Radon rises silently from the rock under your home — odourless, invisible, and a leading cause of lung cancer. Onyx Radon brings certified testing and mitigation to your foundation.
Alberta sits on some of the highest radon levels in Canada. Radon gas seeps up from the ground into homes, where it concentrates in the air your family breathes every day. The only way to know your level is to test — and the only way to fix it is proper mitigation.
Accurate short- and long-term measurement of radon levels in your home, to the C-NRPP standard. Know exactly where you stand.
Professionally designed sub-slab depressurization systems that pull radon out before it reaches your living space — built into your foundation.
We re-test after mitigation and provide documented proof that your home is safe — ideal for real-estate transactions.
Onyx has stood for protection for centuries — a stone, drawn from the same earth, that guards the home. We pair decades of combined home-protection experience with modern diagnostics and monitoring technology: old-world solidity, reinvented for how homes are protected today.
The team behind Onyx Radon has earned hundreds of 5-star reviews across home-service work in Calgary — the same diagnostics-driven care, clean workmanship and honest follow-through, now focused on radon.
“Trustworthy, excellent customer service, efficient and lasting repairs, clear communication and a cleaned-up workspace on completion.”
“Very professional and punctual, and the work was completed efficiently with excellent results. Highly recommend.”
“A dedicated, hardworking, time-conscious team. Their work ethic and service are excellent — I'd gladly use them again.”
Reviews from our home-service work. Verified radon-client reviews are added as our first systems go in.
Fast, certified radon testing and mitigation for real-estate transactions — documented, reliable, and on your timeline. Build us into your buying and selling process.
Partner with OnyxPractical guides on testing, mitigation costs, radon during home sales, and what Alberta's geology means for your home.
Book a certified radon assessment for your Calgary home — clear results, honest advice, and a fix that's proven to work.
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