Identify the fan's role before choosing a replacement

Check whether you are replacing a part-cooling fan, a hotend fan, an electronics fan or a power-supply fan. Follow the printer manufacturer's part and installation guidance for that location.

Cooling Depends on the Printing Material

More part cooling is not always better. Prusa's cooling guidance notes that some materials can warp or suffer layer separation with excessive cooling. Use the appropriate printer and material profile rather than a universal fan-speed rule.

Choosing the Replacement Fan

• Model and housing: record the full part number and whether the original is an axial fan or an enclosed blower.
• Dimensions and mounting: measure frame size, thickness, hole spacing and any duct or outlet.
• Supply: match the original fan's AC or DC marking and voltage. Do not select a wide-range mains-powered fan simply because the printer is small.
• Connection and controls: confirm connector keying, lead count and documented signal functions.
• Performance: use exact-model data and the printer's requirements; a generic airflow or noise number does not establish suitability.

Installation and Included Parts

Follow the printer's service instructions. Confirm whether the purchased unit includes a duct, guard, screws, cable or other accessories; photographs and a product-family name do not establish a complete installation kit.

Brand and Compatibility

If considering an SXDOOL-labelled option, check the specific model and assembly against the original part. Brand-wide efficiency, lifetime and printer-compatibility claims are not substitutes for those checks.

For a replacement, use Photo Support with the full label, connector and mounting photos. For quantities or sourcing requirements, request a bulk quote; availability, pricing, included parts and lead time are confirmed for the specific request.