What Factors Affect Onion Cold Storage?
Onion storage success depends on a few factors that influence quality and shelf life.
- Temperature Consistency– Stable cooling stops sprouting, decay, and premature spoilage.
- Humidity Regulation– Maintaining balanced moisture levels helps minimize weight loss and preserve firmness.
- Airflow & Ventilation– Proper air circulation prevents hotspots and helps maintain a consistent temperature throughout the storage space.
- Energy Efficiency– A good working system lowers running costs and maintains reliable performance.
- Storage Infrastructure– Well-insulated panels and durable construction ensure long-term protection and reliability.
What is the Right Temperature for Onion Cold Storage?
The recommended temperature for storing onions is 0–2 °C (32–36 °F).
Here, onions remain firm, with no sprouting, and shelf life is also extended for several months. Going beyond this increases the risk of decay, and temperatures lower than this can cause chilling injury.
What is the Right Humidity for Onion Cold Storage?
Onions store best at a relative humidity of 60–70%. This range reduces shrinkage and curbs decay, which are two key factors that impact shelf life in commercial operations.
Onion Cold Storage Equipment
- Onion Cold Storage Solution
- Onion Cold Storage Equipment PDF
Get more solutions for commercial cold rooms and walk-in coolers.
| Temperature and humidity of Onion Cold Storage | |||
| Temperature | 0~3℃ | Humidity | 60%~85% |
| Onion Cold Storage with Air Cooled Condensing Unit | |||
| Temperature range | Refrigerant | Capacity | |
| With Bitzer Compressor | -25℃~+5℃ | R22,R404A | 5.8-148.5KW |
| Onion Cold Storage with Cubic Air Cooling Evaporator | |||
| Cooling area | Air Flow | Capacity | |
| ZLH series | 10-580㎡ | 1*3100-3*16200m³/h | 2-11.6KW |
Related Reading
Onion Cold Storage Project Cost
Setting up an onion cold storage facility can cost approximately USD 750,000 to USD 800,000(cold storage volume 1000m³, Length, width, and height 18*9*6).
This estimate covers building construction, insulation, refrigeration machinery, electrical works, and other essential add-ons.
Check more price of a cold room.