HVAC CONTRACTOR EXAM LATEST 2026/2027
QUESTIONS and CORRECT DETAILED
ANSWERS ALREADY GRADED A+
An instrument that measures potential differences between 2 points in an
electrical circuit is called?
A. potentiometer
B. thermistor
C. ohmeter
D. voltmeter - CORRECT ANSWER-voltmeter
refer to house 1 drawing. the net heat gain through the west glazing on this house
is? select the closest answer
a. 2760 btuh
b. 1920 btuh
c. 2134 btuh
d. 1254 btuh - CORRECT ANSWER-2760 btuh
,refer to house 1 drawing calculate the net heat loss through the ceiling in
bedroom 2... the net heat loss is?
a. 546 btuh
b. 170 btuh
c. 214 btuh
d. 345 btuh - CORRECT ANSWER-170 btuh
on a natural draft furnace which of the following parts are not found
a. blower motor
b. standing pilot
c. limit switch
d. induced draft motor - CORRECT ANSWER-induced draft motor
residential thermostats operate with which of the following
a. resistance
b. control voltage
,c. current
d. potential - CORRECT ANSWER-control voltage
This device uses a thermal sensing bulb at the outlet of the evaporator to sense
temperature and control superheat
A. automatic expansion valve
B. thermostatic expansion valve
C. low side float
D. schraeder valve - CORRECT ANSWER-thermostatic expansion valve
when installing a reversing valve on a heat pump, how many brazed joints should
be made?
a. 3
b. 5
c. 4
d. 2 - CORRECT ANSWER-4
what would not be considered a misuse of a contractors license?
, a. advertising under mulitple names
b. employing service technicians to work under their license
c. loaning license to more than one company
d. continue to work on an expired license - CORRECT ANSWER-employing
service technicians to work under their license
what is used to prevent microbiological growth and help "dirty socky syndrome?
a. radiation
b. ultraviolet light
c. electrostatic filters
d. heat rated static filters - CORRECT ANSWER-ultraviolet light
a precisely sized drilled hole through which gas flows from the manifold to the
burner is known as what
a. spud
b. drill size
c. orifice
QUESTIONS and CORRECT DETAILED
ANSWERS ALREADY GRADED A+
An instrument that measures potential differences between 2 points in an
electrical circuit is called?
A. potentiometer
B. thermistor
C. ohmeter
D. voltmeter - CORRECT ANSWER-voltmeter
refer to house 1 drawing. the net heat gain through the west glazing on this house
is? select the closest answer
a. 2760 btuh
b. 1920 btuh
c. 2134 btuh
d. 1254 btuh - CORRECT ANSWER-2760 btuh
,refer to house 1 drawing calculate the net heat loss through the ceiling in
bedroom 2... the net heat loss is?
a. 546 btuh
b. 170 btuh
c. 214 btuh
d. 345 btuh - CORRECT ANSWER-170 btuh
on a natural draft furnace which of the following parts are not found
a. blower motor
b. standing pilot
c. limit switch
d. induced draft motor - CORRECT ANSWER-induced draft motor
residential thermostats operate with which of the following
a. resistance
b. control voltage
,c. current
d. potential - CORRECT ANSWER-control voltage
This device uses a thermal sensing bulb at the outlet of the evaporator to sense
temperature and control superheat
A. automatic expansion valve
B. thermostatic expansion valve
C. low side float
D. schraeder valve - CORRECT ANSWER-thermostatic expansion valve
when installing a reversing valve on a heat pump, how many brazed joints should
be made?
a. 3
b. 5
c. 4
d. 2 - CORRECT ANSWER-4
what would not be considered a misuse of a contractors license?
, a. advertising under mulitple names
b. employing service technicians to work under their license
c. loaning license to more than one company
d. continue to work on an expired license - CORRECT ANSWER-employing
service technicians to work under their license
what is used to prevent microbiological growth and help "dirty socky syndrome?
a. radiation
b. ultraviolet light
c. electrostatic filters
d. heat rated static filters - CORRECT ANSWER-ultraviolet light
a precisely sized drilled hole through which gas flows from the manifold to the
burner is known as what
a. spud
b. drill size
c. orifice
