If your boiler license expires, how long do you have to renew it before you must retest?

The correct choice reflects the fact that once a boiler license expires in Ohio, it cannot be renewed without the necessity of retesting. This means that there is no grace period available for individuals to renew their license without going through the examination process again. It emphasizes the importance of keeping your license current and understanding the serious implications of allowing it to lapse.

This structure serves to encourage professionals in the boiler operation field to remain diligent about managing their licensing status to ensure compliance with regulatory standards and maintain their qualifications. Thus, staying informed and proactive about license renewal is critical.