Tennessee CMC - Full Mechanical Contractor Exam Prep - Live Virtual + Self Study Training

Prepare for the Tennessee CMC Full Mechanical Contractor examination with a combination of Live Virtual + Self Study Training designed around the broad mechanical knowledge required for Tennessee's full CMC classification. This program focuses on mechanical code requirements, fuel gas systems, HVAC equipment, refrigeration, piping, controls, electrical concepts, load calculations, air distribution, ventilation, fire protection, sprinkler systems, and efficient reference navigation.

The Tennessee CMC classification is the state's full mechanical contracting classification. It covers a wide range of mechanical contracting work, including plumbing and gas piping systems, HVAC and refrigeration systems, process piping, fire sprinkler and fire protection systems, boiler systems, fuel gas systems, pollution-control systems, pneumatic tube systems, mechanical insulation, and temperature-control systems.

Because the CMC classification covers multiple mechanical disciplines, preparation should go beyond studying a single code book or trade area. Candidates should understand how mechanical equipment, fuel gas, piping, ventilation, refrigeration, controls, fire protection, and related systems operate while also developing the ability to locate technical requirements efficiently in approved references.

The current Tennessee CMC examination is administered by Prov for the Tennessee Board for Licensing Contractors. Tennessee transitioned new contractor exam scheduling to Prov beginning July 1, 2026. The CMC Full Mechanical Contractor examination requires Board pre-approval before a candidate may schedule the trade exam.

The current primary CMC exam references include the International Mechanical Code, 2021, International Fuel Gas Code, 2021, and HVAC Basics for Contractors, 4th Edition. Additional materials supplied with or used for this training include the International Building Code, 2021, Refrigeration and Air Conditioning Technology, 10th Edition, and NFPA 13 - Standard for the Installation of Sprinkler Systems, 2022 for broader technical study and review.

The Live Virtual + Self Study format gives candidates two ways to prepare. Live virtual instruction provides scheduled, instructor-led review of major mechanical subjects and reference-navigation strategies, while self-study allows candidates to revisit difficult topics, work through practice-oriented material, and spend additional time in areas where more review is needed.

Live Class Schedule

The live training schedule is organized around the books and technical references used on the exam. Click Here to View the Current Live Class Schedule.

Exam Details

The Tennessee CMC Full Mechanical Contractor trade examination is administered by Prov for the Tennessee Board for Licensing Contractors. Candidates pursuing the full CMC examination must obtain Board approval before scheduling the test.

• Exam: Tennessee CMC Full Mechanical Contractor
• Number of Questions: 100
• Time Allowed: 2 hours
• Testing Provider: Prov
• Pre-Approval: Required from the Tennessee Board for Licensing Contractors before scheduling the CMC examination

The current examination outline includes the following subject areas:

• General Knowledge: 6 questions
• Code Requirements: 5 questions
• Fuel Gas Systems: 8 questions
• Safety: 8 questions
• Controls: 4 questions
• Electrical Concepts: 4 questions
• Piping: 8 questions
• Load Calculations: 5 questions
• Equipment: 10 questions
• Refrigerants and Oils: 10 questions
• Air Distribution and Vents: 18 questions
• Fire Protection: 4 questions
• Sprinkler Systems: 10 questions

Air Distribution and Vents is the largest individual examination area with 18 questions. Candidates should give substantial attention to duct systems, ventilation, airflow, distribution principles, equipment connections, and mechanical-code requirements associated with moving and exhausting air.

Equipment, Refrigerants and Oils, and Sprinkler Systems each account for 10 questions. These areas represent a substantial portion of the exam and should be incorporated into every serious CMC study plan.

Fuel Gas Systems, Safety, and Piping each account for eight questions. Candidates should understand gas-piping requirements, installation principles, mechanical piping concepts, and safe work practices associated with mechanical contracting.

General Knowledge, Code Requirements, Controls, Electrical Concepts, Load Calculations, and Fire Protection round out the examination. Even smaller categories should not be ignored because the full CMC classification requires broad mechanical knowledge across multiple systems.

Open Book Test

The Tennessee contractor examinations administered by Prov are open-book tests. The current primary references listed for the CMC Full Mechanical Contractor examination include:

• International Mechanical Code, 2021
• International Fuel Gas Code, 2021
• HVAC Basics for Contractors, 4th Edition

Open-book testing rewards candidates who understand both the trade and the organization of their references. With 100 questions and two hours available, candidates have an average of approximately 1.2 minutes per question. That makes efficient reference navigation especially important.

Candidates should practice locating mechanical-code requirements, fuel-gas provisions, equipment information, ventilation requirements, piping rules, combustion-air provisions, and other technical information without spending excessive time searching.

The strongest open-book strategy combines knowledge and navigation. Questions that can be answered confidently from trade knowledge should be handled directly. A reference lookup should be used when a precise requirement, table, limitation, or code provision needs to be confirmed.

Tennessee's current exam transition also allows certain previously approved PSI reference materials during the transition period through January 1, 2027. Candidates should follow the current testing-provider rules for the specific books and editions they intend to take into the testing environment.

