Complete Buying Guide: How to Choose a Used 20-Foot Refrigerated Container

Why choose a used 20-foot refrigerated container?

The used 20-foot refrigerated container, also called a reefer container, is designed to maintain a controlled temperature, generally from -25 °C to +25 °C. It combines the robustness of a standard shipping container with the performance of a mobile cold room. Buying one is a cost-effective alternative to buying new, while offering a versatile solution for many sectors: food processing, pharmaceuticals, events, and cold chain logistics.

With external dimensions of 6.06 m long, 2.44 m wide, and 2.59 m high, it complies with ISO 668 and can be handled with standard equipment (forklifts, reach stackers, container trucks). Its internal volume of about 28.4 m³ can store around ten European pallets on a single level, or more with suitable racking. Its tare weight of about 2,900 kg remains compatible with most transport vehicles.

Choosing a used refrigerated container also means choosing mobility: once placed on a stabilized surface and connected to a suitable power supply, it is immediately operational. It can be used as a fixed cold room, temporary storage on a construction site, or for transporting goods under controlled temperature.

Technical criteria to check before buying

The refrigeration unit: the heart of the system

The refrigeration unit is the most critical component. On a used 20-foot refrigerated container, it must be tested under real conditions. Check that the compressor works properly, that there is no abnormal noise or excessive vibration, and the condition of the evaporator and condenser fans. A test with temperature readings over several hours confirms that the system holds the setpoint, whether at -25 °C or +25 °C. No refrigerant leak is also essential: a refrigeration technician can check the circuit's tightness and pressure.

The power supply must match your installation: this model runs on 380 V three-phase or 220 V single-phase depending on configuration. Check the unit's power (usually between 3 and 6 kW) and provide a suitable residual current circuit breaker and a cable of sufficient cross-section.

Insulation and sealing

Insulation is provided by polyurethane foam injected into the walls, ceiling, and floor. On a used container, this insulation may have deteriorated. Inspect the door seals: they must be flexible, free of cracks or deformation, and ensure perfect sealing. Worn seals cause air infiltration, higher energy consumption, and poor temperature control. Also check the condition of the interior walls (stainless steel or food-grade aluminum): they must be clean, free of corrosion or deep impact damage.

The floor is another sensitive point. On this type of container, it may be T-profile aluminum or marine plywood covered with non-slip resin. T-floor allows air circulation under pallets, improving temperature uniformity. Make sure it is not rotten, broken, or sagging.

Structure and compliance

The external structure is made of corten steel, resistant to atmospheric corrosion. However, a used container may show perforating rust, major impacts, or deformation on the corner posts. These defects can compromise the container's strength and its compliance for transport. Check the CSC plate (Convention for Safe Containers): it certifies the container's suitability for handling and stacking. If the container is intended for transporting perishable goods under controlled temperature, ATP certification is often required. It must be valid.

For fixed use as a cold room, the CSC plate is not mandatory, but it remains a quality guarantee. In France, using a refrigerated container to store animal products may require a declaration to veterinary services. Check with your local DDPP.

Uses of a used 20-foot refrigerated container

In food processing

The 20-foot refrigerated container is commonly used to store fruits and vegetables (0 to 8 °C depending on variety), dairy products, meat (around 0 °C), seafood, or frozen goods (-18 °C or lower). Its wide temperature range adapts to each type of food. For catering professionals or caterers, it is an ideal mobile cold storage for deliveries or events.

Florists and horticulturists also benefit: it keeps cut flowers at 2 to 5 °C with good humidity. In the chemical or cosmetics industry, it can store heat-sensitive products, provided the interior materials are compatible.

In the pharmaceutical and healthcare sector

Transporting and storing medicines, vaccines, or biological samples requires controlled and tracked temperature. A used refrigerated container can meet this need, subject to compliance with sector-specific regulations (good distribution practices, temperature recording). Adding an autonomous temperature logger is often necessary to track readings.

For events and construction sites

Festivals, construction sites, base camps: the used 20-foot refrigerated container provides temporary, mobile cold storage. It can be rented for a few days or several months, avoiding a heavy investment. Rental usually includes maintenance and repairs, securing operations.

