Normally, extractors with downdraft or hob extractors are equipped with a recirculating air system. Here, the extracted air is blown through the filter into the kitchen cabinet. This has several disadvantages:

• The extraction performance is worse because the filter obstructs the air flow.
• The higher required power level of the downdraft extractor increases the noise level.
• The extractor has to run on for a long time to dry the filter. Especially in open kitchens, this impairs the living comfort.
• The damp cooking fumes can condense in the kitchen cabinet. This constant exposure to moisture damages the furniture body. Grease contaminates the kitchen cupboard.
• Odours during cooking are only partially eliminated; the older the filter, the worse it neutralises the odour pollution.
• The filter has to be changed regularly, which means constant costs.

The complete solution from Naber:  downdraft and hob extractors in exhaust air mode

But these problems are not a must. With the air duct system COMPAIR^® flow and the wall conduct TURBO 150 including Thermobox, switching to downdraft with exhaust air is simple and technically perfect. For every installation situation. For a newly planned kitchen or for retrofitting. And the best thing is: you get all the necessary components from a single source.

Your advantages:

• Flexible and precisely fitting flat duct system in plastic or metal construction.
• With the appropriate connectors suitable for any downdraft or hob extractor from any manufacturer worldwide.
• Aerodynamically optimised for maximum performance and minimum losses.
• Energy-saving due to the integrated THERMOBOX.   
• Installation in the base of the kitchen cabinet or pressure-resistant installation in the floor structure.
• Weatherproof design blinds made of stainless steel with perfect air guidance prevents soiling of the outer wall.

Five concrete planning examples for your installation situation

Here you’ll find the right exhaust air solution for downdraft for the most common kitchen floor plans. With a complete parts list for all the components required. Please read the notes on dimensioning and installation.
 

Planning example 1

Downdraft with exhaust air: hob connection at the rear, exhaust air at the side
For kitchen units with the front side adjacent to the outer wall.

Download here

Planning example 2

Downdraft with exhaust air: hob connection at the front, exhaust air outlet at the front
For free-standing island solutions with duct routing in the floor structure with COMPAIR STEEL flow^®.

Download here

Planning example 3

Downdraft with exhaust air: hob connection at the side, exhaust air outlet at the side
For kitchen units with the front side adjacent to the outer wall.

Download here

Planning example 4

Downdraft with exhaust air: hob connection at the side, exhaust air outlet at the rear
For kitchen units with the rear side alongside the outer wall.

Download here

Planning example 5

Downdraft with exhaust air: hob connection at the rear, exhaust air outlet at the bottom
For kitchen units with the exhaust air outlet below ground surface level. COMPAIR^® Tower is the exhaust air solution for downdraft extractors when the core hole is below the surface of the ground.

Download here