Introducing the New Colku D40: More Powerful Cooling for Heavy-Duty Trucks

For long-haul truck drivers, staying cool during rest breaks is no longer a luxury — it’s a necessity. As driving routes extend and parking conditions become more demanding, truck air conditioning systems must deliver stronger cooling without increasing energy consumption. This is exactly where the new Colku D40 rooftop air conditioner comes in.

Stronger Cooling Performance, Same High Efficiency

The Colku D40 is designed as a performance upgrade within the D-series lineup. With a 2700W effective cooling capacity, it delivers noticeably stronger and faster cooling than previous models, making it ideal for larger cabins and high-temperature environments. Despite the increased output, the D40 maintains an excellent COP of up to 3.6, ensuring powerful cooling with low power consumption — even during long parking hours.

Advanced Cooling Technology for Real Driving Conditions

At the core of the D40 is a high-efficiency twin-rotor compressor, paired with dual brushless fans to ensure stable, continuous operation. The upgraded electric 3D air distribution system delivers 450 m³/h of uniform airflow, allowing cool air to reach every corner of the cabin more quickly and evenly.

Built for real-world trucking scenarios, the D40 performs reliably across a wide working temperature range from 16°C to 55°C, making it a dependable solution for extreme climates and long-haul routes.

Designed for Easy Installation and Smart Control

The Colku D40 features a standard rooftop mounting design, compatible with common truck vent openings, ensuring straightforward installation with vehicle-specific accessories. For everyday convenience, it offers five intelligent operating modes and supports control via mobile app or remote controller, giving drivers full control over comfort at any time.

A Smarter Choice for Long-Haul Comfort

Whether you’re upgrading from an existing system or choosing a high-performance solution for new vehicles, the Tolk D40 delivers the perfect balance of strong cooling power, energy efficiency, and intelligent control. It’s built to meet the demands of modern trucking — keeping drivers cool, comfortable, and ready for the road ahead.