CKD CKD Appliances & Kitchen Ventilation 2

Question 1

What is the recommended minimum width of a range hood relative to the cooking surface below it?

Accepted Answer

3 inches wider on each side than the cooktop

Answer

Range hoods should extend at least 3 inches beyond each side of the cooking surface to effectively capture rising vapors and grease.

Question 2

What is the primary disadvantage of a recirculating (ductless) range hood compared to a ducted hood?

Accepted Answer

Cannot remove heat and moisture from the kitchen

Answer

Ductless range hoods filter grease and odors through charcoal filters but recirculate air back into the kitchen, unable to remove heat and moisture.

Question 3

What is the recommended mounting height range for an under-cabinet range hood above a gas cooking surface?

Accepted Answer

24–30 inches

Answer

Under-cabinet hoods over gas cooking surfaces are typically mounted 24–30 inches above the grates for optimal capture without creating a fire hazard.

Question 4

What is 'makeup air' in the context of kitchen ventilation design?

Accepted Answer

Replacement air supplied to compensate for air exhausted by a range hood

Answer

Makeup air is replacement air that must be supplied to a kitchen when a high-CFM hood exhausts large volumes, preventing negative pressure and backdrafting.

Question 5

Which type of range hood is suspended from the ceiling above an island or peninsula cooking surface?

Accepted Answer

Island (ceiling-mount) hood

Answer

Island or ceiling-mount hoods are suspended from the ceiling over cooktops on islands or peninsulas where wall mounting is not possible.

CKD - Certified Kitchen Designer Practice Test

CKD - Certified Kitchen Designer Practice Test

CKD CKD Appliances & Kitchen Ventilation 2