Saint Louis County Missouri
(589) Residential HVAC
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, 2013, Althous, Turnquist, Bowditch, Bracciano
4.
HVAC Duct Construction Standards - Metal and Flexible, 3rd Edition, 2005, SMACNA
5.
Practical Problems in Mathematics for Heating and Cooling Technicians, 6th Edition, Russell DeVore
6.
Modern Hydronic Heating: For Residential and Light Commercial Buildings, 3rd Edition
7.
St. Louis County Public Works and Building Regulations, 2023
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