1|Page
NATE GAS & HEAT EXAM LATEST 2026-2027 ACTUAL EXAM WITH
COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (100%
VERIFIED ANSWERS) |ALREADY GRADED A+| ||PROFESSOR
VERIFIED|| ||BRANDNEW!!!||
The pilot valve on a direct ignition gas furnace is operated by a
______.
a. 24-V signal from the thermostat
b. control voltage from the temperature switch
c. dc voltage from the flame rectifier
d. small voltage from the thermocouple - ANSWER-a
Residential load calculations should be completed according to
ACCA's _____.
a. Manual D
b. Manual J
c. Manual N
d. Manual P - ANSWER-b
When the output of a furnace matches the heat loss or heat gain
of the conditioned space, the system is said to be at its ______.
,2|Page
a. balance point
b. design temperature
c. full-load condition
d. reference point - ANSWER-a
Insulation is required on ductwork when ducts are run _____.
a. horizontally between floor joists
b. vertically between wall studs
c. overhead in dropped ceilings
d. through unconditioned spaces - ANSWER-d
What is the minimum recommended MERV rating for filters used
in residential equipment?
a. 2
b. 4
c. 6
d. 8 - ANSWER-d
,3|Page
When is an air filter most efficient at moving air?
a. When it is brand new
b. After the initial break-in period
c. At 50% of its life
d. Near the end of its life - ANSWER-a
When is an air filter most efficient at trapping dirt?
a. When it is brand new
b. After the initial break-in period
c. At 50% of its life
d. Near the end of its life - ANSWER-d
Electronic air cleaners work by _____.
a. electromagnetic force
b. ionizing particles
c. stripping neutrons from the particles
d. transistor reaction - ANSWER-b
, 4|Page
The problem of "filter bypass" is critical because it allows _____.
a. an increase in external static pressure
b. a reduction in overall air flow
c. air to leak from the ductwork
d. unfiltered air to pass through the equipment - ANSWER-d
The disconnect for a typical residential furnace is generally
located _____.
a. in the breaker box
b. inside the front panel
c. on the side of the unit
d. on the wall behind the unit - ANSWER-c
When you arrive to service a unit and nothing is operating, the
first thing you should check is the _____.
a. door switch
b. gas valve
c. power supply
NATE GAS & HEAT EXAM LATEST 2026-2027 ACTUAL EXAM WITH
COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (100%
VERIFIED ANSWERS) |ALREADY GRADED A+| ||PROFESSOR
VERIFIED|| ||BRANDNEW!!!||
The pilot valve on a direct ignition gas furnace is operated by a
______.
a. 24-V signal from the thermostat
b. control voltage from the temperature switch
c. dc voltage from the flame rectifier
d. small voltage from the thermocouple - ANSWER-a
Residential load calculations should be completed according to
ACCA's _____.
a. Manual D
b. Manual J
c. Manual N
d. Manual P - ANSWER-b
When the output of a furnace matches the heat loss or heat gain
of the conditioned space, the system is said to be at its ______.
,2|Page
a. balance point
b. design temperature
c. full-load condition
d. reference point - ANSWER-a
Insulation is required on ductwork when ducts are run _____.
a. horizontally between floor joists
b. vertically between wall studs
c. overhead in dropped ceilings
d. through unconditioned spaces - ANSWER-d
What is the minimum recommended MERV rating for filters used
in residential equipment?
a. 2
b. 4
c. 6
d. 8 - ANSWER-d
,3|Page
When is an air filter most efficient at moving air?
a. When it is brand new
b. After the initial break-in period
c. At 50% of its life
d. Near the end of its life - ANSWER-a
When is an air filter most efficient at trapping dirt?
a. When it is brand new
b. After the initial break-in period
c. At 50% of its life
d. Near the end of its life - ANSWER-d
Electronic air cleaners work by _____.
a. electromagnetic force
b. ionizing particles
c. stripping neutrons from the particles
d. transistor reaction - ANSWER-b
, 4|Page
The problem of "filter bypass" is critical because it allows _____.
a. an increase in external static pressure
b. a reduction in overall air flow
c. air to leak from the ductwork
d. unfiltered air to pass through the equipment - ANSWER-d
The disconnect for a typical residential furnace is generally
located _____.
a. in the breaker box
b. inside the front panel
c. on the side of the unit
d. on the wall behind the unit - ANSWER-c
When you arrive to service a unit and nothing is operating, the
first thing you should check is the _____.
a. door switch
b. gas valve
c. power supply
