Refrigerated containers and blast freezer containers look similar from the outside and do very different jobs. A reefer is designed to hold product at a set temperature. A blast freezer is designed to pull temperature down quickly. Buying one when you needed the other is a costly error, so it is worth being clear about which problem you are solving.
Refrigerated containers (reefers)
A reefer is an insulated container with an integral refrigeration unit, built to maintain a stable set point once product is already at temperature. Air is circulated through a T-bar floor and around the load to keep conditions even from end to end.
Typical uses are chilled and frozen storage overflow, seasonal capacity, on-site cold storage for food production, pharmaceutical and floral stock, and temperature-controlled staging at events and remote sites. Dual-temperature and dual-end units split the box into separate zones, which is useful when you need chilled and frozen in one footprint.
Blast freezer containers
A blast freezer has substantially more refrigeration capacity and much higher air velocity than a reefer of the same size. That combination is what drives heat out of product fast, rather than simply holding it. Fast freezing matters because it produces smaller ice crystals, which preserves texture and reduces drip loss on thawing.
You need a blast freezer if you are freezing fresh product yourself — a processor, a fishery, a bakery, a meat operation. You do not need one if you are receiving product that is already frozen and simply keeping it that way.
Power is the constraint people forget
Refrigerated units are the most demanding equipment we supply in terms of electrical supply. Blast freezers in particular draw heavily and commonly require a three-phase supply. Before you commit to a unit, confirm the voltage, phase and amperage available at the position where it will sit, and check whether you need an electrician to provide a suitable feed.
- Confirm single-phase versus three-phase availability at the exact placement point.
- Check the voltage and breaker rating against the specification on the listing.
- Plan for a generator if the site has no suitable permanent supply.
- Allow airflow clearance around the machinery end of the container.
Condition matters more than usual
On a dry storage container, cosmetic wear is largely irrelevant. On a refrigerated unit it is not: insulation integrity, door seal condition and the service history of the machinery determine whether the unit holds temperature efficiently or runs constantly. The same grading principles apply, but the machinery condition is the part worth asking about.
What we stock
Our refrigerated container range covers 20ft and 40ft reefers, dual-temperature and dual-end units, and blast freezer containers. Each listing states the temperature range and electrical requirement — do not assume, read them. Larger machinery-equipped units also appear in the 40ft range.
Delivery is a flat $450 per order from our Greenville, Texas depot and payment is by bank wire or ACH transfer; see the shipping policy and payment policy for the detail. To check whether a specific unit suits your load and your power supply, call +1 430 280 1063 or email info@marinercontainers.com.
