Macao Consumer Council, together with Beijing, Tianjin, Shanghai, Chongqing, Hong Kong, China Consumer News, and 21 other consumer organizations/councils, announce consumer alerts periodically and work closely on protecting consumers' rights and safety. The 22 consumer organizations remind all consumers to check the racks they use for supporting outdoor air conditioner compressors. Before turning on the air conditioner, the soundness of the supporting rack must be thoroughly checked and any loosened bolts must be fastened. For air conditioners which have been installed for a long period of time, consumers should generally check the supporting rack or replace with a new one after the first five years. The 22 consumer organizations also state that businesses bear the responsibility to provide safe products and good services to consumers and ensure the safety of the supporting racks. Further, Consumer Council reminds consumers to check the soundness of supporting racks and to choose a trusted supplier/engineering company when installing or replacing air conditioners and their racks. It is also important to check whether the installation complies with respective regulations. Consumer Council hotline: 8988 9315.