I haven’t found much information about the Holtop ERV, but the Comfort Fresh Air model :https://www.holtop.com/holtop-comfort-fresh-air-ceiling-mounted-energy-recovery-ventilator.html possibly good outperforming Zehnder and Blauberg.

According to the specs, it offers a maximum airflow of 2000 m³/h, making it ideal for homes over 3000 sq. ft. It features a DC motor with 10 adjustable speeds. Has anyone installed this system, and what has the feedback been like in terms of performance and efficiency? I want it installed in France.