Cold Stores Humidification
High pressure fog humidification keeps humidity at a target set point in order to reduce shrinkage and maintain product weights in refrigerated cold storage environments.

The control of humidity levels at extreme low temperatures presents unique challenges that the MicroCool system is perfectly poised to meet.

Cold stores generally hold large quantities of vegetables and perishable goods, which can deteriorate rapidly in low humidity. The chillers and coolers in these applications “strip” the air of any water, reducing humidity. Fork lift and personnel traffic can also quickly change the humidity level. This water deficit needs to be continually replaced to maintain proper humidity levels.

The amount of water required to raise the humidity level at these low temperatures is extremely small. The MicroCool system uses different stages of nozzles to speed up the recovery process if required.

Case Study

Humidification for Cold Stores, Growers, Produce

Five Crowns Marketing

(add humidity to cold storage refrigeration for produce)

Humidification control reduced moisture loss which maintained product weight and positively impacted the bottom line.


Founded in 1985 and based in California’s heartland with a legacy spanning 65 years, Five Crowns Marketing is a family-based grower, packer, and shipper of fresh fruits and vegetables under their celebrated Majesty Brand label. In addition to their own farming operations, Five Crowns partners with other growers to pack and ship fresh, quality produce to markets all over the U.S.

At the heart of Five Crowns’ packing and shipping operations, Crown Cooling includes a solar-powered, 55,000 square-foot, state-of-the-art cold storage facility located in Brawley, CA. Approximately 5,000,000 units of produce pass through the facility every year.

The Challenge: reduce moisture loss, increase grower profits

The cold storage refrigeration process removes moisture from the air. Under these conditions, asparagus, melons and citrus lose water volume and weight. For produce growers and packers, profits are based on weight and product shrinkage results in lost revenue.


Working with a team of in-house engineers, MicroCool provided a customized, comprehensive humidification analysis including recommendations for stabilizing humidity levels across a multi-zone, humidification network. MicroCool’s solution utilized a system of proprietary IBEX Pumps built to UL standards and exclusive ROC stainless steel line, nozzles and fittings that are corrosion and weld-free. The reverse osmosis water treatment option provides humidification which is free of dissolved mineral salts—essential for food production facilities.

The first humidification system for Five Crowns was installed by MicroCool’s team of professional factory technicians. MicroCool’s focus on continuous innovation simplified the installation process allowing Crown Cooling to add a second system entirely on their own.


The specified integrated IBEX pumps, ROC stainless steel nozzles and Reverse Osmosis system

  • reduced moisture loss
  • maintained humidity to a range of +/- 3% of the target set-point
  • maintained product weight that positively impacted the bottom line


Humidification for Produce, GrowersDownload Five Crowns Marketing Case Study PDF

Fog Humidification Resources

View Directed Humidification video on right, and/or click link to download documentation (in PDF format) below.

For additional information, please contact MicroCool.

MicroCool's Fog Humidification Control

MicroCool Fog Humidification Brochure

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Benefits of High Pressure Fog for Humidification

High Pressure Fog Brochure

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Directed Fog FOCUS Humidification

Directed Humidification Brochure

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Five Crowns Marketing
Case Study

Humidification for Growers, Produce, Melons

Download now