It will reduce ripping, extending the life of a filter. Potentially doubling filter life. As far as when to replace a filter, there are few indicators that may be helpful. To a degree, you can look at the filter, and if it looks nasty even after a good cleaning, it may be time for a new one.
1.3.2. CSC may utilize the services of outside vendors, agents, and advisors. CSC may also engage the services of a third party (who is under a duty to maintain the confidentiality of information) to provide technical or other support in connection with CSC Engage Secure.
Commission on Teacher Credentialing (CTC) The California Commission on Teacher Credentialing is an agency in the Executive Branch of California State Government. It was created in 1970 by the Ryan Act and is the oldest of the autonomous state standards boards in the nation.