GAS HEAT ESCO CERTIFICATION STUDY
EXAM 2026 WITH 100 QUESTIONS AND
ACCURATE ANSWERS | ALREADY GRADED
A+ | GUARANTEED PASS | GAS HEAT ESCO
CERTIFICATION EXAM 2026 [BRAND NEW]
What is the purpose of using an adjustable shutter on older burners - ANSWER-
Mix primary air and gas
The primary function of the limit switch is to de energize the - ANSWER-Gas
valve if the furnace overheats
A tech is using an extension ladder to work on a RTU, the top of the ladder should
extend beyond the support point by - ANSWER-3 feet
A homeowner complained that his furnace makes a loud bang upon ignition, the
tech decides to check the gas pressure and he finds 2.2 in WC at t to he manifold,
the tech should - ANSWER-Check supply gas pressure
How much current is typically conducted through the flame sensor - ANSWER-1-
10 micro amps
A typical stack vent temperature on a natural draft furnace is - ANSWER-350-450
, A customer complains that a 2 year old direct hot surface ignition furnace will not
light. The inducer motor runs, the pressure switch closes, and the igniter begins to
glow, but there is no ignition. The furnace locks out while attempting to light, after
resetting the furnace, 17 VAC is measured at the gas valve and the tech correctly
concludes - ANSWER-The board is faulty
The pilot assembly orifice of a spark ignition furnace is completely clogged, the
tech should - ANSWER-Replace it
Carbon monoxide is dangerous what is the maximum level of undiluted CO that is
acceptable in a sample of the flue gas - ANSWER-400 ppm
A tech starts up a natural gas furnace, the main burner lights and after about 60
seconds the blower fan kicks on, but the burner flames waver in one corner, the
tech suspects - ANSWER-A faulty heat exchanger
A tech determines that a natural gas furnace has a defective heat exchanger. The
tech should - ANSWER-I from the homeowner and turn off the gas supply
The gas pressure usually required at the manifold and burners in a natural gas
furnace is - ANSWER-3.5 in WC
The NFGC classifies a vent system for a condensing furnace as - ANSWER-CAT
IV
The minimum distance type B vent pipe must be from combustible materials is -
ANSWER-1/2 inch
EXAM 2026 WITH 100 QUESTIONS AND
ACCURATE ANSWERS | ALREADY GRADED
A+ | GUARANTEED PASS | GAS HEAT ESCO
CERTIFICATION EXAM 2026 [BRAND NEW]
What is the purpose of using an adjustable shutter on older burners - ANSWER-
Mix primary air and gas
The primary function of the limit switch is to de energize the - ANSWER-Gas
valve if the furnace overheats
A tech is using an extension ladder to work on a RTU, the top of the ladder should
extend beyond the support point by - ANSWER-3 feet
A homeowner complained that his furnace makes a loud bang upon ignition, the
tech decides to check the gas pressure and he finds 2.2 in WC at t to he manifold,
the tech should - ANSWER-Check supply gas pressure
How much current is typically conducted through the flame sensor - ANSWER-1-
10 micro amps
A typical stack vent temperature on a natural draft furnace is - ANSWER-350-450
, A customer complains that a 2 year old direct hot surface ignition furnace will not
light. The inducer motor runs, the pressure switch closes, and the igniter begins to
glow, but there is no ignition. The furnace locks out while attempting to light, after
resetting the furnace, 17 VAC is measured at the gas valve and the tech correctly
concludes - ANSWER-The board is faulty
The pilot assembly orifice of a spark ignition furnace is completely clogged, the
tech should - ANSWER-Replace it
Carbon monoxide is dangerous what is the maximum level of undiluted CO that is
acceptable in a sample of the flue gas - ANSWER-400 ppm
A tech starts up a natural gas furnace, the main burner lights and after about 60
seconds the blower fan kicks on, but the burner flames waver in one corner, the
tech suspects - ANSWER-A faulty heat exchanger
A tech determines that a natural gas furnace has a defective heat exchanger. The
tech should - ANSWER-I from the homeowner and turn off the gas supply
The gas pressure usually required at the manifold and burners in a natural gas
furnace is - ANSWER-3.5 in WC
The NFGC classifies a vent system for a condensing furnace as - ANSWER-CAT
IV
The minimum distance type B vent pipe must be from combustible materials is -
ANSWER-1/2 inch
