Postharvest cooling systems are critical for preserving the freshness and quality of harvested crops. These systems rapidly lower the temperature of produce, slowing down respiration rates and microbial activity. Techniques like forced-air cooling, hydro-cooling, and vacuum cooling are tailored to different crop types. Effective cooling minimizes nutrient loss, reduces spoilage, and extends shelf life, ensuring that fruits and vegetables reach markets in optimal condition. By maintaining consistent temperature and humidity levels during transportation and storage, these systems support the supply chain, reduce food waste, and enhance profitability for farmers. Adopting advanced cooling methods is a step towards ensuring food security and sustainability.