Refrigerated shipping containers, often referred to as reefer containers, are designed to store and transport temperature-sensitive goods in a controlled environment. They are widely used across the UK by businesses handling food, pharmaceuticals, chemicals, and other perishable products.
If your business relies on cold storage, understanding how refrigerated containers work and which type is right for your needs is essential before you buy or hire.
What Is a Reefer Container?
A reefer container is a shipping container fitted with an integrated refrigeration unit that maintains a consistent internal temperature regardless of external conditions.
Reefer containers are commonly used for:
- Fruit and vegetables
- Meat, fish, and dairy products
- Pharmaceuticals and medical supplies
- Catering and event cold storage
Modern units can be configured for both chilled and frozen storage, making them a flexible solution for short-term or long-term use.
For buyers comparing options, our range of refrigerated shipping containers for sale in the UK covers multiple sizes and specifications to suit different industries.
How Do Refrigerated Shipping Containers Work?
Reefer containers use a built-in refrigeration system powered by an external electrical supply. When used in transit, they can also operate via a generator set.
Unlike standard containers, reefers are designed to maintain temperature, not rapidly cool warm goods. Products should always be pre-cooled before loading to ensure stable internal conditions.
Key design features include:
- Insulated walls, floor, and ceiling
- A specialised “T-floor” that allows cold air to circulate evenly
- Digital temperature control and monitoring systems
These features ensure consistent airflow and reduce the risk of spoilage during storage or transport.
Temperature Range and Control
Most standard refrigerated containers operate within a temperature range of -25°C to +25°C, suitable for the majority of chilled and frozen goods. Specialist freezer units can operate at much lower temperatures if required.
Temperature stability is critical for protecting product quality and meeting food safety and pharmaceutical compliance standards.
Maintenance and Reliability
Proper maintenance is essential to keep a reefer container operating efficiently. Routine checks help prevent breakdowns and protect valuable stock.
Key maintenance considerations include:
- Keeping interiors clean and odour-free
- Regular inspection of seals and door gaskets
- Ensuring the refrigeration unit is serviced by a qualified engineer
Buyers often ask whether reefer units are fully sealed. If this is a concern, it’s worth understanding are refrigerated containers fully waterproof and how insulation and sealing work together.
Buying vs Hiring Refrigerated Containers
Whether you should buy or hire depends on how frequently you need cold storage.
Buying a Reefer Container
- Best for long-term or continuous use
- No ongoing hire costs
- Full control over availability
For example, many businesses opt for 20ft used ex-marine refrigerated containers as a cost-effective long-term solution.
Hiring a Reefer Container
- Ideal for short-term or seasonal demand
- Lower upfront cost
- Maintenance often included
Both options are viable, but understanding lifespan helps with budgeting. You can learn more about how long refrigerated shipping containers last before deciding.
Common Uses for Refrigerated Containers in the UK
Reefer containers are widely used across multiple sectors, including:
- Food production and distribution
- Supermarkets and retail overflow storage
- Events, festivals, and catering operations
- Construction and remote sites needing mobile cold storage
Their durability and flexibility make them a practical alternative to permanent cold rooms.
Choosing the Right Refrigerated Container
When selecting a reefer container, consider:
- Required temperature range
- Container size and available space
- Power supply access
- Length of use (short-term vs long-term)
Choosing the right specification from the outset reduces running costs and avoids operational issues later.
Final Thoughts
Refrigerated shipping containers play a vital role in protecting temperature-sensitive goods across the UK. With the right preparation and specification, they offer a reliable, scalable cold storage solution for businesses of all sizes.
If you are planning to invest in cold storage, explore our full range of refrigerated shipping containers for sale in the UK to find the right unit for your operation.
