Replace Fan Blade Assembly on 18 Inch Misting Fans

Quick answer

To replace the fan blade assembly on your 18 inch misting fan, disconnect power, remove the old blade, and install the replacement by tightening it onto the motor shaft.

Step-by-step replacement process

1. 1. Disconnect power and prepare the fan: Unplug the misting fan from the electrical outlet. Place it on a stable, dry work surface. Remove the front grille if present (usually held by clips or screws). Always disconnect power before any maintenance to prevent accidental startup.
2. 2. Remove the old fan blade assembly: Locate the set screw or lock nut securing the blade hub to the motor shaft. Loosen it using a Phillips screwdriver or wrench. Slide the old blade assembly off the shaft. Check if the old blade has a keyway—keep the key if present for reinstallation.
3. 3. Install the new fan blade assembly: Align the hub of the new blade assembly with the motor shaft. Slide it on until it seats fully. Tighten the set screw or lock nut firmly, but do not overtighten. Ensure the blade spins freely without rubbing against the fan housing.
4. 4. Reattach the grille and test operation: Replace the front grille and secure it. Plug the fan in and turn it on at low speed. Listen for unusual noise and check for wobble. If you hear scraping or feel vibration, stop immediately and recheck alignment.

Product facts

• Fan Blade Assembly for 18 In. Misting Fans: Replace your damaged fan blade and restore your misting fan to once again enjoy a cooling breeze. Simply swap your old assembly with the replacement and properly tighten on the motor shaft as previously installed. This ensures a secure fit and safe operation, avoiding wobble that can damage the motor.