Licensing Steps

The Tennessee Board for Licensing Contractors regulates the CMC Full Mechanical Contractor classification. The trade exam is one part of the complete contractor licensing process.

1. Confirm the CMC classification. Determine that the full Mechanical Contractor classification matches the range of mechanical work the business intends to perform.
2. Designate the Qualifying Agent. The Qualifying Agent is the person designated to take the applicable examination for the entity seeking the contractor license.
3. Request CMC examination pre-approval. The Tennessee Board for Licensing Contractors requires approval before a candidate may schedule the Full Mechanical Contractor examination.
4. Complete the Board's pre-approval process. Submit the required Full Mechanical examination pre-approval request and applicable fee to the Board.
5. Receive authorization. After approval, the candidate can proceed with scheduling instructions for the CMC trade exam.
6. Schedule the CMC examination. New Tennessee contractor examination scheduling is handled through Prov.
7. Prepare for the Full Mechanical trade exam. Study mechanical code, fuel gas, HVAC, refrigeration, piping, controls, electrical concepts, loads, ventilation, fire protection, and sprinkler systems.
8. Complete the Tennessee Business and Law examination. New contractor applicants must satisfy the applicable Tennessee Business and Law examination requirement in addition to required trade testing.
9. Prepare the contractor license application. Organize the required business information, qualifying-agent information, financial documentation, reference information, insurance documentation, and other application materials.
10. Establish the requested monetary limit. Tennessee contractor licenses include a monetary limit that affects the size of projects the contractor may bid or perform.
11. Submit the licensing application. Complete the Tennessee Board for Licensing Contractors application process after satisfying applicable testing requirements.
12. Complete Board review requirements. The Board reviews the application, financial information, classification, experience, and other licensing documentation before approving licensure.

State Requirements

Tennessee requires a contractor license before bidding, offering to contract, or contracting as a prime contractor on projects meeting the state's contractor licensing threshold. Mechanical subcontractors are also subject to contractor licensing requirements when the mechanical portion of the project reaches the applicable threshold.

The CMC classification is Tennessee's full mechanical contracting classification. It encompasses the complete range of mechanical work authorized by the Board, including plumbing and gas piping, HVAC and refrigeration, process piping, fire sprinkler and fire protection, boilers, fuel gas systems, pollution control, pneumatic tube systems, mechanical insulation, and temperature controls.

Applicants for the full CMC examination must receive pre-approval from the Tennessee Board for Licensing Contractors before scheduling the examination. The Board currently requires a specific pre-approval request and fee for this process.

Tennessee contractor applicants are also required to satisfy the Business and Law examination requirement. The person taking the Business and Law examination does not have to be the same individual taking the trade examination, and the company may designate qualifying agents according to Board requirements.

Tennessee contractor licenses are also issued with a monetary limit. The requested monetary limit is tied to financial qualification and affects the maximum project size the contractor is authorized to contract.

The licensing process includes financial documentation, a letter of reference, proof of applicable insurance, contractor affidavits, and other Board requirements in addition to examination results. Passing the CMC trade examination by itself does not complete the contractor licensing process.

Reference Books

• International Fuel Gas Code, 2021
  This current CMC exam reference supports preparation involving fuel-gas piping, combustion air, appliances, venting, installation requirements, and other fuel-gas systems covered by the examination.
• International Mechanical Code, 2021
  This current CMC exam reference supports mechanical-code preparation involving HVAC equipment, ventilation, duct systems, exhaust, mechanical installations, piping, and other code-regulated mechanical work.
• HVAC Basics for Contractors, 4th Edition
  This current CMC exam reference supports practical HVAC preparation involving mechanical systems, equipment, installation principles, controls, calculations, air distribution, and related contractor knowledge.
• International Building Code, 2021
  This study reference supports broader understanding of building-code relationships affecting mechanical installations, equipment locations, penetrations, fire and smoke protection, and coordination with building systems.
• Refrigeration and Air Conditioning Technology, 10th Edition
  This study reference supports refrigeration principles, refrigerants and oils, equipment, controls, service concepts, air-conditioning systems, and mechanical troubleshooting knowledge relevant to CMC preparation.
• NFPA 13 - Standard for the Installation of Sprinkler Systems, 2022
  This study reference supports preparation involving sprinkler-system principles, installation requirements, system components, and fire-protection concepts relevant to the CMC examination.

Test Information and Study Materials

A strong CMC preparation plan should reflect the breadth of the examination. Candidates are preparing for the full mechanical classification rather than a narrow HVAC-only test, so study time should be spread across several disciplines while still prioritizing the heavily weighted subjects.

Prioritize air distribution and ventilation. This is the largest individual exam category. Review duct systems, ventilation, exhaust, airflow, air movement, mechanical-code requirements, and related installation principles.

Study HVAC and refrigeration equipment. Equipment and Refrigerants and Oils each represent 10 questions. Candidates should understand system components, operating principles, refrigerant concepts, oils, equipment applications, and common mechanical relationships.

