The answer to 'why is my carpet discolored' is that there are several common causes, including spills, heavy foot traffic, sun exposure, and improper cleaning. Discoloration can appear as fading, staining, or uneven color across the carpet.
If the discoloration is localized, such as from a spill or pet accident, you may be able to spot clean the area using a mild detergent and water. However, if the discoloration is more widespread, it's likely due to general wear and tear or improper cleaning. In these cases, it's best to have a professional carpet cleaning service assess the issue and provide a deep cleaning to restore the carpet's appearance.