing education.

Course Topics:

  • The science of refrigeration
  • Troubleshooting

All Star Training has online, continuing education courses for Air Conditioning and Refrigeration. Our online courses are cheaper than the competition, self-paced and easy to use. All our online courses are state-approved by Iowa and meet the requirements for license renewal or continuing education credits. So if you are working in Iowa and need ACR, HVAC, International Mechanical Code, Mechanical Contractors or other Air Conditioning and Refrigeration courses, there is no better choice than All Star Training!

Provider Type:
Approved Provider
CE Required:

Single license-Plumbing, HVAC/R, Hydronics, Sheet Metal, or Mechanical: 8 hours.
Multiple mechanical licenses: 14 hours.

Single license-Plumbing, HVAC/R, Hydronics, Sheet Metal, or Mechanical: 8 total hrs.

  • 2 hours safety (Iowa Occupational Health & Safety)
  • 2 hours code (applicable plumbing or mechanical code)
  • 4 hours discipline (must be in current license discipline only)

Multiple mechanical licenses: 14 total hours

  • 4 hours safety (Iowa Occupational Health & Safety)
  • 2 hours mechanical code
  • 8 hours discipline (from one or any combination of discipline licenses held)
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Please enter your full name and license number that appear on your license.

Renewal Month/Day:
Jun 30th
Renewal Type:
Renewal Date
Renewal Period:
Every 3 years All licenses issued or renewed after May 1, 2020, will expire on June 30, 2023. There is a one-month grace period for licensees to renew.
State Contact Info:


Phone: (866) 280-1521

Fax: (515) 281-6114


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