Renewing Your C-DET Credential

The CSIA Certified Dryer Exhaust Technician (C-DET) credential must be renewed every three years:

1. Complete a review course, either online or in-person. The online review is also part of a CSIA eLearning subscription.
2. Pass an exam, which can be after an in-person review or taken in-person with a proctor or online through ProctorU.​

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Note: If your certification is lapsed and you have an expired certification, you must start the certification process over.

To read CSIA's full policy on credential renewal, go here.