Costs involved to run a Walk in Cold Room
Walk-in cold rooms, including both chillers and freezers, are essential for many businesses such as restaurants, supermarkets, butchers, florists, and food production facilities. They provide reliable storage for temperature-sensitive goods while helping businesses manage stock efficiently.
One of the key considerations when investing in a cold room is the ongoing running cost. Understanding what affects energy usage can help businesses budget more accurately and identify areas where savings can be made.
Factors That Affect Running Costs
Size of the Cold Room
Larger cold rooms require more energy to cool and maintain temperature, as there is a greater internal volume to regulate.
Insulation Quality
High-quality insulated panels reduce heat transfer, meaning the refrigeration system works less to maintain the set temperature.
Temperature Setting
Chillers usually operate between +2°C and +8°C, while freezers commonly run at -18°C or below. Lower temperatures require more energy, so freezers generally cost more to run than chillers.
Usage Patterns
Frequent door openings allow warm air to enter, forcing the system to work harder to restore temperature.
Ambient Temperature
Cold rooms installed in hot kitchens, warm storerooms, or direct sunlight will consume more energy than those in cooler environments.
Age & Efficiency of Refrigeration Unit
Modern refrigeration systems are typically more efficient than older units and can significantly reduce operating costs.
Calculating Running Costs
Electricity consumption is measured in kilowatt-hours (kWh). Running costs vary depending on room size, usage, and temperature.
Typical Daily Consumption
- Walk-in Chiller: 8–20 kWh per day
- Walk-in Freezer: 15–40 kWh per day
Assuming a commercial electricity rate of £0.12 per kWh:
Example – Medium Walk-In Chiller
- Daily Cost: 12 kWh × £0.12 = £1.44/day
- Monthly Cost: £43.20/month
- Annual Cost: £525.60/year
Example – Medium Walk-In Freezer
- Daily Cost: 25 kWh × £0.12 = £3.00/day
- Monthly Cost: £90/month
- Annual Cost: £1,095/year
How to Reduce Running Costs
Regular Maintenance
Keep condenser coils clean, check door seals, and ensure evaporators are operating correctly.
Upgrade Refrigeration Systems
Modern monoblock and split systems can be far more energy efficient than older equipment.
Improve Insulation
Well-fitted insulated panels and quality doors reduce energy loss.
Optimise Door Usage
Reduce unnecessary openings and consider strip curtains for busy environments.
Use Temperature Monitoring
Digital controls and monitoring systems help maintain efficient operating temperatures.
Correct Room Sizing
An oversized or undersized cold room can waste energy. Choosing the right size for your operation is key.
Conclusion
The cost of running a walk-in cold room depends on whether it is a chiller or freezer, along with size, usage, and efficiency. A medium-sized chiller may cost around £500–£800 per year, while a comparable freezer may cost £1,000–£1,500+ per year.
By investing in quality insulation, efficient refrigeration, and sensible day-to-day operation, businesses can significantly reduce running costs while protecting stock and maintaining food safety.
If you’re considering a new walk-in chiller or freezer, choosing the right specification from the start can make a major difference in long-term costs.