Roof fans are a simple and effective way of ventilating buildings where the roof is accessible from the space to be ventilated.

Roof fans are available in differing shapes and with different types of fans inside. The two main types of roof fan are horizontal and vertical and this refers to the air pattern of the air when it leaves the roof unit. Horizontal means that the air flow is parallel to the roof surface and is the most popular type of unit. Vertical, or sometimes called vertical jet, is where the airflow is straight upwards from the unit which ideal to disperse smells and fume and prevents a concentration around the outlet. The fan types available in these units are axial and centrifugal. The axial is best for high volumes of air at relatively low pressures and the centrifugal fans are for overcoming high system pressures.

 

Horizontal

units  

Vertical

units  
     
 

RC+HQ.. Axial flow

RD.. Centrifugal

 

VC+HQ.. Axial flow

VD.. Centrifugal

 


                                                 Horizontal units

RC+HQ Axial flow units - combine a fibreglass roof unit with a single or three phase axial plate fan to provide a cost effective solution for applications such as warehouses. Suitable for pitched roofs up to 30 degrees,  further info.1 further info.2

RD.. Centrifugal roof units are compact powerful units providing high pressure performance for ducted system. Suitable for pitched roofs up to 25 degrees. further info.

                                 Vertical units

VC+HQ.. Axial flow 
- combine a fibreglass roof unit with a single or three phase axial plate fan to provide a cost effective solution for applications such as workshops and warehouses where fumes or smells need clearing. further info 1. Further info 2

VD.. Centrifugal - vertical jet roof units are compact powerful units providing high pressure performance for ducted systems for extracting. further info. .                        .