Refrigeration jobs in Maryland cover commercial service, cold chain facilities and industrial refrigeration tied to poultry, spice and food production, cold storage and distribution. Key hiring areas include Baltimore, Hagerstown, Salisbury, Frederick and Gaithersburg. Employers such as Perdue Farms, McCormick, Sysco and Lineage help define the local market for refrigeration techs and operators. EPA 608 is often expected for refrigerant work; RETA CARO or CIRO can matter for ammonia refrigeration jobs. Pay depends on shift, credential level and facility complexity. Search refrigeration maintenance jobs in Maryland.