Tonada EC fans are built around a permanent magnet synchronous motor, with integrated rectification, drive stages and intelligent control circuitry. They connect directly to single-phase or three-phase AC mains, eliminating the need for external variable frequency drives and DC power supplies.Featuring an external rotor design, the airfoil impeller is integrated directly with the motor rotor, eliminating conventional transmission losses. Every unit undergoes system-level matching and calibration of the motor, control electronics and impeller prior to delivery, ensuring optimal whole-fan efficiency rather than standalone motor performance.The product range covers two core aerodynamic platforms, namely backward-curved and forward-curved multi-blade impellers, fitting mainstream frame sizes from compact fan coil units to large air handling units. With motor efficiency exceeding 90% at rated duty, the fans fundamentally eliminate the slip losses inherent to AC induction motors.

   The brushless architecture eliminates carbon brush wear. Paired with maintenance-free precision bearings and robust insulation protection, the fans achieve a continuous service life of over 70,000 hours. IP54 and IP68 ingress protection ratings are available as options, and critical circuits are treated with conformal coating to withstand harsh operating conditions including moisture, dust and oil mist.

    Tonada EC fans are widely applicable across both HVAC and industrial cooling sectors. Typical HVAC installations include air handling units, outdoor air units, fan coil units and cleanroom air conditioning. Industrial cooling use cases cover enclosure ventilation, variable frequency drive cooling, laser equipment thermal management, cooling tower ventilation and other demanding scenarios.