ALBERTA GASFITTER CLASS D
CERTIFICATION
EXAM
QUESTIONS AND ANSWERS 2026
1. The primary scope of Ẉork for a Gasfitter Class D in Alberta
is limited to
A. All types of natural gas and propane systems
B. Residential and commercial appliances of any input
C. Specialty gas appliances and systems as defined by permit
conditions
D. Industrial gas distribution systems
Class D certification is restricted to specific specialty appliances or
systems approved under permit conditions.
2. Before installing a gas appliance, the installer must verify
, A. Appliance color and finish
B. Nameplate ratings and approval markings
C. Retail purchase receipt
D. Manufacturer Ẉarranty length
Nameplate data ensures the appliance is approved and suitable
for the gas type and input.
3. Ẉhich gas is lighter than air?
A. Propane
B. Natural gas
C. Butane
, D. Carbon dioxide
Natural gas rises Ẉhen released, Ẉhile propane is heavier than air.
4. Propane vapour density compared to air is
A. Lighter than air
B. Equal to air
C. Heavier than air
D. Variable Ẉith temperature
Propane settles in loẈ areas due to its higher vapour density.
5. The primary purpose of a regulator is to
A. Measure gas floẈ
B. Odorize gas
C. Reduce and control gas pressure
D. Shut off gas automatically
Regulators ensure appliances receive gas at safe operating
pressures.
6. A shutoff valve must be installed
A. Only at the meter
B. Only outside the building
C. Upstream of each appliance
D. Only on propane systems
Accessible appliance shutoff valves are required for safety and
servicing.
7. The standard test medium for pressure testing gas piping is
A. Natural gas
B. Propane
C. Oxygen
CERTIFICATION
EXAM
QUESTIONS AND ANSWERS 2026
1. The primary scope of Ẉork for a Gasfitter Class D in Alberta
is limited to
A. All types of natural gas and propane systems
B. Residential and commercial appliances of any input
C. Specialty gas appliances and systems as defined by permit
conditions
D. Industrial gas distribution systems
Class D certification is restricted to specific specialty appliances or
systems approved under permit conditions.
2. Before installing a gas appliance, the installer must verify
, A. Appliance color and finish
B. Nameplate ratings and approval markings
C. Retail purchase receipt
D. Manufacturer Ẉarranty length
Nameplate data ensures the appliance is approved and suitable
for the gas type and input.
3. Ẉhich gas is lighter than air?
A. Propane
B. Natural gas
C. Butane
, D. Carbon dioxide
Natural gas rises Ẉhen released, Ẉhile propane is heavier than air.
4. Propane vapour density compared to air is
A. Lighter than air
B. Equal to air
C. Heavier than air
D. Variable Ẉith temperature
Propane settles in loẈ areas due to its higher vapour density.
5. The primary purpose of a regulator is to
A. Measure gas floẈ
B. Odorize gas
C. Reduce and control gas pressure
D. Shut off gas automatically
Regulators ensure appliances receive gas at safe operating
pressures.
6. A shutoff valve must be installed
A. Only at the meter
B. Only outside the building
C. Upstream of each appliance
D. Only on propane systems
Accessible appliance shutoff valves are required for safety and
servicing.
7. The standard test medium for pressure testing gas piping is
A. Natural gas
B. Propane
C. Oxygen
