HVAC EXAM
Sealing up even small openings in a building conserves energy because... - Answer it
stops the infiltration of outside air or ex-filtration of comfortable conditioned inside air by
way of convection currents
Heat is easily transferred through windows and chimneys and not easily through
insulation - Answer True
Which of the following items would not be a part of a gas furnace forced air perimeter
heating system? - Answer Boiler
In a forced air heating system, a(n)... is a system of ducts that brings cold air back to the
furnace from various rooms of the building - Answer Air return
Select all the types of material that are satisfactory for duct work in a warm air perimeter
system - Answer Sheet Metal
Vitrified tile
concrete pipe
plastic pipe
A manifold, found in many hydronic heating systems, is used only if... - Answer the
building has zoned heating
In an air cooling system, there are two coils through which refrigerant is circulated. One,
called a ___(1)___ , absorbs heat from the warm air passing over it. The heated
refrigerant is then pumped through another coil called a ___(2)___, where the
refrigerant passes its collected heat to the atmosphere. - Answer 1. evaporator
2. condenser
Testing has shown that in a modern home, indoor air should be exchanged with fresh
outdoor air... - Answer every two to three hours
A voluntary labeling program called ______ Star offered marketing advantages to
manufacturers while alerting consumers to what products could save them money in
operating costs. - Answer Energy
(BAH) The author recommends that you do which of the following. - Answer Engage
your HVAC subcontractor early in the design process.
Make sure your design includes a central spot for the air-handling equipment
Make sure there is plenty of room to run ducts.
Even the best windows create conduction losses more than ____ times higher than
walls. - Answer 10
, The _____ furnace costs more, but you can use one over a crawl space or where ducts
run under the slab. - Answer down-flow
Selects the statements that are true about a horizontal furnace. - Answer Used primarily
for attic and crawl space applications
A larger and more efficient unit is required to offset energy losses that come with
placing your furnace in an unconditioned space.
Today, most residential cooling is supplied by a "_________" which consists of an
outdoor condensing coil and compressor connected to an indoor evaporative coil with
refrigerant tubing. - Answer split system
Although heat pumps cost a few hundred dollars more than a standard air conditioner,
they can save money when used in ______ climates. - Answer temperate
Which of the following is (are) included in a package unit? - Answer Compressor
Blower
Coils
Heater
Which of the following is (are) included in heating calculations? - Answer Heat
transferred through walls
Heat transferred through windows
Heat transferred through doors
Heat transferred through ceilings
Heat transferred through foundation
You don't need to provide extra humidity during winter months because improved air-
sealing techniques preserve indoor humidity. - Answer True
Select the true statement about registers. - Answer Supply registers control the direction
and throw of air into a room.
What is the preferred material for supply ducts in conditioned spaces? - Answer Sheet
metal
A _____ system has a spiderweb-like distribution network of supply ducts running
straight from the furnace to each outlet. This provides a direct method of air delivery that
maintains balanced pressure throughout the system. - Answer radial
It is both illegal and unwise to conceal ductwork in a bulkhead or chase. - Answer False
Returns can work either actively or passively - Answer True
_______-room returns generally run more quietly and afford more privacy. - Answer
Multiple
Sealing up even small openings in a building conserves energy because... - Answer it
stops the infiltration of outside air or ex-filtration of comfortable conditioned inside air by
way of convection currents
Heat is easily transferred through windows and chimneys and not easily through
insulation - Answer True
Which of the following items would not be a part of a gas furnace forced air perimeter
heating system? - Answer Boiler
In a forced air heating system, a(n)... is a system of ducts that brings cold air back to the
furnace from various rooms of the building - Answer Air return
Select all the types of material that are satisfactory for duct work in a warm air perimeter
system - Answer Sheet Metal
Vitrified tile
concrete pipe
plastic pipe
A manifold, found in many hydronic heating systems, is used only if... - Answer the
building has zoned heating
In an air cooling system, there are two coils through which refrigerant is circulated. One,
called a ___(1)___ , absorbs heat from the warm air passing over it. The heated
refrigerant is then pumped through another coil called a ___(2)___, where the
refrigerant passes its collected heat to the atmosphere. - Answer 1. evaporator
2. condenser
Testing has shown that in a modern home, indoor air should be exchanged with fresh
outdoor air... - Answer every two to three hours
A voluntary labeling program called ______ Star offered marketing advantages to
manufacturers while alerting consumers to what products could save them money in
operating costs. - Answer Energy
(BAH) The author recommends that you do which of the following. - Answer Engage
your HVAC subcontractor early in the design process.
Make sure your design includes a central spot for the air-handling equipment
Make sure there is plenty of room to run ducts.
Even the best windows create conduction losses more than ____ times higher than
walls. - Answer 10
, The _____ furnace costs more, but you can use one over a crawl space or where ducts
run under the slab. - Answer down-flow
Selects the statements that are true about a horizontal furnace. - Answer Used primarily
for attic and crawl space applications
A larger and more efficient unit is required to offset energy losses that come with
placing your furnace in an unconditioned space.
Today, most residential cooling is supplied by a "_________" which consists of an
outdoor condensing coil and compressor connected to an indoor evaporative coil with
refrigerant tubing. - Answer split system
Although heat pumps cost a few hundred dollars more than a standard air conditioner,
they can save money when used in ______ climates. - Answer temperate
Which of the following is (are) included in a package unit? - Answer Compressor
Blower
Coils
Heater
Which of the following is (are) included in heating calculations? - Answer Heat
transferred through walls
Heat transferred through windows
Heat transferred through doors
Heat transferred through ceilings
Heat transferred through foundation
You don't need to provide extra humidity during winter months because improved air-
sealing techniques preserve indoor humidity. - Answer True
Select the true statement about registers. - Answer Supply registers control the direction
and throw of air into a room.
What is the preferred material for supply ducts in conditioned spaces? - Answer Sheet
metal
A _____ system has a spiderweb-like distribution network of supply ducts running
straight from the furnace to each outlet. This provides a direct method of air delivery that
maintains balanced pressure throughout the system. - Answer radial
It is both illegal and unwise to conceal ductwork in a bulkhead or chase. - Answer False
Returns can work either actively or passively - Answer True
_______-room returns generally run more quietly and afford more privacy. - Answer
Multiple
