The warranty on the Luminess Air system generally covers the air compressor and the airbrush, typically providing a limited warranty period for these components. The specific duration of the warranty can vary depending on the model and the terms in effect at the time of purchase. Generally, customers can expect the warranty to cover defects in materials and workmanship under normal use. It is advisable for users to keep the purchase receipt, as it may be required for warranty claims. For the most accurate and up-to-date information regarding the warranty specifics, including the exact duration and any limitations, it is best to refer to the product manual or the current webpage dedicated to Luminess products, where detailed warranty information is typically outlined.