NATE Gas with correct answers 2026
What-precautions,-if-any,-must-be-taken-when-installing-a-gas-furnace-on-a-wood-platform-in-
an-attic?---correct-answer-B:-Use-a-zero-clearance-furnace-or-add-a-non-combustible-base.
The-gas-control-valve-may-be-damaged-if-exposed-to-an-inlet-pressure-above:---correct-
answer-B:-14in-WC
How-may-a-technician-terminate-the-intake-and-exhaust-for-proper-operation-of-a-high-
efficiency-gas-furnace-when-using-scheduled-40-PVC-pipe:---correct-answer-B:-Use-the-
specific-manufacturer's-termination-kit-or-make-on-to-meet-their-requirements.
The-LP-gas-manifold-pressure-is-commonly:---correct-answer-10-to-11-in.-W.C.
Using-a-voltmeter,-how-does-a-technician-determine-voltage-drop-at-a-gas-furnace?---correct-
answer-D:-With-the-furnace-not-operating-and-then-with-the-furnace-operating.
How-is-the-setting-on-a-4-speed-PSC-blower-motor-changed?---correct-answer-A:-Changing-
the-motor-tap-connection.
Which-of-the-following-is-recommended-for-a-pressurization-leak-test-of-a-fuel-gas-pipe?---
correct-answer-B:-Compressed-air.
, A-technician-measures-the-return-air-temperature-of-a-100,000-BTU-output-gas-furnace-to-be-
65-degrees-F-and-the-supply-side-air-temperature-is-135-degrees-F.-What-is-the-CFM?---
correct-answer-B:-1323
A-dirty-or-clogged-air-filter-in-an-operating-gas-furnace-can-cause:---correct-answer-A:-An-
increased-temperature-rise.
Bent-vanes-on-a-direct-drive-blower-wheel-in-an-air-handler-can-cause...---correct-answer-D:-
Loss-in-airflow,-excessive-blower-motor-wear-and-increased-noise.
A-gas-dryer-can-interfere-with-the-operation-of-a-nearby-natural-draft-gas-furnace-with-an-
atmospheric-burner-by:---correct-answer-C:-Stealing-combustion-air-preventing-complete-fuel-
burning.
During-a-preventive-maintenance-check-of-a-gas-furnace,-ductwork-should-always-be-checked-
for:---correct-answer-B:-Leaks-and-damages.
When-performing-a-cycling-check-during-a-preventive-maintenance-call,-the-technician-
should-first-check-with-the-owner-of-equipment-for-their-opinion-of-performance.-The-next-
step-is-to-turn-the-unit-off-at-the-thermostat-SYSTEM-switch.-What-should-the-technician-do-
next?---correct-answer-C:-Set-fan-switch-to-on-and-check-that-the-blower-is-running.
The-technician-is-checking-the-operation-of-an-induced-draft-gas-furnace-with-an-
atmospheric-burner-and-a-direct-ignition-system.-On-a-call-for-heat-the:---correct-answer-D:-
Check-the-gas-supply-and/or-gas-valve.
The-technician-is-servicing-a-gas-furnace-located-in-a-basement-and-the-complaint-is-"not-
enough-heat"-the-following-conditions-exist:---correct-answer-B:-the-air-side-is-leaking-at-one-
or-more-supply-ducts.
What-precautions,-if-any,-must-be-taken-when-installing-a-gas-furnace-on-a-wood-platform-in-
an-attic?---correct-answer-B:-Use-a-zero-clearance-furnace-or-add-a-non-combustible-base.
The-gas-control-valve-may-be-damaged-if-exposed-to-an-inlet-pressure-above:---correct-
answer-B:-14in-WC
How-may-a-technician-terminate-the-intake-and-exhaust-for-proper-operation-of-a-high-
efficiency-gas-furnace-when-using-scheduled-40-PVC-pipe:---correct-answer-B:-Use-the-
specific-manufacturer's-termination-kit-or-make-on-to-meet-their-requirements.
The-LP-gas-manifold-pressure-is-commonly:---correct-answer-10-to-11-in.-W.C.
Using-a-voltmeter,-how-does-a-technician-determine-voltage-drop-at-a-gas-furnace?---correct-
answer-D:-With-the-furnace-not-operating-and-then-with-the-furnace-operating.
How-is-the-setting-on-a-4-speed-PSC-blower-motor-changed?---correct-answer-A:-Changing-
the-motor-tap-connection.
Which-of-the-following-is-recommended-for-a-pressurization-leak-test-of-a-fuel-gas-pipe?---
correct-answer-B:-Compressed-air.
, A-technician-measures-the-return-air-temperature-of-a-100,000-BTU-output-gas-furnace-to-be-
65-degrees-F-and-the-supply-side-air-temperature-is-135-degrees-F.-What-is-the-CFM?---
correct-answer-B:-1323
A-dirty-or-clogged-air-filter-in-an-operating-gas-furnace-can-cause:---correct-answer-A:-An-
increased-temperature-rise.
Bent-vanes-on-a-direct-drive-blower-wheel-in-an-air-handler-can-cause...---correct-answer-D:-
Loss-in-airflow,-excessive-blower-motor-wear-and-increased-noise.
A-gas-dryer-can-interfere-with-the-operation-of-a-nearby-natural-draft-gas-furnace-with-an-
atmospheric-burner-by:---correct-answer-C:-Stealing-combustion-air-preventing-complete-fuel-
burning.
During-a-preventive-maintenance-check-of-a-gas-furnace,-ductwork-should-always-be-checked-
for:---correct-answer-B:-Leaks-and-damages.
When-performing-a-cycling-check-during-a-preventive-maintenance-call,-the-technician-
should-first-check-with-the-owner-of-equipment-for-their-opinion-of-performance.-The-next-
step-is-to-turn-the-unit-off-at-the-thermostat-SYSTEM-switch.-What-should-the-technician-do-
next?---correct-answer-C:-Set-fan-switch-to-on-and-check-that-the-blower-is-running.
The-technician-is-checking-the-operation-of-an-induced-draft-gas-furnace-with-an-
atmospheric-burner-and-a-direct-ignition-system.-On-a-call-for-heat-the:---correct-answer-D:-
Check-the-gas-supply-and/or-gas-valve.
The-technician-is-servicing-a-gas-furnace-located-in-a-basement-and-the-complaint-is-"not-
enough-heat"-the-following-conditions-exist:---correct-answer-B:-the-air-side-is-leaking-at-one-
or-more-supply-ducts.
