ESCO Institute is offering free online practice for the certification exam required by the Federal Clean Air Act for individuals who work with regulated refrigerants.

Practice exams are available online 24 hours a day, seven days a week and do not require special programs, discs, or registration. Once a practice exam is completed, a statistical report is provided to help the test-taker identify his or her strengths and weaknesses.

To take a practice exam, click here.