A refrigerated truckload, or reefer, is a 53-foot insulated trailer with its own cooling unit that holds a set temperature from pickup to delivery. It carries about 26 pallets and roughly 42,000 to 44,000 lb, slightly less than a dry van because of the insulation and refrigeration unit.
What ships in a reefer
- Fresh and frozen food
- Produce, dairy, meat and seafood
- Beverages and confection that cannot freeze or overheat
- Other temperature-sensitive products that require a set range
Protecting the cold chain
- Give the exact setpoint and whether the unit should run continuous or cycle.
- Pre-cool the product: a reefer holds temperature, it does not bring warm product down quickly.
- Load so air can circulate, and do not block the return air at the front.
- Agree on who records temperatures at pickup and delivery.
Full truck or reefer LTL?
If you have fewer than about 10 pallets, refrigerated LTL can cost far less than a dedicated truck. Above that, a full reefer is usually cheaper per pallet and faster.
| Range | Typical setpoint |
|---|---|
| Frozen | About -10°F to 10°F |
| Chilled | About 32°F to 40°F |
| Protect from freeze or heat | About 45°F to 70°F |
Common questions
How much can a reefer trailer hold?
About 26 standard pallets on the floor and roughly 42,000 to 44,000 lb of freight.
Can a reefer carry dry freight?
Yes. Reefers often haul dry freight with the unit off, and can run heat in winter to protect freight from freezing.
Written by the MeritSpan Logistics team. Last reviewed November 9, 2026. Figures are typical values; equipment and carrier rules vary.