• Schriftzug "RetrofitBlue"
viele Ventilatoren auf einem Dach

At one of Germany’s largest data centres, 64 unregulated AC axial fans were replaced by highly efficienct ZAplus units coupled with ECblue motor technology, thus providing energy-efficient fans to the coolers.



  • Annual saving of approx. 128,000 kWh
  • Annual cost savings €19,200 (based on € 0.15 per kWh)
  • Amortization time: 2.9 years
  • Acoustic benefit of 2 dB(A) per fan
  • 37% reduction in power consumption
  • 57% flow rate reserve available (for increased cooling performance in summer months)
  • The alternative energy solution ZAplus+ achieves the operating point of the old fans even at low speeds
  • Very fast and easy installation due to compatible basic dimensions of wall ring plate