Our Hydro-Coolers quickly reduce the core temperature of fresh produce to extend shelf-life.


Wyma Hydro-Coolers quickly reduce the core temperature of fresh produce, extending shelf-life while preserving flavour and appearance.

Water is sprayed over a heat exchanger which is cooled to several degrees below freezing by refrigerant. As the water passes over the heat exchanger, the water cools to a user-set temperature. Cooled water then floods down onto produce (loose or in bins). Water is collected in a tank at the base of the Hydro-Cooler for recycling.

We have designed three types of Hydro-Cooler:

Hydro-Cooler for loose produce: Produce travels by conveyor through the Hydro-Cooler. Produce can be partially or fully submerged in water. An outfeed elevator gently carries produce to the next stage in your line. Suitable for carrots, potatoes, parsnips, etc.

Flow-through Hydro-Cooler for small plastic bins or loose produce: Bins or loose produce travel by conveyor through the Hydro-Cooler. Produce is sprayed with cooled water. This model is commonly used for broccoli, asparagus, cherries, radishes and beetroot (beet).

Flow-through Hydro-Cooler for large plastic bins: Large bins travel by conveyor through the Hydro-Cooler tank. Produce is sprayed with cooled water. This model is great for bulk bin traceability.

For large tonnages, laned Hydro-Coolers are available (up to three lanes) to save space and cost.

At Wyma, we have an in-depth understanding of the post-harvest handling and cooling processes. Dwell time, equipment and refrigeration specifications are tailored to meet your needs.


  • Various models available to suit produce and conveying preferences
  • Rapid cooling of vegetables and fruit significantly enhances shelf-life and maintain quality
  • Integrated refrigeration system customised to suit requirements, with customer-selected refrigerant
  • Shower and immersion cooling prevents produce dehydration, maintaining moisture level and commodity weight
  • Stainless steel tank or upgrade to insulated panels for enhanced thermal efficiency*
  • High quality modular plastic belting for model with out-feed elevator
  • Durable, robust, low maintenance design
  • Continuous water filtration provided by self-cleaning rotary screen filter*
  • Gentle handling with immersed tank and out-feed elevator on model with out-feed elevator*
  • Variable belt speed to control cooling time
  • Inspection hatches to allow easy access for cleaning and maintenance
  • Options to either spray/shower, partially immerse or fully immerse vegetables or fruit to achieve the best results
  • The heat exchanger is mounted to the structure, eliminating the need for additional structure to contain this
  • Easy access for cleaning and maintenance

* Optional

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