Only air conditioning systems with an effective rated output of more than 12kW are affected by these regulations. This will include systems consisting of individual units which are less than 12kW, but whose combined effective rated output is more than 12kW.
The effective rated output is the maximum calorific output in kW stated by the manufacturer of the system as delivered during continuous operation while complying with the useful efficiency indicated by the manufacturer.
One or more air conditioning units within a building controlled by a single person are considered to comprise a single air conditioning system for the purposes of the regulations.
‘Air conditioning system’ means a combination of all components required to provide a form of air treatment in which the temperature is controlled or can be lowered; and includes systems which combine such air treatment with the control of ventilation, humidity and air cleanliness. (As defined in The Energy Performance of Buildings (England and Wales) Regulations 2012 (as amended)). This guidance is intended to cover any air conditioning system where refrigeration is used to provide cooling for the comfort of the occupants of the building.
There is no exemption within the regulations which restricts the inspection and maintenance of systems to those purely for the comfort of occupants. Refrigeration provided solely for process applications, such as cold stores and pharmaceutical production, can be inspected. However, this guidance is not intended to cover dedicated process cooling systems.
Mike Gordon
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