This project transforms a 5-gallon bucket into a high-capacity (up to 4 gallons/day) humidifier with automatic refill capabilities. It utilizes a PID controller, thermocouple, heating element, and fan to regulate water temperature and vapor output, ensuring consistent humidity levels. A toilet fill valve enables automatic water replenishment, making it suitable for applications like crop storage and meat curing. Detailed build instructions and component lists are provided.