NATE HVAC SUPPORT TECHNICIAN EXAM
SCRIPT 2026 QUESTIONS WITH ANSWERS
GRADED A+
●● What type of cabling must be used where the conductors pass
through an air duct? Answer: plenum rated cable
●● Why are wall studs, roof rafters, floor joists and ceiling joists spaced
apart at 16" or 24" center-to-center dimensions? Answer: A standard
sheet of plywood is 4′ × 8′ long, so having a board every 16″ or 24″ will
allow fastening the plywood to the framing securely.
●● What size return air filter grille can be installed in a ceiling with a
joist spacing of 16 inches on center without cutting any boards? Answer:
14x24
●● When liquid and vapor refrigerant exist simultaneously, what is the
refrigerant said to be? Answer: saturated
●● When using nitrogen to braze a refrigeration line, what PSI should
the nitrogen regulator be set to? Answer: 2 psi
●● What is the primary tool for tightening a flare connection? Answer:
tourqe wrench
SCRIPT 2026 QUESTIONS WITH ANSWERS
GRADED A+
●● What type of cabling must be used where the conductors pass
through an air duct? Answer: plenum rated cable
●● Why are wall studs, roof rafters, floor joists and ceiling joists spaced
apart at 16" or 24" center-to-center dimensions? Answer: A standard
sheet of plywood is 4′ × 8′ long, so having a board every 16″ or 24″ will
allow fastening the plywood to the framing securely.
●● What size return air filter grille can be installed in a ceiling with a
joist spacing of 16 inches on center without cutting any boards? Answer:
14x24
●● When liquid and vapor refrigerant exist simultaneously, what is the
refrigerant said to be? Answer: saturated
●● When using nitrogen to braze a refrigeration line, what PSI should
the nitrogen regulator be set to? Answer: 2 psi
●● What is the primary tool for tightening a flare connection? Answer:
tourqe wrench
