Over 70% of Bangladesh’s population lives in corrugated tin huts across the countryside. During the long summer months, temperatures reach up to 45° Celsius, making these huts unbearable to live in. To address the issue, Grey Dhaka designed the Eco-Cooler – the world’s first-ever zero electricity air cooler, which uses re-purposed plastic bottles cut in half and put into a grid, in accordance to available window sizes. Based on wind direction and airflow pressure, the Eco-Cooler has succeeded in decreasing the temperature in tin huts.
After initial tests, blueprints of the Eco-Cooler were put up online for everyone to download for free. Raw materials are easily available, therefore, making Eco-Coolers a cost-effective and environmentally friendly solution. Eco-Coolers have been installed in villages in Nilphamari, Daulatdia, Paturia, Modonhati and Khaleya across Bangladesh.