Sioux Falls sits on one of the largest pork and beef processing concentrations in the Midwest, and those plants run continuous ammonia refrigeration that has to stay up around the clock, so the core work here is industrial systems and plant-side upkeep, not scattered light-commercial calls. That ammonia focus means RETA operator credentials and PSM familiarity carry real weight alongside the federally required EPA 608 certification. Statewide, techs, mechanics, and engineers average around $58,000 a year, below the national middle per the state-by-state rankings, though the plant operator roles tend to sit at the top of that range.
Work runs beyond the city itself. Openings also come out of Brandon, Tea, Mitchell, and Watertown, and across the line in Worthington, Minnesota, following the meat plants and cold storage. If you're starting without field time, the realistic route is a helper or apprentice role at a plant or cold storage operator, earn your 608, and build toward the ammonia and operator work.
South Dakota's average across techs, mechanics, and engineers is about $58,000 a year; the industrial ammonia and plant operator roles at the region's meat processors generally pay at the higher end of that range.
South Dakota has no statewide refrigeration license, so requirements are minimal at the state level; EPA 608 is federally required everywhere to handle refrigerants, and the meat plants add their own PSM and operator expectations. Confirm current details in the state-by-state license requirements.
The pork and beef plants run large ammonia systems under PSM regulation, so techs with ammonia and PSM experience or RETA credentials are the strongest candidates for the steady operator and mechanic roles that anchor this market.