Good news! The CSIA Certified Chimney Sweep® (CCS) and Certified Dryer Exhaust Technician® (C-DET) Online Review classes are now a part of the CSIA eLearning subscription and they are immediately available upon day 1 of your subscription. Let’s look at the savings: 1 CCS or CDET Online Review is $249. For 3 employees, that is $747. … More Online Reviews Now Part of eLearning Subscription