Texas HVAC Contractor Exam 2026 – 190 Practice Questions with
Answers & Detailed Rationales, TDLR Class A/B Licensing, Air
Conditioning, Refrigeration, HVAC Installation, System
Troubleshooting, Maintenance, Codes & Safety
Question 1
A contractor is applying for a Texas ACR license by experience only. According to TDLR rules,
how many months of practical experience within the preceding 72 months are required?
A. 24 months
B. 36 months
C. 48 months
D. 60 months
Correct Answer: C
Explanation: TDLR requires 48 months of practical experience under a licensed contractor
within the preceding 72 months for experience-only applicants.
Question 2
What is the maximum cooling capacity a Texas Class B ACR contractor is licensed to service?
A. 15 tons
B. 25 tons
C. 50 tons
D. Any size
,Correct Answer: B
Explanation: The Class B license allows work on cooling systems of 25 tons and under, while
Class A permits any size unit.
Question 3
A Texas Class B contractor is replacing a heating system. What is the maximum heating
capacity permitted under this license class?
A. 500,000 BTU/hr
B. 1 million BTU/hr
C. 1.5 million BTU/hr
D. 3 million BTU/hr
Correct Answer: C
Explanation: Class B permits work on heating systems rated at 1.5 million BTU/hour and
under per TDLR regulations.
Question 4
Which Texas agency administers the air conditioning and refrigeration contractor licensing
program?
A. Texas Department of Insurance
B. Texas Commission on Environmental Quality
C. Texas Department of Licensing and Regulation
,D. Texas Workforce Commission
Correct Answer: C
Explanation: TDLR is the state agency responsible for licensing and regulating ACR
contractors in Texas.
Question 5
A company signs an ACR contract but does not employ a licensed contractor at the time of
signing. What consequence applies?
A. The contract is valid but requires retroactive licensing
B. The company may not collect a fee or enforce the contract
C. The company receives a warning for first offense
D. The contract is automatically assigned to TDLR
Correct Answer: B
Explanation: Without a licensed ACR contractor employed at signing, the company cannot
collect fees or enforce the contract.
Question 6
What endorsement is required for a contractor performing comfort cooling and heating
work in residential structures?
A. Commercial Refrigeration
B. Process Cooling
, C. Environmental Air Conditioning
D. Industrial Heating
Correct Answer: C
Explanation: Environmental Air Conditioning endorsement covers comfort-conditioning
applications for human occupancy.
Question 7
How long is an ACR contractor license valid before renewal is required?
A. Six months
B. One year
C. Two years
D. Three years
Correct Answer: B
Explanation: ACR contractor licenses expire on the first anniversary of issuance and require
annual renewal.
Question 8
What continuing education hours are required for ACR contractor license renewal?
A. 4 hours
B. 6 hours
Answers & Detailed Rationales, TDLR Class A/B Licensing, Air
Conditioning, Refrigeration, HVAC Installation, System
Troubleshooting, Maintenance, Codes & Safety
Question 1
A contractor is applying for a Texas ACR license by experience only. According to TDLR rules,
how many months of practical experience within the preceding 72 months are required?
A. 24 months
B. 36 months
C. 48 months
D. 60 months
Correct Answer: C
Explanation: TDLR requires 48 months of practical experience under a licensed contractor
within the preceding 72 months for experience-only applicants.
Question 2
What is the maximum cooling capacity a Texas Class B ACR contractor is licensed to service?
A. 15 tons
B. 25 tons
C. 50 tons
D. Any size
,Correct Answer: B
Explanation: The Class B license allows work on cooling systems of 25 tons and under, while
Class A permits any size unit.
Question 3
A Texas Class B contractor is replacing a heating system. What is the maximum heating
capacity permitted under this license class?
A. 500,000 BTU/hr
B. 1 million BTU/hr
C. 1.5 million BTU/hr
D. 3 million BTU/hr
Correct Answer: C
Explanation: Class B permits work on heating systems rated at 1.5 million BTU/hour and
under per TDLR regulations.
Question 4
Which Texas agency administers the air conditioning and refrigeration contractor licensing
program?
A. Texas Department of Insurance
B. Texas Commission on Environmental Quality
C. Texas Department of Licensing and Regulation
,D. Texas Workforce Commission
Correct Answer: C
Explanation: TDLR is the state agency responsible for licensing and regulating ACR
contractors in Texas.
Question 5
A company signs an ACR contract but does not employ a licensed contractor at the time of
signing. What consequence applies?
A. The contract is valid but requires retroactive licensing
B. The company may not collect a fee or enforce the contract
C. The company receives a warning for first offense
D. The contract is automatically assigned to TDLR
Correct Answer: B
Explanation: Without a licensed ACR contractor employed at signing, the company cannot
collect fees or enforce the contract.
Question 6
What endorsement is required for a contractor performing comfort cooling and heating
work in residential structures?
A. Commercial Refrigeration
B. Process Cooling
, C. Environmental Air Conditioning
D. Industrial Heating
Correct Answer: C
Explanation: Environmental Air Conditioning endorsement covers comfort-conditioning
applications for human occupancy.
Question 7
How long is an ACR contractor license valid before renewal is required?
A. Six months
B. One year
C. Two years
D. Three years
Correct Answer: B
Explanation: ACR contractor licenses expire on the first anniversary of issuance and require
annual renewal.
Question 8
What continuing education hours are required for ACR contractor license renewal?
A. 4 hours
B. 6 hours