Comparison with other cold storage solutions

The used 20-foot refrigerated container is a good compromise between the dry container, cheaper but without temperature control, and the fixed cold room in sandwich panels, better insulated but immobile and requiring construction work. The 40-foot refrigerated container offers double the volume (about 67 m³) and can hold up to 20 to 22 pallets, but it is bulkier and heavier. The 10-foot refrigerated container, rarer, suits small spaces. The high cube reefer (9'6" high) offers greater internal volume but is less common used.

The used refrigerated container therefore offers an excellent cost/mobility/performance ratio, provided its condition is carefully checked.

Regulations and applicable standards

A refrigerated container used for international transport must meet ISO 668 and ISO 1496-1 standards and have a valid CSC plate. For transporting perishable goods under controlled temperature, the ATP agreement sets insulation and performance standards. A valid ATP certificate is required for road transport of perishable goods. It must be renewed periodically (usually every 6 years for new units, then according to the certifying body's procedures).

In France, installing a fixed refrigerated container may be subject to planning rules: a container placed on the ground may be considered a construction. Check with your town hall. The electrical connection must be made in accordance with NF C 15-100 by a qualified professional. Finally, if you store animal products, a declaration to veterinary services may be required.

Installation and maintenance of a used refrigerated container

Prepare the ground and power supply

The ground must be level and stabilized: a concrete slab or compacted gravel bed is recommended to prevent deformation. Allow space around the refrigeration unit for access and ventilation. The power supply must be protected by a residual current circuit breaker suited to the unit's power. Outdoors, a canopy protecting the refrigeration unit from sun and weather improves its efficiency and lifespan.

Secure access if you store valuable goods: a padlock on the door locks is a minimum.

Routine care and preventive maintenance

Clean the interior regularly with food-safe products, avoiding high-pressure water jets on the refrigeration unit. Periodically dust the filters and heat exchangers of the refrigeration unit to prevent dirt from reducing efficiency. Check and clean door seals to prevent air leaks. An annual check by a refrigeration technician is recommended to verify the refrigerant circuit's tightness, pressure, and proper operation of control components.

Wear parts to monitor include the compressor, fans, door seals, contactors, and temperature sensors. Filter driers must be changed according to the manufacturer's recommendations. A well-kept maintenance log helps track service history. For high-value products, a maintenance contract with a qualified refrigeration technician is strongly advised.

Prepare the container before loading

Pre-cool the container to the setpoint temperature before placing goods inside, especially if they are already cold. This avoids overloading the refrigeration unit and limits temperature variations. Palletize products and space them to allow cold air circulation. Do not block evaporators or ventilation grilles. Load quickly to avoid breaking the cold chain. Once doors are closed, check that seals are clean and locks are properly engaged. For long transports, use an autonomous temperature logger to verify cold chain compliance on arrival.

Energy consumption and optimization

A 20-foot refrigerated container consumes on average between 3 and 8 kWh depending on outside temperature, setpoint temperature, and insulation condition. In summer, consumption can increase. Check the condition of seals and insulation to limit costs. Regular maintenance keeps consumption at the lower end. Using a programmable thermostat or a monitoring system can help optimize cycles. For sensitive installations, a temperature logger tracks readings, often required in the pharmaceutical or food sector.

Rental or purchase: which option to choose?

Buying a used 20-foot refrigerated container represents an initial investment, but it quickly becomes profitable if you have a regular or permanent need. Rental, on the other hand, avoids tying up cash and usually includes maintenance and repairs. It is particularly suited to seasonal or one-off needs (events, construction sites). To test equipment before buying, rental can be a wise first step. Our team can help you determine the most suitable option based on duration, installation location, and electrical constraints.

Checklist before buying a used 20-foot refrigerated container

• Refrigeration unit: tested under real conditions, no leaks, compressor and fans in good condition.
• Insulation: flexible, sealed door seals, sound interior walls, floor without deformation.
• Structure: no perforating rust, major impacts, or deformation on corner posts.
• Documents: valid CSC plate, ATP certificate if needed, invoice and transfer certificate.
• Power supply: compatibility with your installation (380 V or 220 V), unit power.
• Installation: stabilized ground, space around the refrigeration unit, weather protection.
• Maintenance: maintenance log, possible maintenance contract.

