CUSTOMER CASEHong Kong

Nestlé Hong Kong Limited Slashed Cold Storage Energy and Costs with ASSA ABLOY RR3000 ISO High-Speed Freezer Doors

2026-07-20

4 min read

Our deployment at the Nestlé Hong Kong Limited (Ice-Cream & Chilled Business) production plant inside the Yuen Long Industrial Estate serves as a proven Case Study in high-performance energy and cost reduction. Operating sub-zero cold rooms under strict temperature requirements, the plant successfully integrated the ASSA ABLOY RR3000 ISO High-Speed Freezer Door alongside its existing traditional sliding doors. This dual-door configuration allowed the facility to drastically cut down cold air loss during high-frequency distribution shifts, resulting in immediate electricity energy savings, lowered compressor strain, and slashed long-term operating costs.

The Solution: Implementing the Ultimate Dual-Door Hybrid Strategy

Instead of forcing facilities to completely scrap their existing layout, adding our high-speed door alongside traditional sliding doors creates the ultimate energy-saving combination:

How It Works: During busy peak hours, the thick, traditional sliding door stays locked open, while the ASSA ABLOY high-speed door handles the non-stop, high-frequency forklift traffic down to -25°C to -34°C, firing open and closed in seconds to trap cold air inside.
During Downtime: When the facility shuts down for the night, on weekends, or during holidays, the traditional insulated sliding door is closed to provide an impenetrable layer of heavy-duty thermal insulation. This setup gives clients the best of both worlds: maximum workflow speed during shifts and absolute thermal sealing during downtime.

Key Functional Highlights

a. Operational Performance & Automation

Ultra-Fast Cycles: Rapid door opening speeds dramatically improve traffic flow for forklifts and personnel, eliminating transit bottlenecks.
Seamless Automation: Engineered for modern logistics, the system easily integrates with advanced warehouse automation systems (WMS) and conveyor networks.

b. Advanced Climate & Energy Control

Maximum Cold Retention: Short opening intervals lock in freezing air, reducing total open-door time windows by more than 70% to stabilize temperatures.
Hygiene Protection: Tight perimeter seals drastically reduce air infiltration, blocking outside dust, contaminants, and ambient humidity.

c. Maintenance, Safety & Long-Term ROI

Frost Suppression: Integrated side-frame heating elements actively prevent ice formation on curtains and tracks, slashing manual cleaning labor.
Active Reversing Safety: Equipped with smart electronic controls and automatic reversing safety sensors to protect passing staff and forklifts.
Faster Payback Asset: While the upfront cost is higher, the sharp reduction in electricity and repair bills delivers a full additional investment payback within approximately 3 years.

Technical & Functional Performance Comparison

Comparison Item	RR300 High-Speed Freezer Door	Traditional Sliding Freezer Door
Opening Speed	Very fast (up to several times faster than conventional doors)	Slow manual or motorized opening
Energy Saving	Excellent – minimizes cold air loss due to short opening time	Higher energy loss due to longer opening periods
Temperature Stability	Maintains freezer temperature effectively	Temperature fluctuates more frequently
Frost & Ice Formation	Significantly reduced	Higher risk of frost and ice accumulation
Productivity	Improves forklift and personnel traffic flow	Traffic bottlenecks may occur
Safety	Equipped with sensors and automatic reversing systems	Limited safety features depending on model
Hygiene	Reduced air infiltration helps maintain clean environment	More outside air enters freezer area
Maintenance	Modern design with reliable operation and lower ice-related maintenance	More maintenance due to ice build-up and door wear
Initial Investment	Higher purchase cost	Lower initial cost
Operating Cost	Lower long-term energy and maintenance costs	Higher long-term operating costs
Automation Integration	Easily integrated with warehouse automation systems	Limited automation capability
Door Opening Frequency	Suitable for high traffic operations	Suitable for low to medium traffic operations

Watch more on YouTube:
https://www.youtube.com/watch?v=3EO-t4lhqbQ

Ready to revolutionize your cold storage efficiency?

If you have any questions or want to request a custom quotation, please contact our Sales Representative, Ken Ng (Ken.Ng@assaabloy.com), directly to learn more about our automatic doors and security entrance control systems.