Tennessee Mechanical Contractor License (TN CMC)

Requirements to Obtaining your License.

A Mechanical Contractors License in Tennessee covers classifications that include plumbing, HVAC, refrigeration, process piping, boilers, gas piping, fire sprinklers, as well as others. This license is required in Tennessee when the project exceeds $25,000.

• Anyone seeking to become a contractor in Tennessee is required to sit for two exams, business and law and the trade.
• To sit for the exam, you must be pre-approved by documenting 3 years of experience.
• Workers Compensation is required

• If your monetary limit is up to $500,000, you will need to provide $100,000 coverage.
• If your monetary limit is $500,001 - $1,500,000, you will need to provide $500,000 coverage.
• If your monetary limit is greater than $1,500,000 you will need to provide $1,000,000 coverage.

Work that can be Done Under this License

Applying to get your License

Reciprocity Agreements

Continuing Education

Exam Details

• The testing company is PSI (1-800-733-9267)
• 120 questions and an 5-hour time limit
• 73% is required to pass the exam
• The exam fee is $55.
• Topics on the exam include electrical knowledge, motors, and controls; refrigeration, hydronic, steam and process piping; heating and cooling principles and theory; heating and cooling equipment and components; refrigerants and refrigeration; fuel and LP gas; combustion air, chimney’s, flues, and vents; ducts, ventilation, and exhaust; plumbing; load calculations; safety, fire and smoke protection; and fire sprinklers.

Books and References for the Exam

The following references are permitted to be taken into the examination. These references may be tabbed (with a permanent index tab) and highlighted. They are available for purchase from our online contractor’s bookstore or by calling our office at 1-800-952-0910.

• 2003 International Mechanical Code
• 2003 International Fuel Gas Code
• 2003 International Plumbing Code
• Modern Refrigeration and Air Conditioning
• Ductulator (Trane or ACCA)
• HVAC Duct Construction Standards, Metal and Flexible
• Ugly’s Electrical References
• Carrier System Design Manual Part 3
• OSHA Code of Federal Regulations Part 1926
• Pipefitters Handbook
• Manual N
• Manual J
• NFPA 13 – Installation of Sprinkler Systems

Exam Review, Training, Education

We offer review for the Tennessee Full Mechanical Contractor Exam through 1 day seminar or in a home study/tutorial format. The fee for the class or study guide is $445. At class, students will receive a study guide includes sample questions, practice math problems, sample load calculations, and a highlighting guide for the approved references. For more information on either attending a seminar, or to order, contact our office at 1-800-952-0910. Our online training is now included with every seminar.