The length of a utility audit will depend on numerous factors, including the size and complexity of the facility, the scope of the audit and the availability of utility data. In general, a utility audit can take anywhere from a few days to several weeks or months, during which time auditors will review utility bills and documentation, analyze usage patterns and identify opportunities for savings, cost reductions and increased efficiency. They may also conduct on-site inspections and interviews with building occupants or facility managers. The duration of the audit process can also depend on the level of detail required in the audit report, as well as any follow-up actions or recommendations that need to be implemented. Ultimately, the goal of a utility audit is to help facility owners and managers improve their utility efficiency, reduce utility costs and enhance the sustainability of their operations, so the time and effort invested in the audit can yield significant long-term benefits.