Colku D40: High-Efficiency 24V DC Rooftop Air Conditioner for Heavy-Duty Trucks

For long-haul trucking and high-temperature parking environments, a reliable cooling system must deliver strong performance, low energy consumption, and stable operation. The Tolk D40 is a high-performance 24V DC rooftop air conditioner for trucks, designed to meet the demands of heavy-duty applications where driver comfort and battery efficiency are critical.

Why 24V DC Rooftop Air Conditioners Matter for Truck Parking

During rest periods and overnight parking, traditional engine-driven air conditioning systems are inefficient and fuel-consuming. This is why a DC truck parking air conditioner has become an essential solution for modern fleets.
A well-designed energy-saving truck air conditioner allows drivers to maintain a comfortable cabin temperature while reducing battery load and operating costs.

As an advanced rooftop air conditioner for heavy-duty trucks, the Colku D40 is optimized for long parking hours and extreme heat conditions.

Powerful 2700W Cooling with Outstanding COP 3.6

The Colku D40 delivers an impressive 2700W effective cooling capacity, providing stronger and faster cooling than previous-generation models such as the D26. Despite the increased output, it maintains an excellent COP of up to 3.6, ensuring powerful cooling without sacrificing energy efficiency.

This balance makes the D40 a dependable 24V DC truck air conditioner for large cabins and high-temperature environments.

👉 Learn more on the Colku D40 rooftop air conditioner product page.

Twin-Rotor Technology and 3D Air Distribution

At the core of the Colku D40 is a twin-rotor compressor, combined with dual brushless fans to ensure rapid, stable, and long-lasting cooling under continuous operation. This configuration improves reliability and performance, even during extended use.

The electric 3D air distribution system delivers 450 m³/h of uniform airflow, accelerating cabin temperature reduction and eliminating uneven cooling. This makes the D40 a highly effective truck rooftop AC system for demanding operating conditions.

Built for Long-Haul and High-Temperature Operation

The Colku D40 is designed specifically for heavy-duty and long-haul trucks, where cooling systems must perform reliably during extended parking and in extreme climates. Its professional rooftop installation design ensures compatibility with standard truck mounting solutions, simplifying installation and maintenance.

Smart Control for Driver Convenience

To enhance everyday usability, the D40 features five intelligent operating modes and supports control via mobile APP or remote controller. Drivers can easily adjust temperature and operating settings to suit different parking and driving scenarios.

👉 Explore more solutions in our 24V DC rooftop air conditioners for trucks.

A Reliable Cooling Solution for Modern Trucking

By combining 2700W cooling performance, high COP 3.6 efficiency, twin-rotor technology, and smart control, the Tolk D40 offers a dependable and energy-efficient cooling solution for modern trucking operations. It is built to support driver comfort, reduce energy consumption, and perform consistently in the most demanding environments.