Whether you’re expanding cold storage capacity for a food business, need a temporary solution for a seasonal surge, or are sourcing reliable temperature-controlled transport, a 40ft refrigerated container is one of the most flexible and cost-effective options available. At Conrail, we supply and hire 40ft refrigerated containers across the UK, with fast delivery, transparent pricing, and units suited to virtually any application – from static cold storage to export-ready reefers.
This guide covers everything you need to know before you buy or hire: dimensions, temperature capabilities, power requirements, common uses, and how to choose between purchasing outright or hiring short-term.
What Is a 40ft Refrigerated Container?
A 40ft refrigerated container – often called a “reefer container” – is a steel shipping container fitted with an integrated refrigeration unit, designed to maintain a constant internal temperature regardless of the conditions outside. Unlike a standard dry container, a reefer has insulated walls, a refrigeration motor mounted at one end, and a T-bar aluminium floor that allows cold air to circulate evenly beneath the cargo.
These containers are built to ISO shipping standards, meaning they can move seamlessly between ship, rail and road, but they’re just as commonly used as static, permanent or semi-permanent cold storage on site – no shipping required.
40ft Refrigerated Container Dimensions
While exact internal measurements can vary slightly by manufacturer, a standard 40ft reefer typically offers:
- External length: 12.19m (40ft)
- External width: 2.44m (8ft)
- External height: 2.59m (standard) or 2.89m (high cube)
- Internal capacity: Reduced slightly from a standard dry container to accommodate insulation and the refrigeration unit at the front
- Pallet capacity: Around 20-24 standard or Euro pallets per layer, depending on pallet size and loading configuration
- Payload: Typically in the region of 25-28 tonnes, though this varies by unit and grade
High cube 40ft refrigerated containers add roughly 30cm of extra height, which is useful for bulkier or taller palletised loads, or where maximising internal storage volume is a priority.
Temperature Range and Performance
A well-maintained 40ft refrigerated container can typically hold temperatures from around -30°C up to +30°C (some specialist units go colder still), making them suitable for both chilled and deep-frozen goods within the same fleet. Many units allow precise temperature control to within a fraction of a degree, with digital monitoring so you can verify the internal environment at any time – essential for food safety compliance and pharmaceutical storage.
Power Requirements
40ft refrigerated containers run on a three-phase electricity supply (typically 380-440V) rather than a standard domestic socket. If your site doesn’t already have three-phase power available, you’ll need either an electrician to install a suitable supply or a diesel generator (genset) as an alternative – something Conrail can advise on and arrange as part of your hire or purchase.
Common Uses for a 40ft Refrigerated Container
Businesses across the UK choose 40ft refrigerated containers for a wide range of applications, including:
- Food and drink storage and distribution – meat, fish, dairy, fresh produce and frozen goods
- Overflow or seasonal cold storage – coping with peak demand without committing to a permanent cold room
- Pharmaceutical and medical storage – where strict, verifiable temperature control is a regulatory requirement
- Events and hospitality – temporary catering, festivals and large-scale hospitality operations
- Export and logistics – moving temperature-sensitive goods by road, rail or sea
- Construction and site catering – where mains cold storage isn’t available on site
40ft Refrigerated Container Hire vs For Sale: Which Is Right for You?
Hire is usually the better option when:
- You need cold storage for a short, defined period (a season, an event, a building project)
- You want to avoid the upfront capital cost of purchase
- Your storage needs may change and you want flexibility
Buying is usually the better option when:
- You need a long-term or permanent cold storage solution
- You want full control over the unit and no ongoing hire costs
- You’re happy to manage maintenance and servicing in-house
Conrail offers both new and used 40ft refrigerated containers for sale, as well as flexible hire terms, so you’re not locked into a solution that doesn’t fit your timeline or budget.
Buying a Used 40ft Refrigerated Container: What to Check
If you’re considering a used unit to reduce costs, it’s worth checking:
- Service history and PTI (pre-trip inspection) reports
- Refrigeration unit brand and age (Carrier, Thermo King and Daikin units are among the most common)
- Door seals and insulation condition – poor seals significantly affect efficiency
- Floor condition – the T-bar floor should be free from cracks or heavy wear
- Grade of the container, as this typically reflects both cosmetic and mechanical condition
Conrail’s team can talk you through the grades available and help you match a unit to your budget without compromising on reliability.
Why Choose Conrail for Your 40ft Refrigerated Container
- UK-wide delivery on both hire and sale units
- New and used 40ft refrigerated containers available
- Expert advice on power requirements, siting and access
- Transparent, competitive pricing with no hidden costs
- Fast turnaround for urgent or seasonal requirements
Frequently Asked Questions
How much does a 40ft refrigerated container cost to hire?
Hire costs depend on the length of hire, the condition of the unit, and delivery location. Get in touch with Conrail for a tailored quote based on your requirements.
Can a 40ft refrigerated container run without three-phase power?
Not directly – the refrigeration unit requires a three-phase supply. Where this isn’t available on site, a diesel generator can be used instead.
How long does delivery take?
Delivery timescales vary by location and stock availability. Contact Conrail for current lead times in your area.
What’s the difference between a standard and high cube 40ft reefer?
A high cube unit is roughly 30cm taller, offering additional internal volume – useful for bulkier loads or when maximising storage capacity is a priority.
Do I need planning permission to site a refrigerated container?
This depends on your location, how long the container will be sited, and local authority requirements. We’d recommend checking with your local planning office, particularly for longer-term or permanent installations.
Ready to hire or buy a 40ft refrigerated container? Get in touch with Conrail today for a fast, no-obligation quote.