Split or monoblock? Buying the right cooling unit for cold rooms & co.

Step by Step to the Right Refrigeration Unit for Cold Rooms, Cold Storage, Refrigeration Chambers & Co.

Those looking to buy a refrigeration unit are often spoiled for choice. The selection is vast, but which refrigeration unit is best? What are the differences between split and monoblock units? Are there differences in how they work? And how are piggyback, plug-in, ceiling-mounted, wall-mounted, and split units installed? We will explain step-by-step in this article which new refrigeration unit you should buy for your cold room and which factors play a role in the purchase.

Step 1: Normal Refrigeration or Deep Freezing?

First, you should ask yourself what purpose the unit should serve. Do you want to cool or deep-freeze your rooms or goods, such as food or beverages? Depending on your needs, a refrigeration unit for normal cooling or a freezing unit is more suitable.

Step 2: Monoblock or Split Unit?

Monoblock units have a compact design. The condenser, compressor, control, and evaporator are firmly connected.

Split units consist of two separate units: an indoor unit and an outdoor unit.

There are several factors to consider:

• How should the unit be mounted?
• What is the wall thickness?
• Will operating noise be disturbing?
• How important is the price?

Monoblock

• Enough indoor space available
• Noise is not an issue
• Wall thickness does not exceed 120 mm
• Price is important

Split Unit

• No space indoors
• Low noise preferred
• Wall thickness over 120 mm
• Price is less important

Monoblock units are divided into piggyback, wall-mounted, ceiling-mounted, and plug-in based on installation type.

Step 3: Mounted on or in the Ceiling or Wall?

There are several ways to install monoblock refrigeration units.

Piggyback Refrigeration Unit for Wall Mounting

The unit hangs on the outside wall while the evaporator remains inside.

Wall-mounted Refrigeration Unit

The unit is inserted through an opening in the wall.

Ceiling-mounted Refrigeration Unit

The unit is inserted through an opening in the ceiling.

Plug-in Refrigeration Unit for Wall or Ceiling Mounting

Plug-in units are docked to an opening in the wall or ceiling.

Step 4: What Cooling Capacity Should the Refrigeration Unit Provide?

The required capacity depends on several factors:

• Desired room temperature
• Insulation quality
• How often the room is opened
• What goods are stored
• Room volume

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