Who is responsible for F-Gas compliance…? Anyone who operates a Refrigeration or Air Conditioning unit with a capacity of over 3kg is required to maintain that system at regular intervals. In the UK, these checks should be carried out by a REFCOM registered engineer. However, it is the responsibility of the system owner to ensure that the work is done and that accurate records are kept available for inspection. Failure to implement adequate F-Gas records can result in prosecution and large fines.