HVAC JOURNEYMAN COMPREHENSIVE
EXAMINATION TEST 2026 QUESTIONS AND
SOLUTIONS COMPLETE REVIEW
◉Every absorption refrigerating system supported from the ground
shall rest on a concrete slab extending not less than _____ the
adjoining ground level.(A) 3 inches below(B) 3 inches above (C) 6
inches below(D) 6 inches above.. Answer: B. Slab extending not less
than 3" above the adjoining ground level. UMC Section 1106.2
◉Any part of a venting system installed at an angle greater than 45
degrees from the vertical is considered by code to be _____.(A)
vertica(B) horizontal l (C) a flat vent (D) an offset vent. Answer: B.
any part of the venting installed at an angle GREATER than 45
degrees is considered by this code to be Horizontal UMC Section
802.6.1.1
◉Listed transition ducts f or clothes dryers shall not exceed_____ feet
in length. A.3 B.4 C.5 D.6.. Answer: D. Dryers shall not exceed 6 feet
in length. UMC Section 504.3.2.1
◉Industrial product-conveying ducts and their fittings for abrasive
and nonabrasive dust or solid materials shall be constructed of
,_____.(A) sheet meta(B) polyvinyl chloride l (C) fiberglass (D) A and C
apply. Answer: A. Shall Be Constructed of sheet metal. UMC Section.
5 0 6.1
◉Industrial product-conveying ducts and their fittings for abrasive
and nonabrasive dust or solid materials shall be constructed of
_____.(A) sheet metal ((B) polyvinyl chloride C) fiberglass (D) A and C
apply. Answer: A 511.2
◉Unlisted vented gas fireplaces shall have a clearance at the sides
and rear of not less than _____ inches. Is the Answer: A. 10" B. 12" C
16" D. 18".. Answer: D. clearance of an unlisted vented gas fireplace
at the sides and the rear not less than 18". UMC Section 908.2(B)
◉Leaks in gas piping shall be located _____.(A) with a sniffer(B) with
a presto-lite flame (C) with a noncorrosive leak-detecting fluid (D)
by increasing the air pressure during a test until the leaks are heard
as a whistle.. Answer: C. leaks in a gas piping shall be located with a
non corrosive leak detecting fluid. UMC Section 1316.4.2
◉Condensate drain piping shall have a slope of not less than _____
inch per foot. A 1⁄8" B.¼" C.½" D. 1". Answer: A. Slope of not less
than 1/8" per foot. UMC Section 309.1
◉The minimum gauge or size steel wire used to support horizontal
metal ducts 10 inches or less in size is _____. A.14 AWG B.16 AWG
, C.18 AWG D.20 AWG. Answer: C. 18 Minimum Gauge note: AWG is
the abbreviation for "gauge size" Table 6-7(B)
◉When smoke detectors are required as part of an automatic
shutoff system, they shall be installed in the _____. A. return air duct
ahead of any fresh-air inlet(B) main supply air duct served by such
equipment(C) fresh-air inlet(D) main return and the main supply
duct.. Answer: B. shall be installed in the main supply air duct served
by equipment. UMC Section 609.0(5)
◉The largest fuel-burning appliance allowed in a room 100'W x 20'L
x 8'H without combustion air openingsis _____ Btu.(A) 80,000 (C)
140,000(B) 100,000 (D) 320,000. Answer: 31 D. 701.2.1
◉Return air ducts that serve a dwelling unit shall be permitted to be
of _____ construction? A.non-combustible B. combustible C. rated D.
