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Intermittent Extract Fans
A breath of fresh air
Classic on and off ventilation for all rooms and applications including SMART humidity and timer control options
What is intermittent extract and how does it work?
Intermittent Extract is a classic method of ventilation and identified as System 1 in the Building Regulations. The provision of ON-OFF ventilation through 'in room' extractorfans - bathrooms, kitchens WC's etc and background ventilators located in windows and walls.
System 1 is recognised as Energy Neutral in SAP, however Guaranteed Installed Performance is high on the agenda with this type of system and onsite testing is increasing.
Building Regulation Requirements ADF : 2010
The Building Regulations ADF:2010 set out the requirements for intermittent ventilation are detailed in the table below.
They are based on aiflow performance requirements for specific room types:
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