The Biolan Wind Ventilator is a durable, high performance metal cowl designed to enhance airflow in composting toilets, dry toilet systems, warehouses, bathrooms, wastewater treatment plants and other sites that require good ventilation.
Using wind power, it creates a natural draft, removing moisture, gases, and odours while maintaining optimal conditions for composting and waste breakdown. By improving ventilation, it helps accelerate decomposition and prevents condensation buildup.
Made from corrosion-resistant metal, this weatherproof ventilator operates without electricity, making it an energy-efficient, low-maintenance solution for off-grid sanitation, outdoor composters, and eco-toilets. Easy to install on standard ventilation pipes, the Biolan Wind Fan ensures continuous airflow, reducing unwanted odours while keeping systems clean and efficient. Throughput is calculated at 100 cubic metres per hour at a wind speed of 5m per second (11 miles per hour).
Ventilation of dry toilets and buildings
Fits 75mm & 110mm pipe
Supplied with a reduction sleeve from 110mm to 75mm
Install vertically
Not suitable for fire flues / chimneys / log burners
See downloads section on this page for installation instructions and dimensions.
Fumes from our septic tank's soil pipe were entering our caravan.The soil pipe originally had a mushroom vent cover that wasn'tgood at dissipating the gases. Since replacing it with the fan the smell has gone. Partly because when there is no wind the gases escape upwards( not downwards from the mushroom vent) through the fan's vanes, and when breezy it actively removes the gases.
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