All air conditioning systems with an effective rated output of more than

12kw must be regularly inspected by an energy assessor. The inspections must be no more than five years apart.

The regulations require the first inspection of the affected air conditioning systems to be carried out as follows:

1. for all systems first put into service on or after 1 January 2008, the first inspection must have taken place within five years of the date when the system was first put into service
2. for other air conditioning systems, where the effective rated output is more than 250kW the first inspection must have taken place by 4 January 2009
3. for other air conditioning systems, where the effective rated output is more than 12kW the first inspection must have taken place by 4 January 2011