Prepare sprinkler-system knowledge. Sprinkler Systems also accounts for 10 questions. Use NFPA 13 study material to reinforce system components, installation concepts, and fire-protection fundamentals.

Strengthen fuel-gas knowledge. Use the International Fuel Gas Code to practice requirements involving gas piping, appliance installations, combustion air, venting, and related systems.

Review mechanical piping. Candidates should be comfortable with piping concepts, materials, supports, installation relationships, and mechanical-system applications.

Practice calculations. Load Calculations represents a dedicated exam area. Review formulas, equipment relationships, airflow concepts, and mechanical calculations until the process is familiar.

Review electrical concepts and controls. Mechanical contractors regularly encounter motors, controls, electrical relationships, and equipment control systems. These topics have dedicated questions on the CMC examination.

Practice reference navigation under time limits. With 100 questions in two hours, lengthy searches can consume valuable exam time. Practice finding information in the International Mechanical Code and International Fuel Gas Code quickly.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep supports Tennessee CMC Full Mechanical Contractor candidates through organized study guidance, mechanical trade-focused review, practice-oriented preparation, reference navigation, live virtual instruction, and structured self-study.

The Live Virtual component gives candidates scheduled instruction focused on major CMC subjects and the books used for preparation. Candidates can work through mechanical code, fuel gas, HVAC, refrigeration, piping, calculations, ventilation, controls, fire protection, and sprinkler topics in an organized training environment.

The Self Study component supports continued preparation between live sessions. Candidates can revisit difficult topics, review technical concepts, practice reference navigation, and spend more time on the areas where additional preparation is needed.

Reference-navigation training helps candidates become more efficient with the International Mechanical Code and International Fuel Gas Code. Knowing where to search and how to recognize the subject of a question can be especially valuable on a 100-question examination with a two-hour time limit.

Practice-oriented study helps identify weak subjects. A candidate with extensive HVAC experience may need more review of sprinkler systems or fuel gas, while another may need additional work with refrigeration, load calculations, controls, or ventilation.

The broad reference set also supports preparation beyond basic code lookup. Refrigeration and Air Conditioning Technology reinforces refrigeration and HVAC concepts, NFPA 13 supports sprinkler-system review, and the International Building Code provides additional context for coordination between mechanical and building systems.

By combining live virtual training, self-study, mechanical code navigation, trade-focused review, practice-oriented preparation, and broad CMC subject coverage, 1 Exam Prep provides a structured way to prepare for Tennessee's Full Mechanical Contractor examination.

Frequently Asked Questions

Is the Tennessee CMC Full Mechanical Contractor exam open book?

Yes. Tennessee contractor examinations administered by Prov are open book, subject to the testing provider's rules for approved reference materials.

Who administers the Tennessee CMC exam?

Prov administers new Tennessee contractor examinations for the Tennessee Board for Licensing Contractors.

Does the Tennessee CMC exam require pre-approval?

Yes. The Full Mechanical Contractor CMC examination requires pre-approval from the Tennessee Board for Licensing Contractors before the candidate may schedule the exam.

How many questions are on the Tennessee CMC exam?

The current Tennessee CMC Full Mechanical Contractor examination contains 100 questions.

How much time is allowed for the CMC exam?

Candidates have two hours to complete the examination.

What is the largest subject area on the Tennessee CMC exam?

Air Distribution and Vents is the largest individual subject area, with 18 questions.

Does the CMC exam include refrigeration?

Yes. Refrigerants and Oils is a dedicated examination category, and equipment and refrigeration knowledge are important parts of Full Mechanical preparation.

Does the Tennessee CMC examination include sprinkler systems?

Yes. Sprinkler Systems is a dedicated examination category with 10 questions, and Fire Protection is also tested separately.

What current primary books should I know for the CMC examination?

The current primary references include the International Mechanical Code, 2021; International Fuel Gas Code, 2021; and HVAC Basics for Contractors, 4th Edition.

Does the CMC license cover more than HVAC?

Yes. The full CMC classification covers a broad range of mechanical contracting work, including HVAC, refrigeration, plumbing and gas piping, process piping, sprinklers and fire protection, boilers, fuel gas systems, mechanical insulation, and additional mechanical specialties.

Is Tennessee Business and Law also required?

Yes. New Tennessee contractor applicants must satisfy the applicable Business and Law examination requirement in addition to any required trade examination.

What is the advantage of Live Virtual + Self Study Training?

Live Virtual + Self Study Training combines scheduled instruction with flexible independent preparation, allowing candidates to review difficult mechanical subjects repeatedly while also receiving structured guidance through major CMC exam topics.

How should I prepare for a 100-question exam with a two-hour limit?

Build strong trade knowledge, practice code navigation under timed conditions, learn when a reference lookup is necessary, and devote additional review to heavily weighted categories such as air distribution, equipment, refrigeration, and sprinkler systems.

Where can I find the current live training schedule?

Visit the 1 Exam Prep Live Class Schedule to view current live virtual training dates.