A Practical Guide for Chiller & Freezer Rooms
Choosing the right cold room size is one of the most important decisions in any refrigeration project. A room that is too small limits your operation, while a room that is too large increases equipment cost, power consumption, and running expenses.
This guide explains how to choose the correct cold room size, step by step, in a practical way.
The first question is what product you will store, because different products require different space and airflow.
Examples:
Fruits & vegetables → need airflow space
Meat & fish → need hanging or boxed storage
Dairy & beverages → usually pallet or shelving storage
Frozen products → require more insulation and power
👉 Rule: Never size a cold room only by volume. Always consider the product type.
You need to estimate:
Daily intake (how much product enters per day)
Maximum storage (peak season capacity)
For example:
500–700 kg small shop
1–3 tons medium business
5+ tons industrial storage
👉 Important: Always add 20–30% extra space for:
Air circulation
Future growth
Easier loading/unloading
Use this simple formula:
Volume (m³) = Length × Width × Height
Example:
Length: 5.0 m
Width: 3.0 m
Height: 2.2 m
Volume = 5 × 3 × 2.2 = 33 m³
This gives you the internal usable space, which is the base for:
compressor sizing
evaporator selection
panel thickness
Cold room size selection depends heavily on temperature:
Temperature: 0°C to +5°C
Lower power demand
Smaller compressor possible
Typical panel thickness: 75–100 mm
Temperature: -18°C to -25°C
Higher power demand
Larger compressor required
Thicker panels needed: 100–150 mm
👉 A freezer of the same size always costs more than a chiller.
If the cold room is:
Indoor → standard design
Outdoor → needs:
weather protection
roof or canopy
higher ambient temperature allowance
Hot climates or outdoor locations may require:
larger condenser
higher HP
stronger insulation
Many clients make the mistake of sizing only for today.
Ask yourself:
Will my business grow in 1–2 years?
Will storage volume increase?
Will I change from chiller to freezer later?
👉 It’s often cheaper to build slightly larger now than rebuild later.
Once the size is confirmed, equipment must match:
Compressor HP
Evaporator capacity
Panel thickness
Control system
An incorrectly sized room leads to:
short compressor life
high electricity bills
unstable temperature
❌ Choosing size based only on price
❌ No allowance for airflow
❌ Ignoring future growth
❌ Using chiller design for freezer use
❌ Not considering ambient temperature
There is no one-size-fits-all cold room.
The right cold room size depends on:
product type
storage quantity
temperature requirement
location and climate
future plans
👉 Always confirm the size with a refrigeration specialist before ordering equipment.
We help clients design chiller and freezer rooms with:
correct sizing
suitable equipment
energy-efficient solutions
📩 Contact us anytime for professional advice.
freezing valley refrigeration equipment
Contact Email: info@freezingvalley.com