By following this checklist, you maximize your chances of acquiring a reliable used refrigerated container suited to your needs. Do not hesitate to ask for detailed photos, a functional test, or a site visit before committing.

How to assess the price of a used 20-foot refrigerated container

The price of a used 20-foot refrigerated container varies based on several factors: the unit's age, the condition of the refrigeration unit, the brand of the unit (Carrier, Thermo King, Daikin, Star Cool, etc.), the presence of a valid ATP certification, and the general condition of the structure. A recent, serviced, ready-to-use container will naturally be in a higher range than an older unit needing repairs. As a guide, a used 20-foot refrigerated container in good working condition generally sells for between €3,500 and €7,000 in Europe, excluding transport and any compliance work.

The listed price for this model is €4,140 excluding VAT, which corresponds to a mid-range positioning for a tested, serviced unit delivered with a leak-tightness certificate. Before comparing offers, always ask for: the date of the last refrigeration unit service, the service history, whether an ATP certificate is present, and detailed photos of the floor, seals, and unit. A container sold without a prior functional test should be considered with caution, even at an attractive price.

Remember to include additional costs in your budget: transport to the site (varies by distance and accessibility), possible crane fees for unloading, electrical connection by a qualified electrician, and if applicable, interior fit-out (racks, shelves, ramp). These items can represent several hundred to several thousand euros depending on the configuration.

Common mistakes to avoid when buying

Focusing only on price

A too-cheap used refrigerated container often hides a problem: refrigeration unit at the end of its life, refrigerant leak, degraded insulation, or corroded structure. The cost of refurbishment can quickly exceed the price difference with a unit in good condition. Always favor a seller able to provide a functional test and a maintenance history.

Neglecting electrical compatibility

A refrigerated container can run on 380 V three-phase or 220 V single-phase. If your site only has a single-phase supply and the container is three-phase, compliance work will be necessary. Check this before buying, as well as the available power on your electrical panel.

Underestimating installation constraints

A refrigerated container weighs nearly 3 tonnes empty and can exceed 30 tonnes when loaded. The ground must be able to support this load without settling. Also, access for the delivery truck and unloading crane must be prepared. Anticipate these logistical aspects to avoid unexpected costs.

Forgetting temperature traceability

In regulated sectors (food, pharmaceutical), temperature traceability is often mandatory. A simple thermostat is not enough: an autonomous temperature logger or monitoring system is needed. Plan for this equipment from the start if your activity requires it.

Adapting the container to your specific activity

For catering and food businesses

A used 20-foot refrigerated container can serve as a positive or negative cold room for a restaurant, butcher, fishmonger, or caterer. It stores perishable goods under optimal conditions while freeing up space in the main premises. Plan a suitable interior fit-out: stainless steel shelves, rails for hanging carcasses, or pallets for packaged products.

For events and festivals

At temporary events, the used 20-foot refrigerated container provides mobile, secure refrigerated storage capacity. It can be installed in a few hours on stabilized ground and connected to a generator if mains power is unavailable. Its versatility handles both cold drinks and perishable food for catering.

For industry and logistics

In a warehouse or logistics platform, the used 20-foot refrigerated container can serve as a buffer zone for temperature-sensitive products awaiting shipment or quality control. Its ISO standardization facilitates integration into existing flows and transport by truck, train, or ship.

Conclusion: choosing well means securing your investment

The used 20-foot refrigerated container is a versatile, robust, and economical piece of equipment that meets many controlled cold storage needs. However, buying one must be accompanied by rigorous technical verification and regular maintenance to ensure long-term reliability. By following the criteria detailed in this guide — refrigeration unit condition, insulation, structure, regulatory compliance, installation, and maintenance — you maximize your chances of acquiring a high-performing, durable unit.

Our team based in Marseille is available to advise you on the model best suited to your activity, provide detailed photos, arrange a site visit or functional test, and assist you with transport and installation. Whether you are a food professional, a healthcare provider, an event organizer, or an industrial operator, the used 20-foot refrigerated container is a controlled cold storage solution that is mobile, standardized, and economically sound.