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NCCER HVAC Level 1 Module 4
Introduction to Heating Exam
Questions and Answers 100% Pass
A gas fired warm air furnace heats by _______ - ✔✔Conduction
If you burn your finger by touching a hot surface, it is an example of _______ - ✔✔Conduction
Humidifiers are used to _______ - ✔✔Add moisture to the air
A temperature of 80F is equal to _______ - ✔✔26.5C
Carbon monoxide is produced when ______ - ✔✔Combustion is incomplete
A gas burner flame should be _______ - ✔✔Blue with an orange tip
Of the following gases, the one with the highest heating value per cubic foot is _______ - ✔✔Butane
In a forced air furnace, air _______ - ✔✔Flows over the outside of the heat exchangers
In a condensing furnace, the secondary heat exchanger _______ - ✔✔Is used to reheat the flue gases
before they are vented
Created by Katelyn Whitman © 2025, All Rights Reserved.
NCCER HVAC Level 1 Module 4
Introduction to Heating Exam
Questions and Answers 100% Pass
A gas fired warm air furnace heats by _______ - ✔✔Conduction
If you burn your finger by touching a hot surface, it is an example of _______ - ✔✔Conduction
Humidifiers are used to _______ - ✔✔Add moisture to the air
A temperature of 80F is equal to _______ - ✔✔26.5C
Carbon monoxide is produced when ______ - ✔✔Combustion is incomplete
A gas burner flame should be _______ - ✔✔Blue with an orange tip
Of the following gases, the one with the highest heating value per cubic foot is _______ - ✔✔Butane
In a forced air furnace, air _______ - ✔✔Flows over the outside of the heat exchangers
In a condensing furnace, the secondary heat exchanger _______ - ✔✔Is used to reheat the flue gases
before they are vented
Created by Katelyn Whitman © 2025, All Rights Reserved.
