The LEED Reference Guide language describing the criteria for the different types of cleaning equipment is a bit confusing—it is not always clear which criteria apply to which equipment types. All equipment must be ergonomically designed to minimize noise and vibration, and must have safeguards such as rollers or rubber bumpers to minimize damage to building surfaces (this is something you’ll have to look into for yourself, since the certifications do not address ergonomics and safeguards). The following is a summary of specific cleaning equipment that IEQc3.4 addresses and the associated compliance criteria.