TREC Home Inspector National Exam -
HVAC Questions and Correct Answers.
Already Passed
For mechanical systems, a level working space at least _____________________
inches deep and _____________________ inches wide shall be provided in front
of the control side to service an appliance.
30"; 30"
When mechanical equipment is located in attics, it shall not be further than
_____________________feet from the attic access.
20'
Attics containing mechanical appliance shall be provided with an opening and a
clear and unobstructed passageway to allow removal of the
_____________________ appliance.
largest
Mechanical appliances installed in attics shall have a luminaire controlled by a
switch located at the required _____________________ _____________________
and a receptacle outlet provided at or near the appliance location.
passageway opening
Mechanical appliances suspended from the floor shall have a clearance of not
less than _____________________inches from the ground.
6"
Mechanical appliances having an ignition source shall be elevated such that the
source of ignition is not less than _____________________above the floor in
garages.
18"
Supports and foundations for the outdoor unit of a heat pump shall be raised at
least _____________________ inches above the ground.
3"
, A 4-inch radius mitered 45 degree elbow dryer exhaust duct fitting shall reduce
the maximum 35-foot length of a dryer duct by _____________________ feet,
_____________________inches.
2'; 6"
Where a space for a _____________________ _____________________ is
provided, an exhaust duct system shall be installed.
clothes dryer
Under-floor plenums shall be _____________________ in new structures.
prohibited
Outdoor and return air for a forced-air heating or cooling system shall not be
taken from _____________________.
closets, bathrooms, toilet rooms, kitchens, garages, boiler rooms, furnace rooms,
unconditioned attics, or other dwelling units
For mechanical system installations in flood hazard areas,
_____________________ _____________________ openings shall be located at or
above the required elevation.
combustion air
Manually operated vent _____________________ shall not be installed except in
connectors or chimneys serving solid-fuel-burning appliances.
dampers
Freestanding or built-in ranges shall have a vertical clearance above the cooking
top of not less than _____________________ inches to unprotected combustible
material.
30"
Sauna heaters shall be equipped with a thermostat that will limit room
temperature to not greater than _____________________degrees F.
194⁰F
For gas appliance installations using the two-permanent-openings method for
combustible air from the outdoors, one opening shall be within
_____________________ inches of the top and one within
_____________________inches of the bottom of the space.
HVAC Questions and Correct Answers.
Already Passed
For mechanical systems, a level working space at least _____________________
inches deep and _____________________ inches wide shall be provided in front
of the control side to service an appliance.
30"; 30"
When mechanical equipment is located in attics, it shall not be further than
_____________________feet from the attic access.
20'
Attics containing mechanical appliance shall be provided with an opening and a
clear and unobstructed passageway to allow removal of the
_____________________ appliance.
largest
Mechanical appliances installed in attics shall have a luminaire controlled by a
switch located at the required _____________________ _____________________
and a receptacle outlet provided at or near the appliance location.
passageway opening
Mechanical appliances suspended from the floor shall have a clearance of not
less than _____________________inches from the ground.
6"
Mechanical appliances having an ignition source shall be elevated such that the
source of ignition is not less than _____________________above the floor in
garages.
18"
Supports and foundations for the outdoor unit of a heat pump shall be raised at
least _____________________ inches above the ground.
3"
, A 4-inch radius mitered 45 degree elbow dryer exhaust duct fitting shall reduce
the maximum 35-foot length of a dryer duct by _____________________ feet,
_____________________inches.
2'; 6"
Where a space for a _____________________ _____________________ is
provided, an exhaust duct system shall be installed.
clothes dryer
Under-floor plenums shall be _____________________ in new structures.
prohibited
Outdoor and return air for a forced-air heating or cooling system shall not be
taken from _____________________.
closets, bathrooms, toilet rooms, kitchens, garages, boiler rooms, furnace rooms,
unconditioned attics, or other dwelling units
For mechanical system installations in flood hazard areas,
_____________________ _____________________ openings shall be located at or
above the required elevation.
combustion air
Manually operated vent _____________________ shall not be installed except in
connectors or chimneys serving solid-fuel-burning appliances.
dampers
Freestanding or built-in ranges shall have a vertical clearance above the cooking
top of not less than _____________________ inches to unprotected combustible
material.
30"
Sauna heaters shall be equipped with a thermostat that will limit room
temperature to not greater than _____________________degrees F.
194⁰F
For gas appliance installations using the two-permanent-openings method for
combustible air from the outdoors, one opening shall be within
_____________________ inches of the top and one within
_____________________inches of the bottom of the space.
