NATE EXAM CORE ESSENTIALS
121 Questions and Answers 2025 Top
Rated A+
d (very important) - √Answer :The ability to utilize all
types of communication skills is ____ to the HVACR
technician.
a. not as important as "hands-on" technical skills
b. somewhat important
c. unimportant
d. very important
Quiz :d (all of the above: clear, complete, concise) -
√Answer :It is important to be ____ in filling out service
orders so that office staff, other technicians, and
customers will know what work you completed on the
job.
a. clear
b. complete
c. concise
d. all of the above
Quiz :d (Refrigerant) - √Answer :When explaining to a
customer that you have adjusted the system charge,
which of the following terms is most appropriate?
,a. Freon
b. Gas
c. Juice
d. Refrigerant
Quiz :a (can help you diagnose the problem) - √Answer
:Listening carefully to what a customer is telling you
____.
a. can help you diagnose the problem
b. is a waste of time
c. is not necessary
d. often will only confuse you
Quiz :b (listen to the customer first, then ask questions) -
√Answer :When you arrive at a service call and meet the
customer, you should ____.
a. ask questions first, then listen to what the customer
has to say
b. listen to the customer first, then ask questions
c. avoid discussion with the customer
d. remind the customer that you are the professional and
get on with your work
Quiz :b (1,600 ft3) - √Answer :What is the volume of a
room that measures 10 ft by 20 ft with an 8-ft ceiling?
a. 800 ft3
,b. 1,600 ft3
c. 2,400 ft3
d. 3,200 ft3
Quiz :b (1,200 CFM) - √Answer :What is the CFM
requirements for an 1,800-ft2 house with 8-ft ceilings, if
five air changes per hour are needed?
a. 400 CFM
b. 1,200 CFM
c. 1,600 CFM
d. 2,400 CFM
Quiz :c (1,600 CFM) - √Answer :What is the CFM
requirement for an 2,400-ft2 house with 8-ft ceilings, if
five air changes per hour are needed?
a. 400 CFM
b. 1,200 CFM
c. 1,600 CFM
d. 2,400 CFM
Quiz :a (79 in2) - √Answer :What is the cross-sectional
area of a 10-in round metal duct?
a. 79 in2
b. 200 in2
c. 314 in2
d. 418 in2
, Note: Area of a circle = π x radius^2
Quiz :d (1,800 ft/min) - √Answer :How fast does air with
a velocity pressure of 0.20 in. w.g. move through a
round duct?
a. 400 ft/min
b. 1,200 ft/min
c. 1,600 ft/min
d. 1,800 ft/min
Note: Velocity = 4005 x (the square root of velocity
pressure)
Quiz :d (1,800 ft/min) - √Answer :How fast does air with
a velocity pressure of 0.20 in w.g. move through a
square duct?
a. 400 ft/min
b. 1,200 ft/min
c. 1,600 ft/min
d. 1,800 ft/min
Note: Velocity = 4005 x (the square root of velocity
pressure)
Quiz :d (all of the above: honest, loyal, patient) -
√Answer :Customers depend on you to be ____.
a. honest
121 Questions and Answers 2025 Top
Rated A+
d (very important) - √Answer :The ability to utilize all
types of communication skills is ____ to the HVACR
technician.
a. not as important as "hands-on" technical skills
b. somewhat important
c. unimportant
d. very important
Quiz :d (all of the above: clear, complete, concise) -
√Answer :It is important to be ____ in filling out service
orders so that office staff, other technicians, and
customers will know what work you completed on the
job.
a. clear
b. complete
c. concise
d. all of the above
Quiz :d (Refrigerant) - √Answer :When explaining to a
customer that you have adjusted the system charge,
which of the following terms is most appropriate?
,a. Freon
b. Gas
c. Juice
d. Refrigerant
Quiz :a (can help you diagnose the problem) - √Answer
:Listening carefully to what a customer is telling you
____.
a. can help you diagnose the problem
b. is a waste of time
c. is not necessary
d. often will only confuse you
Quiz :b (listen to the customer first, then ask questions) -
√Answer :When you arrive at a service call and meet the
customer, you should ____.
a. ask questions first, then listen to what the customer
has to say
b. listen to the customer first, then ask questions
c. avoid discussion with the customer
d. remind the customer that you are the professional and
get on with your work
Quiz :b (1,600 ft3) - √Answer :What is the volume of a
room that measures 10 ft by 20 ft with an 8-ft ceiling?
a. 800 ft3
,b. 1,600 ft3
c. 2,400 ft3
d. 3,200 ft3
Quiz :b (1,200 CFM) - √Answer :What is the CFM
requirements for an 1,800-ft2 house with 8-ft ceilings, if
five air changes per hour are needed?
a. 400 CFM
b. 1,200 CFM
c. 1,600 CFM
d. 2,400 CFM
Quiz :c (1,600 CFM) - √Answer :What is the CFM
requirement for an 2,400-ft2 house with 8-ft ceilings, if
five air changes per hour are needed?
a. 400 CFM
b. 1,200 CFM
c. 1,600 CFM
d. 2,400 CFM
Quiz :a (79 in2) - √Answer :What is the cross-sectional
area of a 10-in round metal duct?
a. 79 in2
b. 200 in2
c. 314 in2
d. 418 in2
, Note: Area of a circle = π x radius^2
Quiz :d (1,800 ft/min) - √Answer :How fast does air with
a velocity pressure of 0.20 in. w.g. move through a
round duct?
a. 400 ft/min
b. 1,200 ft/min
c. 1,600 ft/min
d. 1,800 ft/min
Note: Velocity = 4005 x (the square root of velocity
pressure)
Quiz :d (1,800 ft/min) - √Answer :How fast does air with
a velocity pressure of 0.20 in w.g. move through a
square duct?
a. 400 ft/min
b. 1,200 ft/min
c. 1,600 ft/min
d. 1,800 ft/min
Note: Velocity = 4005 x (the square root of velocity
pressure)
Quiz :d (all of the above: honest, loyal, patient) -
√Answer :Customers depend on you to be ____.
a. honest
