ESCO HEATING 208 NEWEST EXAM 2025
WITH MULTIPLE CHOICE OF QUESTIONS AND
DETAILED SOLVED SOLUTIONS ALREADY
GRADED A+ AND 100% GUARANTEE PASS
(JUST RELEASED!!!!!!!)
5. LP gas has a specific gravity of:
A: .4-.8
B: 1.0-1.1
C: 1.5-2.0
D: 2.5 -3.0 - CORRECT ANSWER-C: 1.5-2.0
6. What is the purpose of a spoiler screw located on a burner?
A: Mix combustion and dilution air
B: Mix primary and secondary air.
C: Mix primary air and gas.
D: Mix dilution and excess air. - CORRECT ANSWER-C: Mix primary
air and gas
,7. Furnace limit switches are wired in series with the:
A: low speed fan
B: high speed fan
C: gas valve
D: heat anticipator - CORRECT ANSWER-C: gas valve
8. A technician is using an extension ladder to work on roof top
unit. The top of the ladder should extend beyond the support
point.
A: l foot
B: 2 feet
C: 3 feet
D: 4 feet - CORRECT ANSWER-C: 3 feet
9.A technician determines that a natural gas furnace has a
defective heat exchanger. The technician should:
A: inform the homeowner.
B: turn the thermostat off.
C: turn the gas to the furnace off.
D: All of the above. - CORRECT ANSWER-D: All of the above.
10. A natural gas (standing pilot) furnace usually requires
____gas pressure at the manifold and burners.
A: 3.5 in- W.C.
B: 4.2 in. W.C.
C: 5.0 in, W.C.
, D: 7.0 in. W.C. - CORRECT ANSWER-A: 3.5 in- W.C.
11. The vent system for a condensing furnace is classified as
______by the National Field Gas Code.
A: Category I
B: Category II
C: Category III
D: Category IV - CORRECT ANSWER-D: Category IV
12. Type B vent pipe mast he kept at least _____from
combustible materials.
A: one eighth inch
B: one quarter inch
C: one half inch
D: one inch - CORRECT ANSWER-D: one inch
13. All condensing furnaces manufactured after 1992 must have
an AFUE rating ot at least:
A: 80%
B: 86%
C: 90%
D: 96% - CORRECT ANSWER-C
14. The ignition temperature of LP gas is:
A: 500°F - 600°F
B: 600°F-800°F
WITH MULTIPLE CHOICE OF QUESTIONS AND
DETAILED SOLVED SOLUTIONS ALREADY
GRADED A+ AND 100% GUARANTEE PASS
(JUST RELEASED!!!!!!!)
5. LP gas has a specific gravity of:
A: .4-.8
B: 1.0-1.1
C: 1.5-2.0
D: 2.5 -3.0 - CORRECT ANSWER-C: 1.5-2.0
6. What is the purpose of a spoiler screw located on a burner?
A: Mix combustion and dilution air
B: Mix primary and secondary air.
C: Mix primary air and gas.
D: Mix dilution and excess air. - CORRECT ANSWER-C: Mix primary
air and gas
,7. Furnace limit switches are wired in series with the:
A: low speed fan
B: high speed fan
C: gas valve
D: heat anticipator - CORRECT ANSWER-C: gas valve
8. A technician is using an extension ladder to work on roof top
unit. The top of the ladder should extend beyond the support
point.
A: l foot
B: 2 feet
C: 3 feet
D: 4 feet - CORRECT ANSWER-C: 3 feet
9.A technician determines that a natural gas furnace has a
defective heat exchanger. The technician should:
A: inform the homeowner.
B: turn the thermostat off.
C: turn the gas to the furnace off.
D: All of the above. - CORRECT ANSWER-D: All of the above.
10. A natural gas (standing pilot) furnace usually requires
____gas pressure at the manifold and burners.
A: 3.5 in- W.C.
B: 4.2 in. W.C.
C: 5.0 in, W.C.
, D: 7.0 in. W.C. - CORRECT ANSWER-A: 3.5 in- W.C.
11. The vent system for a condensing furnace is classified as
______by the National Field Gas Code.
A: Category I
B: Category II
C: Category III
D: Category IV - CORRECT ANSWER-D: Category IV
12. Type B vent pipe mast he kept at least _____from
combustible materials.
A: one eighth inch
B: one quarter inch
C: one half inch
D: one inch - CORRECT ANSWER-D: one inch
13. All condensing furnaces manufactured after 1992 must have
an AFUE rating ot at least:
A: 80%
B: 86%
C: 90%
D: 96% - CORRECT ANSWER-C
14. The ignition temperature of LP gas is:
A: 500°F - 600°F
B: 600°F-800°F
