Extractor Fan Ducting

Do Extractor Fans Need to Vent Outside?

Extractor fans should ideally vent outside to effectively remove heat, humidity, and odours from your grow space. Venting inside can cause humidity buildup, heat retention, and unpleasant odours, which can negatively impact plant health. Proper ventilation ensures that the air within the grow environment remains fresh, promoting optimal growth conditions.

Can You Use One Duct for Two Extractor Fans?

Yes, you can use a single duct for two extractor fans, but it requires careful planning. Ensure the extractor fan ducting is large enough to handle the combined airflow of both fans without causing pressure drops. A Y-junction with backdraft dampers is essential to prevent air from one fan pushing back into the other system, which could compromise efficiency.

How to Attach Ducting to an Extractor Fan

Attaching ducting to an extractor fan is straightforward. Ensure the extractor ducting size matches the fan outlet. Secure the ducting with duct clamps or fast clamps, and wrap the connection with duct tape to prevent air leaks. If using insulated extractor ducting, ensure that the insulation is secure and covers the joint completely to maintain airflow temperature and efficiency.

How to Insulate Extractor Fan Ducting

Insulating your extractor fan ducting is very helpful in maintaining temperature control and reducing noise. Use insulated extractor ducting, which comes pre-lined with soundproofing and thermal insulation. For non-insulated ducts, wrap the ducting with insulation material, ensuring there are no gaps. Proper insulation helps to maintain a stable environment within your grow space and minimizes noise from the air movement through the fan extractor pipe.