Perimeter Suction VS Full Surface Suction

This article outlines all details regarding perimeter suction and full surface suction models. 

What is Perimeter Suction?

Perimeter suction refers to a design feature in which the range hood does not possess a complete opening beneath it, positioned above the cooktop. Instead, this method involves the intake of airflow from the corners or along the sides of the range hood. Typically, this style of suction is equipped with a stainless steel door that opens to expose the filters located behind it. 

When is it best to use Perimeter suction? 

Perimeter suction is primarily used on ceiling hood range hoods as it improves the range hood functionality at higher distances.

How does Perimeter suction work?

When utilizing your cooktop, the smoke and steam that are generated will begin to expand. As this smoke and steam expand, rather than rising against the stainless steel door, they will move towards the open crevices located on the lower sides of the range hood. It is in this area that the smoke, steam, and odors are drawn in and expelled. The greater the distance from the source, the more time is allowed for the expansion of the steam and smoke to take place. 

What is Full Surface suction?

Full surface suction is when the range hood has a full opening on the bottom portion facing the cooktop.

When is it best to use Full Surface suction? 

The closer the range hood is installed to the cooktop, the more effective its performance will be. The recommended installation heights are listed below based on model type:

• For most range hoods, the recommended distance is between 26 inches and 30 inches above the cooktop.
• For BBQ range hoods, the recommended distance is typically between 30 inches and 36 inches
• For Ceiling Hoods, as these are made to work at higher distances, the recommended installation height is between 48" to 60" for best performance

Range hoods are engineered with these distances in consideration. Depending on the specific cooktop utilized, installing the range hood at a height closer than this may violate building codes. Additionally, the power of the motor influences the permissible height for the installation of the range hood.

How does Full Surface suction work?

Full surface suction is a large opening on the bottom of the range hood, only blocked by aluminum mesh filters or stainless steel baffles. This provides the smoke and steam with a more focused point of entry. The closer your range hood is to the cooktop the more smoke and steam can enter the ducting and expel from your home. 

Which range hoods use Perimeter or Full Surface?