Saint Louis County Missouri
(588) Commercial HVAC Service-Installer
Apply for the License
St. Louis County Dept. of Public Works
Mechanical Licensing
41 South Central Ave.
Clayton, MO 63105
Phone: (314) 615-7096
Exam Provider
International Code Council (ICC)
900 Montclair Rd.
Birmingham, AL 35213
(877) 234-6082
(Testing facilities & scheduling provided by Pearson VUE)
Exam Type
OPEN BOOK
Exam Content
| Topics | # of
Questions |
|---|
| Local Licensing Law | 5 |
| Local Mechanical Amendments | 10 |
| Applied Math | 6 |
| Air Distribution | 15 |
| Gas Furnaces and Piping | 15 |
| Piping in HVAC Systems | 12 |
| Refrigeration Equipment | 12 |
| Air Conditioning | 15 |
| Boilers | 10 |
Total number of test questions:
100
Time allowed (hours):
5.0
Books Allowed in the Exam
1.
International Mechanical Code, 2015, ICC
(Amazon cover art is wrong)
2.
International Fuel Gas Code, 2015, ICC
3.
Modern Refrigeration and Air Conditioning, 19th Edition, Althous, Turnquist, Bowditch, Bracciano
4.
Practical Problems in Mathematics for Heating and Cooling Technicians, 6th Edition, Russell DeVore
5.
Modern Hydronic Heating: For Residential and Light Commercial Buildings, 3rd Edition
6.
St. Louis County Public Works and Building Regulations, 2023
7.
Code of Federal Regulations, 29 CFR Part 1926 (OSHA) & 1903, 1904, 1910, MANCOMM
8.
HVAC Duct Construction Standards - Metal and Flexible, 3rd Edition, 2005, SMACNA
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