Radon Mitigation Certification

NRPP Radon Mitigation Certification is for professionals who design and install systems that reduce radon levels in homes and buildings. It confirms that the credential holder has the technical knowledge and the practical skill to put in a system that works and that meets the applicable standard.

Credentials in this discipline

• RMS, Radon Mitigation Specialist. Designs mitigation systems, diagnoses buildings, and adapts an installation on site when conditions require it.
• RMI, Radon Mitigation Installer. Installs systems under the direction of a certified RMS. An RMI does not design systems and does not change the design on site. The supervising RMS relationship must be reported to NRPP.

You do not need to hold a measurement certification in order to certify in mitigation. They are two separate credentials for two different roles, although knowledge of one is useful in the other.

Requirements

• Complete an NRPP approved initial training course in radon mitigation.
• Pass the NRPP radon mitigation examination. Exams are delivered remotely and are four option multiple choice.
• Work to the applicable AARST and ANSI mitigation standard for the building type you are working on.
• Sign the NRPP code of ethics and confirm that you hold and follow a quality assurance and quality control plan.

Certification is valid for two years. Indoor Environments Association membership is not required in order to be certified.

How to apply

• Take an approved initial training course. Course completion is valid for [confirm validity period] from the completion date.
• Register for and pass the examination.
• Request a certification application, then upload your course completion certificate and the remaining evidence to your NRPP account.
• Pay the application fee. Current fees are published on the fee schedule [confirm fee schedule link].

Keeping the credential

Every two years you renew. Renewal requires eight hours of continuing education, the Mandatory Standards Overview course, your state license where your state issues one, and signed ethics and QA/QC declarations. See Continuing Education for what counts and the category limits.

State requirements

NRPP certification is not a state license and does not grant one. Several states license radon mitigation separately and a few also require a contractor registration. Contact your state radon office before you begin working in a new state.