Extractor Fans

Calm Extractor Fans - Page 8

Continually Running Extractor Fans - Page 10

Bathroom Fans - Page 12

Purge Ventilation & Acoustic In-line Fans - Page 14

In-Line Fans - Page 16

Extractor Fan Controls - Page 18

Blauberg Zone 1 Calm Range

Zone 1 Bathroom Fans Explained

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Extractor Fans

Calm Extractor Fans

Continually Running Extractor fans:

• Comprehensive range of continually running extractor fans for bathrooms, kitchens, wet rooms and utility rooms.

• Stylish designs in contemporary colours.

• Constant trickle operation at low speed with humidity boost and timer options.

Fitted with highly efficient German low energy motors.

• Low running costs.

Changes to building regulations for dMEV extractor fans

In 2022 updates to Building Regulations outlined the importance of a particular type of ventilation: continually running extractor fans.

Continually running extractor fans, commonly known as dMEV, work the same as conventional extractors but run constantly at a low speed.

Typically a dMEV fan for a toilet has an extract rate of 6 l/s whereas a traditional fan would be 15 to 20 l/s. The lower continual airflow provides a higher overall rate of extraction with lower noise levels.

dMEV fans also have a boost option, the boost speed offers higher rates of air extraction when a room is occupied or when humidity levels are high.

The air permeability of a building is also a contributing factor when selecting extractor fans. If your home is fairly airtight (an air permeability of 5 m3/hr/m2 @ 50 Pa or lower) you now must use a continually running extractor fan to meet Building Regulations.

In addition, sufficient background ventilation is required to ensure fresh air can enter the room. This can be trickle vents in windows or additional passive vents installed within the room.