MD HVAC MASTERS CERTIFICATION
EVALUATION SET 2026 ANSWERS
GUARANTEED PASS
⫸ A 2000 sq. ft. "Type II" dry-cleaning systems shall be provided with
an exhaust no less than __________ CFM's. Answer: 2000
⫸ A bathroom in a dwelling unit must be provided with a minimum
intermittent exhaust of __________. Answer: 50 CFM
⫸ A hot-water heating boiler that has a 5,000,000 BTU/HR input shall
have a minimum clearance of _____________ from the top of the boiler
to the ceiling. Answer: 3 feet
⫸ A heater installed in a public garage must be installed a minimum
distance of ____________ above the floor? Answer: 8 feet
⫸ ______________ is a tube or pipe used to carry refrigerant gas from
evaporator to the compressor Answer: Suction line
⫸ Commercial appliance exhaust outlets that terminate above roof shall
have the discharge opening located not less than ___________ inches
above the roof surface. Answer: 40
, ⫸ A run winding in a compressor has _____________ resistance than
the start winding. Answer: Less
⫸ A duct that has an operating temperature of 150 deg F shall be
insulated to limit the exposed surface temperature to ___________.
Answer: 120 °F
⫸ Hydronic pipe system should be cleaned with water and
_____________ after installation. Answer: Trisodium Phosphate
⫸ Using a psychrometric chart in the Modern Refrigeration, what will
the wet bulb be if the dry bulb is 80 degrees and the humidity is 30%?
Answer: 60 °F
⫸ Outside air exhaust and intake openings shall be located a minimum
of ____________ feet from lot lines or building on the same lot.
Answer: 10
⫸ Down - pipe support material must not promote: Answer: Galvanic
action
⫸ Central HVAC systems shall have air filters installed in which of the
following locations? Answer: Upstream from any exchanger coil
⫸ An auxiliary drain pan used in secondary drain systems for an a/c
systems shall have a minimum depth of ________ inch. Answer: 1 ½
EVALUATION SET 2026 ANSWERS
GUARANTEED PASS
⫸ A 2000 sq. ft. "Type II" dry-cleaning systems shall be provided with
an exhaust no less than __________ CFM's. Answer: 2000
⫸ A bathroom in a dwelling unit must be provided with a minimum
intermittent exhaust of __________. Answer: 50 CFM
⫸ A hot-water heating boiler that has a 5,000,000 BTU/HR input shall
have a minimum clearance of _____________ from the top of the boiler
to the ceiling. Answer: 3 feet
⫸ A heater installed in a public garage must be installed a minimum
distance of ____________ above the floor? Answer: 8 feet
⫸ ______________ is a tube or pipe used to carry refrigerant gas from
evaporator to the compressor Answer: Suction line
⫸ Commercial appliance exhaust outlets that terminate above roof shall
have the discharge opening located not less than ___________ inches
above the roof surface. Answer: 40
, ⫸ A run winding in a compressor has _____________ resistance than
the start winding. Answer: Less
⫸ A duct that has an operating temperature of 150 deg F shall be
insulated to limit the exposed surface temperature to ___________.
Answer: 120 °F
⫸ Hydronic pipe system should be cleaned with water and
_____________ after installation. Answer: Trisodium Phosphate
⫸ Using a psychrometric chart in the Modern Refrigeration, what will
the wet bulb be if the dry bulb is 80 degrees and the humidity is 30%?
Answer: 60 °F
⫸ Outside air exhaust and intake openings shall be located a minimum
of ____________ feet from lot lines or building on the same lot.
Answer: 10
⫸ Down - pipe support material must not promote: Answer: Galvanic
action
⫸ Central HVAC systems shall have air filters installed in which of the
following locations? Answer: Upstream from any exchanger coil
⫸ An auxiliary drain pan used in secondary drain systems for an a/c
systems shall have a minimum depth of ________ inch. Answer: 1 ½
