Working height is the height at which the average man reaches from the platform of a lift. Several aspects should be considered when choosing the working height of an aerial lift. Many people go by the theory that they should buy the biggest lift they will likely ever need. This however may not be a good idea. Large lifts are usually more expensive and often more importantly are much heavier. Weight is a factor for two reasons. Trucking can be problematic with larger lifts weighing more than 20 tons. In addition heavy lifts are much much more likely to get stuck on a job site or on residential jobs to damage a homeowners lawn. Of course if a lift isn't tall enough for your job it's useless but for an occasional one week high job you may be better off renting a larger lift for those days.