GAS HEAT ESCO EXAM FINAL 2026
WITH QUESTIONS AND ACCURATE
ANSWERS | GRADED A+ | GAS HEAT
ESCO EXAM 2026 [NEW VERSION]
The pilot assembly orifice of a spark ignition furnace is completely clogged. The
technician should: - ANSWER-replace it
Carbon monoxide is dangerous. What percentage of CO is acceptable in a sample
of the flue gas? - ANSWER-0.04%
A technician starts up a 5 year old natural gas furnace. The main burner lights and
after 60 seconds the blower fan comes on, but the burner flames wavers in one
corner. The technician suspects: - ANSWER-A faulty heat exchanger
A technician starts a spark type ignition furnace. The main burners light, but the
spark igniter continues to spark. After 60 seconds, the flower fan comes on and the
burner goes out. The technician suspects a faulty: - ANSWER-faulty ignition board
(its not sensing the flame of main burner)
The proper instrument for calculating carbon dioxide in flue gas is a: - ANSWER-
combustion analyzer
, If voltage is applied across two speed terminals on a fan motor, the motor will: -
ANSWER-short out
The maximum external static pressure on a typical gas furnace blower system is: -
ANSWER-1.0 - 1.5 in WC
Induce draft furnaces have a vent safety switch that should open at ...? -
ANSWER-140 F
Thermostat wire comes in two standard gauges: - ANSWER-18 and 16 AWG
A technician solders a spade connector to a wire. What type of solder should he
use? - ANSWER-95/5
On a mid-efficiency induced draft furnace the anticipator is wired in series with the
___. - ANSWER-gas valve
To change the speed of a belt driven blower, the technician should: - ANSWER-
adjust motor and blower wheel pulleys
What is the CFM formula? - ANSWER-cfm= [sensible heat btu/h] DIVIDED by
[1.08 x TD]
The most common burner used in induced draft furnaces is: - ANSWER-inshot
A technician wraps a thermostat wire ten times around his clamp on ammeter and
measures 5.5 amps between R and W terminals on the thermostat sub-base. He
should set the heat acticipator to: - ANSWER-0.55
WITH QUESTIONS AND ACCURATE
ANSWERS | GRADED A+ | GAS HEAT
ESCO EXAM 2026 [NEW VERSION]
The pilot assembly orifice of a spark ignition furnace is completely clogged. The
technician should: - ANSWER-replace it
Carbon monoxide is dangerous. What percentage of CO is acceptable in a sample
of the flue gas? - ANSWER-0.04%
A technician starts up a 5 year old natural gas furnace. The main burner lights and
after 60 seconds the blower fan comes on, but the burner flames wavers in one
corner. The technician suspects: - ANSWER-A faulty heat exchanger
A technician starts a spark type ignition furnace. The main burners light, but the
spark igniter continues to spark. After 60 seconds, the flower fan comes on and the
burner goes out. The technician suspects a faulty: - ANSWER-faulty ignition board
(its not sensing the flame of main burner)
The proper instrument for calculating carbon dioxide in flue gas is a: - ANSWER-
combustion analyzer
, If voltage is applied across two speed terminals on a fan motor, the motor will: -
ANSWER-short out
The maximum external static pressure on a typical gas furnace blower system is: -
ANSWER-1.0 - 1.5 in WC
Induce draft furnaces have a vent safety switch that should open at ...? -
ANSWER-140 F
Thermostat wire comes in two standard gauges: - ANSWER-18 and 16 AWG
A technician solders a spade connector to a wire. What type of solder should he
use? - ANSWER-95/5
On a mid-efficiency induced draft furnace the anticipator is wired in series with the
___. - ANSWER-gas valve
To change the speed of a belt driven blower, the technician should: - ANSWER-
adjust motor and blower wheel pulleys
What is the CFM formula? - ANSWER-cfm= [sensible heat btu/h] DIVIDED by
[1.08 x TD]
The most common burner used in induced draft furnaces is: - ANSWER-inshot
A technician wraps a thermostat wire ten times around his clamp on ammeter and
measures 5.5 amps between R and W terminals on the thermostat sub-base. He
should set the heat acticipator to: - ANSWER-0.55
