One of the first decisions in cooling fan replacement is whether the original fan is AC or DC. This sounds basic, but it is a common source of replacement errors.

When AC Fans Are Common

AC fans are common in cabinets, industrial ventilation, panel cooling and some equipment that runs directly from line power.

When DC Fans Are Common

DC fans are common in servers, 3D printers, embedded systems, telecom equipment and electronics cooling.

Why This Matters in Replacement Matching

An AC fan cannot simply replace a DC fan, and vice versa. You must confirm voltage class, dimensions, connector style and application requirements.

Where to Start

Browse AC Fans or DC Brushless Fans. If you are unsure, use the Replacement Guide.