# Trade certifications explained

Plain-English guides to the certifications trades workers need, such as EPA Section 608 for anyone who handles refrigerant. Each explains who needs it, what the exam covers, how to sit for it and what it costs, and links the official rules and a free practice test.

## Licensing, liens and insurance

- [EPA 608 Certification: Who Needs It and How to Get It](https://www.brix.so/certifications/epa-608): EPA 608 certification explained: who needs it, Type I, II, III and Universal, test format and passing scores, how to replace a lost card, and A2L changes.

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Canonical: https://www.brix.so/certifications