South Carolina Chimney Technician
Certification License Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. A chimney liner is primarily installed to:
A. Reduce soot accumulation on the roof
B. Protect combustible materials from high temperatures and
corrosive by-products
C. Increase the draft by forcing more air into the firebox
D. Serve as the primary structural support for the flue
A liner protects surrounding structures from heat and corrosive
gases, ensuring safe operation of the chimney.
2. What is the minimum clearance required between a Class A
factory-built chimney and combustible materials?
A. 0 inches
B. 1 inch
C. 2 inches
D. 4 inches
Factory-built chimney systems are engineered with specific tested
clearances, and the standard minimum for most Class A systems is 2
inches to combustibles.
,3. The purpose of a chimney cap is to prevent:
A. Draft reversal in windy conditions
B. Creosote formation
C. Entry of rain, animals, and debris into the flue
D. Over-ventilation of the fireplace
Chimney caps keep out water, animals, and debris, protecting the
flue and reducing maintenance issues.
4. Creosote forms in a wood-burning chimney primarily because of:
A. Excessive combustion air
B. High flue gas temperatures
C. Incomplete combustion and low flue temperatures
D. Over-drafting from the chimney height
Creosote is a by-product of incomplete combustion and condenses
when flue gases cool, which increases fire risk.
5. A properly functioning chimney should draft:
A. Outward when the appliance isn’t operating
B. Only during gusty wind conditions
C. Inward at all times
D. Upward when the appliance is in use
Draft ensures combustion by removing flue gases; proper operation
produces upward flow when the appliance is active.
6. The required minimum height of a chimney above the highest point
where it passes through a roof is:
A. 1 foot
B. 2 feet
C. 4 feet
D. 6 feet
Building codes typically require the chimney to extend at least 2 feet
above the roof penetration for proper draft and safety.
, 7. What is the function of a clean-out door in a masonry chimney?
A. Prevent rain intrusion
B. Provide access for removal of creosote and debris
C. Adjust draft manually
D. Support the flue tile
Clean-outs allow technicians to access and remove creosote and soot
from the base of the chimney.
8. A Class B chimney system is designed for use with:
A. Wood-burning stoves
B. Pellet stoves
C. Oil or gas appliances
D. Open fireplaces
Class B chimneys are double-wall metal systems rated for venting gas
and oil furnaces, not high-heat wood appliances.
9. The ideal flue size for a given appliance should be:
A. Smaller than the appliance’s outlet
B. Twice the appliance’s outlet
C. Matched to the appliance manufacturer’s specifications
D. At least three times larger to reduce draft
Proper sizing per manufacturer ensures adequate draft and prevents
smoke spillage or condensation issues.
10. What is the first step before inspecting a chimney system?
A. Sweep the flue
B. Verify that all appliances are shut down and cool
C. Remove the chimney cap
D. Check for water leaks
Safety dictates that inspections begin only after the system is turned
off and cool to avoid burns or gas exposure.
Certification License Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. A chimney liner is primarily installed to:
A. Reduce soot accumulation on the roof
B. Protect combustible materials from high temperatures and
corrosive by-products
C. Increase the draft by forcing more air into the firebox
D. Serve as the primary structural support for the flue
A liner protects surrounding structures from heat and corrosive
gases, ensuring safe operation of the chimney.
2. What is the minimum clearance required between a Class A
factory-built chimney and combustible materials?
A. 0 inches
B. 1 inch
C. 2 inches
D. 4 inches
Factory-built chimney systems are engineered with specific tested
clearances, and the standard minimum for most Class A systems is 2
inches to combustibles.
,3. The purpose of a chimney cap is to prevent:
A. Draft reversal in windy conditions
B. Creosote formation
C. Entry of rain, animals, and debris into the flue
D. Over-ventilation of the fireplace
Chimney caps keep out water, animals, and debris, protecting the
flue and reducing maintenance issues.
4. Creosote forms in a wood-burning chimney primarily because of:
A. Excessive combustion air
B. High flue gas temperatures
C. Incomplete combustion and low flue temperatures
D. Over-drafting from the chimney height
Creosote is a by-product of incomplete combustion and condenses
when flue gases cool, which increases fire risk.
5. A properly functioning chimney should draft:
A. Outward when the appliance isn’t operating
B. Only during gusty wind conditions
C. Inward at all times
D. Upward when the appliance is in use
Draft ensures combustion by removing flue gases; proper operation
produces upward flow when the appliance is active.
6. The required minimum height of a chimney above the highest point
where it passes through a roof is:
A. 1 foot
B. 2 feet
C. 4 feet
D. 6 feet
Building codes typically require the chimney to extend at least 2 feet
above the roof penetration for proper draft and safety.
, 7. What is the function of a clean-out door in a masonry chimney?
A. Prevent rain intrusion
B. Provide access for removal of creosote and debris
C. Adjust draft manually
D. Support the flue tile
Clean-outs allow technicians to access and remove creosote and soot
from the base of the chimney.
8. A Class B chimney system is designed for use with:
A. Wood-burning stoves
B. Pellet stoves
C. Oil or gas appliances
D. Open fireplaces
Class B chimneys are double-wall metal systems rated for venting gas
and oil furnaces, not high-heat wood appliances.
9. The ideal flue size for a given appliance should be:
A. Smaller than the appliance’s outlet
B. Twice the appliance’s outlet
C. Matched to the appliance manufacturer’s specifications
D. At least three times larger to reduce draft
Proper sizing per manufacturer ensures adequate draft and prevents
smoke spillage or condensation issues.
10. What is the first step before inspecting a chimney system?
A. Sweep the flue
B. Verify that all appliances are shut down and cool
C. Remove the chimney cap
D. Check for water leaks
Safety dictates that inspections begin only after the system is turned
off and cool to avoid burns or gas exposure.
