Engineers Without Borders Smoke-Free Homes, in partnership with Rotary East Guatemala, aims to address the critical health, economic, and environmental issues caused by open-fire cooking in rural Guatemala. Open-fire stoves emit smoke equivalent to 400 cigarettes per hour, leading to respiratory infections, eye damage, and heart and lung disease, especially impacting women and children under five. These stoves also contribute to Guatemala’s high deforestation rates, as they require significant firewood. Our engineered solution, the “eco-stove,” is a smoke-reducing, firewood-efficient stove constructed with cinder blocks, bricks, and galvanized steel tubing. By enhancing combustion efficiency, cutting emissions, and adapting to community feedback, we aim to create a safer, more sustainable household cooking environment. Additionally, our venture seeks to establish a sustainable business model, providing access to eco-stoves and raising global awareness about clean cooking.