Having a coolroom is almost like having a walk-in freezer at the back of your truck. You can keep all your drinks and food fresh while on the move. A coolroom is ideal for restaurants and other food-based businesses that conduct on-site catering. Coolroom hire is a convenient alternative to buying the equipment. This piece discusses some benefits of hiring a coolroom. Mobile The most important perk of having a coolroom is the flexibility it accords the user.