The challenge
The existing garage ventilation system used single-phase, dual-speed transformer-controlled radial fans. This outdated setup was inefficient, partially malfunctioning, and consumed unnecessary energy. Reliability had also become an increasing concern.
The solution
To upgrade the setup through replacement of the outdated and old units with two reliable and energy-efficient NOVENCO® ZerAx® axial fans.
Each of the new fans have a 0.8 kW motor with a combined output of 1.6 kW. Compared to the previous 3.2 kW total load, the new solution cuts energy use by 50%.
On-demand ventilation
The new setup employs frequency drives to add major efficiency gains by enabling variable fan speed control. The system now adjusts airflow to match real-time demand.
During low-traffic hours, such as at night, fan speeds drop significantly — reducing energy use by up to 80% or more.
The frequency drives integrate seamlessly with the existing gas detection system. This smart interaction ensures ventilation, adapts automatically to actual air quality, and maintains optimum airflow and a healthier environment.
Facts
- Optimal airflow and improved air quality
- Better overall performance
- Increased system reliability
- 50–80% energy savings
- Space-efficient design
Space saving
The new installation has a compact footprint, as shown on the right. The reduced size improves access to the nearby staircase door and enhances operational convenience.
Enhanced overall performance
Beyond substantial energy savings, the upgrade improves system reliability, supports long-term sustainability, and delivers optimised airflow. Together, these benefits create a significantly stronger and more efficient car park ventilation solution.
