NATE Exam: Core Essentials questions
and Verified answers Update 2024-2025
d (very important) - ANS 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
d (all of the above: clear, complete, concise) - ANS 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
d (Refrigerant) - ANS When explaining to a customer that you have adjustedthe system
charge, which of the following terms is most appropriate?
a. Freon
b. Gas
c. Juice
d. Refrigerant
a (can help you diagnose the problem) - ANS Listening carefully to what acustomer
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
b (listen to the customer first, then ask questions) - ANS When you arrive at aservice
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
b (1,600 ft3) - ANS What is the volume of a room that measures 10 ft by 20 ftwith an 8-ft
ceiling?
a. 800 ft3
b. 1,600 ft3
c. 2,400 ft3
d. 3,200 ft3
b (1,200 CFM) - ANS What is the CFM requirements for an 1,800-ft2 housewith 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
c (1,600 CFM) - ANS What is the CFM requirement for an 2,400-ft2 housewith 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
a (79 in2) - ANS 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
d (1,800 ft/min) - ANS 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)
, d (1,800 ft/min) - ANS How fast does air with a velocity pressure of 0.20 inw.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)
d (all of the above: honest, loyal, patient) - ANS Customers depend on you tobe .
a. honest
b. loyal
c. patient
d. all of the above
c (demonstrate system operation and describe basic maintenance procedures to the
customer) - ANS Before leaving a service call, you should be sure to .
a. ask the customer for referrals
b. collect payment in cash if possible
c. demonstrate system operation and describe basic maintenance procedures to the
customer
d. try to sell the customer an equipment upgrade
d (All of the above: it can cut hard or soft drawn copper; it leaves no metal shavings to
contaminate the system; it produces a clean, square cut.) - ANS What is theadvantage
of using a tube cutter to cut copper pipe?
a. It can cut hard or soft drawn copper
b. It leaves no metal shavings to contaminate the system
c. It produces a clean, square cut
d. All of the above
a (soft drawn copper) - ANS Spring-type benders may be used on .
a. soft drawn copper
b. hard drawn copper
c. all copper pipe
d. steel pipe
a (make a mechanical joint in tubing) - ANS A flaring tool is used to .
a. make a mechanical joint in tubing
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