HVAC LICENSING
LAW & RULES
Exam Practice Questions
2026 Edition
Verified Answers Plus Rationales
Q&A; | Instant Download PDF
EXAM SPECIFICATIONS
Time Allocation: 3 Hours
Total Questions: 100 Questions on Exam
Question Format: Multiple Choice with Rationales
Minimum Competency: 70% Required to Pass
Core Focus: Business Law, Contracts, Safety, EPA 608, IMC
HVAC Licensing Law & Rules Exam Prep 2026 Page 1
, Exam Overview & Content Outline
EXAM PURPOSE
This HVAC Licensing Law & Rules Exam Prep validates knowledge required for state HVAC
contractor licensing. Content covers business law, contract law, safety regulations, EPA Section 608
refrigerant regulations, International Mechanical Code (IMC), and trade practices.
CONTENT DISTRIBUTION
• Business & Contract Law (25%) — Contracts, liens, business structures, insurance, bonding,
employment law, bidding
• Safety & OSHA (20%) — OSHA standards, hazard communication, PPE, confined spaces,
lockout/tagout, fall protection
• EPA Section 608 & Refrigerants (20%) — Refrigerant handling, recovery, recycling, leak repair,
recordkeeping, certification types
• International Mechanical Code (20%) — IMC requirements for HVAC systems, ventilation,
ductwork, combustion air, venting
• Trade Knowledge & Ethics (15%) — Load calculations, equipment sizing, code compliance,
professional conduct, warranties
QUESTION FORMAT & SCORING
Each item presents four options. Correct answers are highlighted in green with checkmark (✓).
Every question includes detailed rationale with law/code references. Most states require 70% to pass.
STUDY STRATEGY
Master EPA 608 regulations and refrigerant types. Know contract essentials and lien law. Understand
OSHA requirements for HVAC work. Memorize key IMC sections. Use rationales to understand legal
application.
CURRICULUM ALIGNMENT
Questions reflect 2026 standards: EPA Section 608, OSHA 29 CFR 1926, 2021 International
Mechanical Code, state contractor licensing laws, and business law principles.
HVAC Licensing Law & Rules Exam Prep 2026 Page 2
, SECTION I: Business Law & Contracts
1. A valid contract requires:
A. Written documentation only
✓ B. Offer, acceptance, consideration, legal purpose, competent parties
C. Notarization
D. Attorney review
Rationale: Valid contract elements: offer, acceptance, consideration (exchange of value), legal purpose,
competent parties, mutual assent. Written not always required except Statute of Frauds. Notarization and
attorney not required for validity.
2. A mechanic's lien must generally be filed within:
A. 30 days of last work
✓ B. 60-120 days of last work depending on state
C. 1 year of last work
D. 10 days of last work
Rationale: Mechanic's lien deadlines vary by state, typically 60-120 days from last furnishing labor/materials.
Must also serve preliminary notice in many states. Protects contractors for unpaid work.
3. EPA Section 608 certification is required for technicians who:
A. Sell equipment only
✓ B. Service, maintain, or dispose of equipment containing refrigerants
C. Install ductwork only
D. Work on gas lines only
Rationale: EPA 608 requires certification for anyone who maintains, services, repairs, or disposes of
appliances containing regulated refrigerants. Four types: Type I (small appliances), II (high-pressure), III
(low-pressure), Universal.
4. Under EPA 608, intentional venting of CFC/HCFC refrigerants is:
A. Allowed for small amounts
✓ B. Prohibited with fines up to $57,000 per day
C. Allowed if recycled
D. Allowed during installation
Rationale: EPA prohibits knowingly venting CFCs, HCFCs, and HFCs. Fines up to $57,317 per day per
violation (2024). De minimis releases during service allowed. Must use certified recovery equipment.
