Cooling fan selection

DC vs AC vs EC Cooling Fan Selection Guide

Choose the input power and motor platform before comparing size, airflow, static pressure, bearing, signal wire and cable options. SXDOOL reviews each fan recommendation around the equipment environment and RFQ requirements.

Use Fan SelectorSend RFQView Product Platforms

DC Axial Fans

Best fit for low-voltage equipment, electronics, power modules, servers and compact thermal paths.

  • 5V, 12V, 24V, 48V and 60V DC
  • PWM, FG and RD signal options
  • 20mm to 280mm platforms

AC Axial Fans

Best fit for mains-powered panels, equipment ventilation and continuous cabinet airflow.

  • 110V, 115V, 220V and 230V AC
  • Lead wire or terminal review
  • Metal or plastic frame options

EC Energy-Saving Fans

Best fit when AC input is needed together with lower power use or smart speed control.

  • 110V, 115V, 220V, 230V and wide-input options
  • PWM, FG or RD by project
  • 40mm to 280mm EC platforms

Blowers and Cabinet Ventilation

Use when the airflow path needs static pressure, ducted airflow or enclosure filter ventilation.

  • Centrifugal airflow paths
  • Filter fan and louver assemblies
  • Cutout and mounting review
Buyer questionSelection direction
Is the equipment powered by low-voltage DC?Start with DC axial or DC blower platforms.
Is the fan connected to AC mains?Review AC axial, AC blower or AC-input EC options.
Does the system need speed control or alarm feedback?Specify PWM, FG tachometer or RD alarm in the RFQ.
Is airflow blocked by filters, ducts or heat sinks?Review blower, high-static-pressure or cabinet ventilation options.

Buyer questions

FAQ

What is the fastest way to choose between DC, AC and EC fans?

Start with the equipment power supply. DC fans are used for low-voltage electronics and control systems. AC fans are used for mains-powered ventilation. EC fans use AC input with electronically commutated motor control for efficient cabinet airflow.

Can SXDOOL review PWM, FG or RD signal options?

Yes. SXDOOL can review PWM speed control, FG tachometer feedback and RD alarm output for suitable DC or EC cooling fan projects.

What should an engineer send before selecting a fan?

Send frame size, voltage, airflow or static pressure target, noise limit, bearing, cable length, connector, signal wire, application environment and estimated quantity.

DC axial model routes

Compare DC fan frames by size and installation depth

Use these model routes to compare the mechanical platform before requesting a voltage, speed, bearing, connector and signal configuration. Final approval should follow the controlled drawing and a test at the real system resistance.