When do I need a mechanical permit?

A mechanical permit is required to install, alter, repair, replace or remodel per International Mechanical Code and (WMC) 15.04.020(7).

A mechanical permit is not required for the following per UMC Section 112.2:

  • Portable heating, cooking, or clothes drying appliances
  • Portable ventilating equipment
  • Portable cooling unit
  • Steam, hot or chilled water piping within heating or cooling equipment regulated by this code
  • Replacement of any part which does not alter its approval or make it unsafe
  • Portable evaporative cooler
  • Self to contained refrigeration system containing 10 pounds or less of refrigerant and actuated by motors of one horsepower or less
  • Portable fuel cell appliances that are not connected to a fixed piping system and are not interconnected.

Show All Answers

1. Why do I need a building permit?
2. When do I need an emergency work permit?
3. When do I need a building permit?
4. When do I need a mechanical permit?
5. Why do I need a plumbing permit?
6. Don't permits cost thousands of dollars?
7. What if I made an alteration to my home without realizing I needed a permit and I want to correct the situation; will I be subject to a fine? Do I have to tear the whole project down and start over?
8. What is the purpose of the permits and codes?
9. If I get a permit to remodel my home that was built ten years ago, do I remodel using the building codes that were in affect at the time my home was originally built or to today's code?
10. If I remodel my house, do I have to bring the entire home up to the codes in effect today?
11. Why should I use a licensed contractor?
12. If a licensed contractor is doing the construction should I rely on my contractor to get the permit?
13. I’m doing work that is exempt from a building permit. Is there anything else I should be concerned about?