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The Vent-Axia eDemand Frequency Inverter (Single Phase, 4 Amp) delivers precise demand-based ventilation control for A/C speed-controllable motor fans. Housed in a robust IP54-rated enclosure, it is suitable for various commercial and residential applications where reliable operation and protection are essential.

Compatible with the full eDemand control range, this inverter supports both single and three-phase models and includes an adjustable duty/​share timer for load balancing between twin fans. In the event of a fan fault, the automatic changeover function activates the standby unit to maintain uninterrupted operation. Fan failure alarm contacts are also included to enable system alerts or BMS integration.

As part of the wider eDemand series, the inverter features a consistent user interface across models and comes equipped with an integrated sine filter for smooth, efficient motor performance. Designed for flexibility and reliability, it supports advanced ventilation setups in line with modern HVAC requirements.