Frost, ice accumulation, and fog in refrigerated storage facilities are not inevitable — they are symptoms of uncontrolled humidity. When warm, moist air enters a cold store through door openings, conveyor apertures, or ventilation, it condenses on cold surfaces and equipment, creating ice on floors, ceilings, and evaporators. DST desiccant dehumidifiers maintain air in cold stores and loading areas at a dew point below the temperature of all cold surfaces — preventing frost and ice formation entirely, reducing defrost cycles, and creating a safer, more efficient working environment.
Every time a cold store door opens, warm, humid ambient air enters and contacts cold surfaces — condensing rapidly. Conveyor apertures, loading bay doors, and air curtains all create continuous opportunities for moisture ingress. Over time, this moisture builds up as frost on evaporator coils, ice on floors and door frames, and fog that reduces visibility and creates slip hazards for staff.
The consequences are significant: more frequent and lengthy defrost cycles reduce refrigeration efficiency and increase energy costs. Ice on floors creates safety risks. Frosted evaporators lose heat transfer efficiency, forcing refrigeration systems to work harder. Fog at conveyor openings slows production lines during warmer months.
DST dehumidification systems treat the root cause — moisture in the air — rather than the symptoms. By supplying dry air at a dew point below the cold surface temperature, condensation cannot form, ice does not build up, and defrost cycles become dramatically less frequent.
See how DST desiccant systems are deployed in cold stores, freezer rooms, loading bays, and conveyor feed areas. Our solutions eliminate frost and ice formation, reduce defrost frequency, improve floor safety, and lower refrigeration energy consumption — year-round and regardless of outdoor conditions.
DST supplied dry air at -20°C dew point above cold store doors and reduced humidity in the loading bay at Tesco’s Livingston distribution centre in Scotland, eliminating frost and ice at door entry points.
DST installed dehumidification at ASDA’s Washington, Tyne & Wear distribution facility, supplying dry air at -25°C dew point above cold store doors and maintaining 40% RH at 3°C in the loading bay.
DST supplied cold storage dehumidification across 12 Lidl locations in Spain, preventing frost and ice formation and improving working conditions across the retailer’s Spanish cold chain network.
DST has been supplying dehumidification solutions for refrigerated storage environments since the late 1990s — across food distribution centres, supermarket cold chains, ice cream production, pharmaceutical cold storage, and specialist freezer facilities across Europe, Asia, and North America. All systems are configured to the required dew point, cold room temperature, and operational requirements of your facility.
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