HVAC EXAMINATION SET 2026 SOLVED
QUESTIONS GRADED A+
● Conduction. Answer: If you burn your finger by touching a hot
surface, it is an example of _______
● Add moisture to the air. Answer: Humidifiers are used to _______
● 26.5C. Answer: A temperature of 80F is equal to _______
● Combustion is incomplete. Answer: Carbon monoxide is produced
when ______
● Blue with an orange tip. Answer: A gas burner flame should be
_______
● Butane. Answer: Of the following gases, the one with the highest
heating value per cubic foot is _______
● Flows over the outside of the heat exchangers. Answer: In a forced air
furnace, air _______
, ● Is used to reheat the flue gases before they are vented. Answer: In a
condensing furnace, the secondary heat exchanger _______
● False. Answer: The furnace blower should be operating while the air
filter is being replaced.
● Only for the high efficiency condensing furnaces. Answer: Direct
venting of flue gases with PVC pipe may be used ______
● The gas pressure in the manifold. Answer: A manometer may be used
to measure ______
● Cast iron. Answer: Sectional boiler heat exchangers are usually
constructed of _______
● Open if the temperature exceeds 160F. Answer: The safety limit
switch in an electric furnace is usually set to _______
● Burner assembly and heat exchangers. Answer: In an electric furnace,
the heating element replaces which of the following items found in a gas
furnace?
● Sectional boilers. Answer: A hydronic heating system may use finned
tubes along the floor as ______
QUESTIONS GRADED A+
● Conduction. Answer: If you burn your finger by touching a hot
surface, it is an example of _______
● Add moisture to the air. Answer: Humidifiers are used to _______
● 26.5C. Answer: A temperature of 80F is equal to _______
● Combustion is incomplete. Answer: Carbon monoxide is produced
when ______
● Blue with an orange tip. Answer: A gas burner flame should be
_______
● Butane. Answer: Of the following gases, the one with the highest
heating value per cubic foot is _______
● Flows over the outside of the heat exchangers. Answer: In a forced air
furnace, air _______
, ● Is used to reheat the flue gases before they are vented. Answer: In a
condensing furnace, the secondary heat exchanger _______
● False. Answer: The furnace blower should be operating while the air
filter is being replaced.
● Only for the high efficiency condensing furnaces. Answer: Direct
venting of flue gases with PVC pipe may be used ______
● The gas pressure in the manifold. Answer: A manometer may be used
to measure ______
● Cast iron. Answer: Sectional boiler heat exchangers are usually
constructed of _______
● Open if the temperature exceeds 160F. Answer: The safety limit
switch in an electric furnace is usually set to _______
● Burner assembly and heat exchangers. Answer: In an electric furnace,
the heating element replaces which of the following items found in a gas
furnace?
● Sectional boilers. Answer: A hydronic heating system may use finned
tubes along the floor as ______
