Two ways to measure — both done right

⏱️

Short-Term Test

A quick snapshot (typically 2–7 days) of your home's radon level — ideal when you need answers fast, such as during a real-estate transaction.

📆

Long-Term Test

A 90-day-plus measurement that captures seasonal swings for the most accurate picture of your true average exposure. Health Canada's recommended approach.

📑

Clear Reporting

You receive a clear, documented result in Bq/m³, what it means against the 200 Bq/m³ guideline, and honest advice on next steps — no pressure.

Why test with Onyx

Accurate, certified, honest

C-NRPP-standard measurement protocols
Proper device placement — results you can trust
Plain-language reporting, no scare tactics
Seamless path to mitigation if you need it

Tested high? We've got you.

If your level comes back above the guideline, we design a mitigation system to bring it down — and re-test to prove it worked. One team, start to finish.

See mitigation

Start with a test

Request a free quote and find out what's really in your home's air.

Request a free quote