Helios Fans HV 250/4 R

The Helios HV 250/4 R is a flush-mounted wall fan designed for installation in walls, funnels, and thin panels, suitable for ventilation through openings with a nominal size of 150 mm in mid-sized to large rooms. The fan features a facia and casing made from high-quality, impact-resistant white polymer. The facia covers the intake opening with upward-directed fins and can be easily removed for cleaning with soapy water.

This fan is equipped with a high-pressure, profiled 7‑blade impeller made from durable impact-resistant polymers, making it well-suited for high volume air movement applications.

Powered by a totally enclosed AC condenser motor with built-in thermal contacts, the fan allows speed control via voltage reduction. It is maintenance-free, with low-noise sealed-for-life ball bearings, and features a reversible motor for both supply and extract air functions.