ACMV Systems Retrofit

In the fields of refrigeration, air conditioning, and building services, AC asynchronous motors are commonly used to drive fans. However, the efficiency of this method is relatively low, leading to an increase in energy consumption. To solve this problem, EC technology is widely used in the speed regulation of AC asynchronous motors, and its performance far exceeds traditional AC and DC speed regulation methods.

The Sanmu EC fan has the advantages of simple structure, wide speed regulation range, high speed regulation accuracy, convenient installation, reliable operation, and significant energy savings. Switching to EC plug fans not only benefits environmental protection but also reduces operating costs and improves comfort.

Why Retrofit ACMV systems With EC fans?

Significant Energy Savings: 

ACMV systems are often among the largest energy consumers in buildings (sometimes >60% of total consumption), and fans alone can account for around 35% of the energy consumption. Replacing conventional AC fans with EC fans can deliver a 20–50% reduction in fan energy use, depending on the application and controls strategy.


Lower Operational Costs: 

With higher part-load efficiency and reduced electrical demand, facility managers can expect shorter payback periods and a lower Total Cost of Ownership (TCO).


Improved System Control & Comfort: 

Modern EC fans support advanced controls, enabling smart building integration, demand-based airflow modulation, reduced noise levels, enhanced occupant comfort and better indoor air quality

Get Started with Your Retrofit

Retrofitting your ACMV system with EC fans is not just a technology upgrade — it’s a strategic investment that lowers costs, improves performance, and enhances sustainability in the built environment.

Contact us for a site visit and free assessment.

Industry Use Cases