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Mechanical Exhaust Air Ventilation

For one storey or two storey houses

Mechanical Exhaust Air Ventilation

Mechanical exhaust air ventilation is just that. Air is sucked out of the home using fans and outdoor air is taken in through slot ventilators in the window frames. Warm used air is sucked out through exhaust air vents in wet rooms and through the kitchen extractor.

These exhaust air vents are connected by a ducting system from which the air is expelled through a roof cowl using an exhaust air fan.

The disadvantage is that outdoor air is untreated when it is taken in and this causes cold draughts in the home when it is cold outside. This often leads to the outdoor air vents being closed and never reopened which results in the ventilation system ceasing to work. Also the outdoor air is not filtered when it comes into the home and so the quality of air in the home is affected.


 

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Living space of a maximum 170 m2
One storey/Two storey house

For improving the ventilation in houses with a maximum living space of 170 m2 with natural ventilation systems the Exonet system is recommended. The Exonet system is a mechanical exhaust air system consisting of the JBDD exhaust air fan and cooker hood.

 

Living space of maximum 250 m2
One storey/Two storey house

For improving the ventilation in houses with a maximum living space of 250 m2 with natural ventilation systems a system with a roof mounted exhaust air fan is recommended. This system consists of the JBFG roof fan and cooker hood.

 

Living space of a maximum 370 m2
One storey/Two storey house

For improving the ventilation in houses with a maximum living space of 370 m2 with natural ventilation systems a system with a roof mounted exhaust air fan is recommended. This system consists of the STEF roof fan and cooker hood.