5. OSHA requires fall protection at:
A. 4 feet in construction
✓ B. 6 feet in construction
C. 10 feet in construction
D. 15 feet in construction
HVAC Licensing Law & Rules Exam Prep 2026 Page 3
LAW & RULES
Exam Practice Questions
2026 Edition
Verified Answers Plus Rationales
Q&A; | Instant Download PDF
EXAM SPECIFICATIONS
Time Allocation: 3 Hours
Total Questions: 100 Questions on Exam
Question Format: Multiple Choice with Rationales
Minimum Competency: 70% Required to Pass
Core Focus: Business Law, Contracts, Safety, EPA 608, IMC
HVAC Licensing Law & Rules Exam Prep 2026 Page 1
, Exam Overview & Content Outline
EXAM PURPOSE
This HVAC Licensing Law & Rules Exam Prep validates knowledge required for state HVAC
contractor licensing. Content covers business law, contract law, safety regulations, EPA Section 608
refrigerant regulations, International Mechanical Code (IMC), and trade practices.
CONTENT DISTRIBUTION
• Business & Contract Law (25%) — Contracts, liens, business structures, insurance, bonding,
employment law, bidding
• Safety & OSHA (20%) — OSHA standards, hazard communication, PPE, confined spaces,
lockout/tagout, fall protection
• EPA Section 608 & Refrigerants (20%) — Refrigerant handling, recovery, recycling, leak repair,
recordkeeping, certification types
• International Mechanical Code (20%) — IMC requirements for HVAC systems, ventilation,
ductwork, combustion air, venting
• Trade Knowledge & Ethics (15%) — Load calculations, equipment sizing, code compliance,
professional conduct, warranties
QUESTION FORMAT & SCORING
Each item presents four options. Correct answers are highlighted in green with checkmark (✓).
Every question includes detailed rationale with law/code references. Most states require 70% to pass.
STUDY STRATEGY
Master EPA 608 regulations and refrigerant types. Know contract essentials and lien law. Understand
OSHA requirements for HVAC work. Memorize key IMC sections. Use rationales to understand legal
application.
CURRICULUM ALIGNMENT
Questions reflect 2026 standards: EPA Section 608, OSHA 29 CFR 1926, 2021 International
Mechanical Code, state contractor licensing laws, and business law principles.
HVAC Licensing Law & Rules Exam Prep 2026 Page 2
, SECTION I: Business Law & Contracts
1. A valid contract requires:
A. Written documentation only
✓ B. Offer, acceptance, consideration, legal purpose, competent parties
C. Notarization
D. Attorney review
Rationale: Valid contract elements: offer, acceptance, consideration (exchange of value), legal purpose,
competent parties, mutual assent. Written not always required except Statute of Frauds. Notarization and
attorney not required for validity.
2. A mechanic's lien must generally be filed within:
A. 30 days of last work
✓ B. 60-120 days of last work depending on state
C. 1 year of last work
D. 10 days of last work
Rationale: Mechanic's lien deadlines vary by state, typically 60-120 days from last furnishing labor/materials.
Must also serve preliminary notice in many states. Protects contractors for unpaid work.
3. EPA Section 608 certification is required for technicians who:
A. Sell equipment only
✓ B. Service, maintain, or dispose of equipment containing refrigerants
C. Install ductwork only
D. Work on gas lines only
Rationale: EPA 608 requires certification for anyone who maintains, services, repairs, or disposes of
appliances containing regulated refrigerants. Four types: Type I (small appliances), II (high-pressure), III
(low-pressure), Universal.
4. Under EPA 608, intentional venting of CFC/HCFC refrigerants is:
A. Allowed for small amounts
✓ B. Prohibited with fines up to $57,000 per day
C. Allowed if recycled
D. Allowed during installation
Rationale: EPA prohibits knowingly venting CFCs, HCFCs, and HFCs. Fines up to $57,317 per day per
violation (2024). De minimis releases during service allowed. Must use certified recovery equipment.
5. OSHA requires fall protection at:
A. 4 feet in construction
✓ B. 6 feet in construction
C. 10 feet in construction
D. 15 feet in construction
HVAC Licensing Law & Rules Exam Prep 2026 Page 3
