Scalable for small and mid-sized farm operations, portable farm market-type display units have dual benefits of big visual impact with quality enhancing cooling, extending fresh fruit and vegetable shelf life. For those with basic carpentry skills, converting a utility trailer into an insulated cooler box is a relatively easy project. Reasonably priced, these units add versatility boosting the “farm’s capacity to grow, and support their bottom line and sustainability.”
Utility Trailer to Mobile Market Cooler
While this project used a new 6’ x 12’ utility box trailer, others have cut costs for similar projects substituting used trailers, transportable boxes, or built-in units. The cooler unit is a standard household window air conditioning unit with a CoolBot controller that overrides the AC units thermostat, tricking it to keep it running well below household temperature ranges. The AC mobile market cooler in this conversion is adapted from instructions for a smaller Pack-n-Cool unit created by Dr. Penelope Perkins-Veazie, NCSU. See Pack-n-Cool Construction Summary to read about her experiences.