A standard aircon cleaning in the Philippines typically takes between 30 minutes and one hour per unit when the service involves filter washing, coil cleaning, and drainage flushing without disassembling the unit. Chemical cleaning takes slightly longer, usually one to two hours per unit, due to the additional time required for the cleaning solution to work before rinsing. A full chemical overhaul is the most time-intensive service and can take two to four hours per unit since it involves complete disassembly, individual component cleaning, and reassembly, so homeowners should plan for technicians to be on-site for most of the day if multiple units are being overhauled during the same service visit.