Red Seal Plumber 306A Practice Test
306A Water Heating Systems 2
What is the difference between a direct-vent and a power-vent water heater?
Select your answer
A
There is no difference
B
A direct-vent uses sealed combustion with intake and exhaust through the wall; a power-vent uses room air for combustion and a fan to exhaust through the wall
C
Direct-vent is electric; power-vent is gas
D
A power-vent uses natural draft; a direct-vent uses forced air
Hint
