What are the C-NRPP radon certifications, and how do you get one?

C-NRPP runs four radon certifications: measurement, mitigation, rough-ins in new homes, and laboratories. Three of them need a course and an exam, and the laboratory certification needs an audit instead. No province or territory requires any of them by law. Health Canada recommends that radon measurement and mitigation professionals be certified through C-NRPP. See how to choose and check a radon professional.

Measurement comes first; the mitigation credential needs the measurement course as a prerequisite

Each of C-NRPP’s four certifications has its own course or audit, and the mitigation credential builds on the measurement course:

1. Radon Measurement Professional (CRT): places and collects detectors and reports lab results. Course: 2 days in class or 16 hours online. Exam: 100 questions in 2 hours.
2. Radon Mitigation Professional (CRMT): reads results, runs diagnostics, and designs and installs systems. Course: 4 to 5 days in class or 24 hours online, plus a mentorship. Exam: 120 questions in 3 hours.
3. CRNCH Installer and Inspector: active-ready and passive rough-ins in new homes. Course: 4 to 6 hours in class or 4 hours online. Exam: 50 questions in 1 hour.
4. Analytical Laboratory: analyzes detection devices. No course: an application, an audit and an intercomparison evaluation.

CRNCH (Controlling Radon in New Canadian Homes) pairs with the Level 1 and Level 2 rough-in labels. It suits builders, framers and building inspectors. See what the rough-in and system labels say.

Each credential is a course, a proctored exam, the code of ethics course and an application

For measurement, the steps run in order: a measurement course, the proctored exam, C-NRPP’s online Code of Ethics course, then the application. The ethics course takes about an hour, and every certified professional in every stream must take it. Insurance is encouraged for measurement, not required. Once you are certified, C-NRPP’s quality assurance requirements apply to the devices you use.

For mitigation, the measurement course and the Code of Ethics course come first. Then you take a mitigation course and the 120-question exam. Next comes the mentorship: supervised real installations with an approved mentor. Insurance is mandatory for mitigation and quoted by a broker, and the application is the last step.

Mitigation mentorship

$500

Fee for the C-NRPP mitigation mentorship, the supervised work a mitigation candidate must finish within six months after the exam.

Date

2026-09-18

Sample

Not applicable

Source

C-NRPP, Mitigation mentorship

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See what a mitigation professional installs.

What it costs to get C-NRPP certified in the first year

These are first-year costs on the online route, as listed on 18 September 2026, before tax. Prices change.

• Measurement only, online, first year: $815 total. Course $430, exam $175, certification $110, CARST membership from $100.
• Measurement and mitigation, online, first year: $2,740 total. Two courses $1,680, two exams $350, mentorship $500, certification $110, CARST membership from $100.
• Neither total includes insurance or tools.

C-NRPP approves trainers and does not teach, so course prices come from C-NRPP’s course list. Classroom mitigation courses with the $500 mentorship included were listed at $2,350 to $2,495. French-language online courses were $595 for measurement and $1,995 for mitigation. Writing an exam again costs another $175.

A mitigation kit was $1,200 to buy or $175 for a 30-day rental. Laboratory certification was listed at $125 a year for electret labs and $250 a year for alpha track labs. See how many credentials are active in each province.

Certification renews on a fixed cycle with continuing education credits and annual fees

Certification renews every two years, and each cycle needs continuing education credits.

Certification renewal

20

credits every 2 years

Continuing education C-NRPP requires to renew a certification every two years, with at least 4 credits from C-NRPP approved courses and hands-on work counting for at most 10. Holders also pay yearly fees, take the mandatory renewal course and sign the Code of Ethics, and mitigation professionals must carry insurance.

Date

2026-09-18

Sample

Not applicable

Source

C-NRPP, Professional Resources

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The credits beyond the C-NRPP approved courses come from at least 2 of four categories: community outreach and radon awareness, radon industry participation, professional development, and hands-on practice. Hands-on practice earns 1 credit per measurement job and 2 per mitigation job. The mandatory renewal course earns one credit each cycle, and a course counts only once. You also file the renewal before expiry, and labs renew separately and join the yearly intercomparison.

If a certification has lapsed for a year or more, the holder faces the renewal credits, any outstanding fees and added requirements. A Code of Ethics violation while lapsed can rule out recertification. Certification is valid across Canada. Look up a number in C-NRPP’s Certification Check. See every certified business, listed free.

No province requires certification to test or mitigate for a fee

Health Canada’s action guide points out that provinces hold the power to regulate professions. None of the provinces or territories has used it for radon work.

The same guide notes that C-NRPP already provides the training, exams, certification and registration that provincial law could require for paid radon work. Health Canada recommends that radon measurement and mitigation professionals be certified through C-NRPP. See what radon law does and does not require.