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Annexair

EC-Spider Fans

Next Generation Efficiency

Designed to maximize efficiency and minimize noise levels

Annexair’s fan incorporates the advantages of EC-PM motor technology and a super-efficient “Diffuser Wheel” with airfoil blade geometry to bring a new level of performance.

Man in business attire standing next to a large white industrial frame housing eight metallic, cylindrical mechanical components arranged in two rows.

Features

  • Each wheel size can perform up to 10” TSP
  • Motor sizes range from 1 kW up to 15 kW (1.35 hp to 20 hp)
  • Internal motor shaft isolation prevents voltage induced bearing damage
  • Engineered with non-obstructive air intake
  • Molded edge on each back plate for increased rigidity and strength
  • 100% epoxy coated fan ideal for corrosive environments
  • Airfoil blade geometry provides lower sound levels (dB)
  • Meets AMCA #204-05 for balance and vibration levels; Category BV-3
  • Lifetime maintenance-free motor bearing, no lubrication required
  • Box-free design, less metal parts means less reverberation
  • Piezometer tap ready for optional airflow measurement
  • Robotic welded Aluminium diffuser wheel construction
  • N+1 fan redundancy (optional)
Side view of a silver industrial fan with protective cage and mounting plate.
White square ventilation fan with blades visible through a circular opening in the center.
Side view of a metallic industrial ventilation fan with protective frame mounted on a square plate.

The EC-Spider has been carefully designed and tested using the latest computer modeling, resulting in an outstandingly rigid assembly. Manufactured to extremely tight and precise tolerances, the EC-Spider provides improved overall fan performance.

Side view of a white air diffuser wheel with blue airflow symbols above and below it.

Diffuser Wheel with airfoil blade geometry

Technical line drawing of a diffuser wheel showing four mounting points highlighted with blue circles.

Edged plate for improved rigidity and strength

Technician operating a control panel to balance an industrial fan inside a testing chamber.
Annexair tests every fan assembly rigorously using a state-of-the-art fan balancing machine

Efficiency Classes
EC-Spider Motor vs AC Motor

• IE & NEMA comparison diagram representation
• Our EC-Spider fan is IE6 and next NEMA ready
• Our EC-Spider fan exceeds the IE4 super premium efficiency by 6% and the IE3 by 10%
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