In some circumstances, the Portascanner® may be able to serve as a complete replacement for a door fan test or other pressurisation test. In many cases, however, the pressurisation test is mandated by regulations. In these cases, the Portascanner® is a perfect complementary diagnostic tool, that will help you pass the pressurisation test first time. ISO 14520 regulations also state that any installation must undergo periodic inspections after passing the door fan test. The Portascanner® will provide you with a far more robust test for these inspections than visual inspection alone, giving you a far higher level of confidence in the airtight integrity of your enclosure.