In a warm air heating system, the heated air should enter the rooms preferably via the

In a warm air heating system, the heated air should enter the rooms preferably via the

a) high wall registers on the inside wall
b) baseboard registers on the inside wall
c) baseboard registers on the outside wall
d) high wall registers on the outside wall
e) unit heaters on the outside wall




Answer: C

Which of the following is a type of outlet in a warm air heating system?

Which of the following is a type of outlet in a warm air heating system?

a) a grill
b) a register
c) a ceiling diffuser
d) a perforated panel
e) all of the above





Answer: E

The warm air outlets in a warm air heating system should always be located along the:

The warm air outlets in a warm air heating system should always be located along the:

a. Inside walls of the rooms at or near the floor level
b. Outside walls of the rooms on or near the ceiling and preferably over the windows
c. Inside walls of the rooms near the ceiling
d. Outside walls of the rooms at or near the floor level and preferably under the windows
e. North-facing walls




Answer: D

Heat exchangers in modern gas fired furnaces are made of:

Heat exchangers in modern gas fired furnaces are made of:

a. Brass
b. Copper
c. Aluminum
d. Steel
e. Cast iron





Answer: D

Which of the following is the most common type of warm air outlets used in a house?

Which of the following is the most common type of warm air outlets used in a house?

a. Ceiling diffusers
b. Wall diffusers
c. Perforated panels
d. Wall registers
e. Floor registers





Answer: E

The sealed ball bearings used on a blower in the warm air heating systems:

The sealed ball bearings used on a blower in the warm air heating systems:

a. Require regular lubrication
b. Require a few drops of oil once or twice a year
c. Should be dismantled every two years for maintenance
d. Should be dismantled every five years for maintenance
e. Require no lubrication




Answer: E

Most warm air heating furnaces are often equipped with a _____ to supply moisture to the air during the dry winter season.

Most warm air heating furnaces are often equipped with a _____ to supply moisture to the air during the dry winter season.

a. Dehumidifier
b. Humidifier
c. Water sprayer
d. Steamer
e. Vaporizer





Answer: B

The perimeter loop system of furnace ducting is ideal for a building with:

The perimeter loop system of furnace ducting is ideal for a building with:

a. No insulation in the walls
b. Concrete walls
c. No basement
d. Low headroom in the basement
e. No cold air returns




Answer: C

Standard mechanical air filters will remove:

Standard mechanical air filters will remove:

a. All particles in the air
b. Fine particles in the air
c. Smoke in the air
d. Odour in the air
e. Coarse dust in the air




Answer: E

Rooms that are stuffy and dry are created by:

Rooms that are stuffy and dry are created by:

a. Poor air distribution
b. A low supply air temperature
c. Too much ventilation air
d. Poorly insulated ducts
e. Lack of ventilation





Answer: E

Sleeve bearings on furnace fans require:

Sleeve bearings on furnace fans require:

a. No lubrication
b. Grease every six months
c. A few drops of oil every six months
d. A few drops of oil monthly
e. Fluid lubrication





Answer: C

An electronic filter is also known as:

An electronic filter is also known as:

a. an ionic filter
b. a HEPA filter
c. a static filter
d. an air-purifier
e. an electrostatic filter




Answer: E

Supply outlets should always be located:

Supply outlets should always be located:

a. In walls
b. In floors
c. In ceiling
d. To best prevent cold drafts
e. In baseboards




Answer: D

Insufficient heat throughout a building is likely caused by:

Insufficient heat throughout a building is likely caused by:

a. Too much ventilation
b. Insufficient heat input
c. Poorly insulated ducting
d. A missing filter
e. An unbalanced system



Answer: B

Plugged _____ on warm air heating and ventilating systems limit the air flow, and result in insufficient heating and fuel wastage.

Plugged _____ on warm air heating and ventilating systems limit the air flow, and result in insufficient heating and fuel wastage.

a. Filters
b. Heat exchangers
c. Diverters
d. Univents
e. Convectors




Answer: A

Electronic filters will remove:

Electronic filters will remove:

a. All particles from the air
b. Fine particles from the air
c. Odours
d. Smoke
e. Carbon monoxide




Answer: B

When fan belts show signs of fraying, cracking, and wear, they should be:

When fan belts show signs of fraying, cracking, and wear, they should be:

a. Repaired
b. Replaced
c. Reported
d. Re-tightened
e. Realigned





Answer: B

Air filters can be divided into two groups:

Air filters can be divided into two groups:

a. Permanent and disposable
b. Washable and dry-clean only
c. Dry and viscous
d. HEPA and MERV
e. Mechanical and electronic



Answer: E

Furnace heat exchangers should be checked for corrosion because:

Furnace heat exchangers should be checked for corrosion because:

a. Carbon monoxide could leak into the building
b. The holes reduce the furnace efficiency
c. Cold air could leak into the building
d. The air will become too dry for comfortable heating
e. Too much air would enter the furnace



Answer: A