none of the above.. Answer: B. Shall be permitted to be of
combustible type UMC Section 602.2 Ex (1)
◉Solid fuel-burning appliances _____ be connected to a venting
system that serves a gas- or oil-burningappliance.(A) shall (B) may
(C) shall not(D) with special approval may. Answer: C. appliances
shall not UMC Section 802.5.5.1
◉Any joint obtained by joining of metal parts with alloys that melt
at temperatures higher than 840°F, but lowerthan the melting
EXAMINATION TEST 2026 QUESTIONS AND
SOLUTIONS COMPLETE REVIEW
◉Every absorption refrigerating system supported from the ground
shall rest on a concrete slab extending not less than _____ the
adjoining ground level.(A) 3 inches below(B) 3 inches above (C) 6
inches below(D) 6 inches above.. Answer: B. Slab extending not less
than 3" above the adjoining ground level. UMC Section 1106.2
◉Any part of a venting system installed at an angle greater than 45
degrees from the vertical is considered by code to be _____.(A)
vertica(B) horizontal l (C) a flat vent (D) an offset vent. Answer: B.
any part of the venting installed at an angle GREATER than 45
degrees is considered by this code to be Horizontal UMC Section
802.6.1.1
◉Listed transition ducts f or clothes dryers shall not exceed_____ feet
in length. A.3 B.4 C.5 D.6.. Answer: D. Dryers shall not exceed 6 feet
in length. UMC Section 504.3.2.1
◉Industrial product-conveying ducts and their fittings for abrasive
and nonabrasive dust or solid materials shall be constructed of
,_____.(A) sheet meta(B) polyvinyl chloride l (C) fiberglass (D) A and C
apply. Answer: A. Shall Be Constructed of sheet metal. UMC Section.
5 0 6.1
◉Industrial product-conveying ducts and their fittings for abrasive
and nonabrasive dust or solid materials shall be constructed of
_____.(A) sheet metal ((B) polyvinyl chloride C) fiberglass (D) A and C
apply. Answer: A 511.2
◉Unlisted vented gas fireplaces shall have a clearance at the sides
and rear of not less than _____ inches. Is the Answer: A. 10" B. 12" C
16" D. 18".. Answer: D. clearance of an unlisted vented gas fireplace
at the sides and the rear not less than 18". UMC Section 908.2(B)
◉Leaks in gas piping shall be located _____.(A) with a sniffer(B) with
a presto-lite flame (C) with a noncorrosive leak-detecting fluid (D)
by increasing the air pressure during a test until the leaks are heard
as a whistle.. Answer: C. leaks in a gas piping shall be located with a
non corrosive leak detecting fluid. UMC Section 1316.4.2
◉Condensate drain piping shall have a slope of not less than _____
inch per foot. A 1⁄8" B.¼" C.½" D. 1". Answer: A. Slope of not less
than 1/8" per foot. UMC Section 309.1
◉The minimum gauge or size steel wire used to support horizontal
metal ducts 10 inches or less in size is _____. A.14 AWG B.16 AWG
, C.18 AWG D.20 AWG. Answer: C. 18 Minimum Gauge note: AWG is
the abbreviation for "gauge size" Table 6-7(B)
◉When smoke detectors are required as part of an automatic
shutoff system, they shall be installed in the _____. A. return air duct
ahead of any fresh-air inlet(B) main supply air duct served by such
equipment(C) fresh-air inlet(D) main return and the main supply
duct.. Answer: B. shall be installed in the main supply air duct served
by equipment. UMC Section 609.0(5)
◉The largest fuel-burning appliance allowed in a room 100'W x 20'L
x 8'H without combustion air openingsis _____ Btu.(A) 80,000 (C)
140,000(B) 100,000 (D) 320,000. Answer: 31 D. 701.2.1
◉Return air ducts that serve a dwelling unit shall be permitted to be
of _____ construction? A.non-combustible B. combustible C. rated D.
none of the above.. Answer: B. Shall be permitted to be of
combustible type UMC Section 602.2 Ex (1)
◉Solid fuel-burning appliances _____ be connected to a venting
system that serves a gas- or oil-burningappliance.(A) shall (B) may
(C) shall not(D) with special approval may. Answer: C. appliances
shall not UMC Section 802.5.5.1
◉Any joint obtained by joining of metal parts with alloys that melt
at temperatures higher than 840°F, but lowerthan the melting
