A:AnswerThank you for reaching out to Lasko.
The recommended way to clean a Lasko tower unit would be to take a vacuum with the brush attachment on the hose and vacuum the front and rear grill of the fan from the outside without opening the unit. We advise that the unit is not opened in any capacity as doing so can void the warranty. If the unit is still not clean, you may take a can of compressed air and blow in the front of the unit from the outside and then vacuum the rear vents to pull the dust out. See video linked here: https://www.youtube.com/watch?v=OwoUi_esJbY&feature=youtu.be
