Passive or active radon system the fan is what you can adjust
A passive system is a sealed pipe that starts under the slab and ends above the roof, with no fan. Warm air rising in the pipe can pull a little gas. An active system adds a fan in that pipe. The suction becomes reliable, in summer and in winter. Health Canada’s construction guidance describes both: the passive pipe helps, and the active fan is what you adjust when the test stays high.
You do not choose from a catalogue. You measure. If the passive pipe leaves the bedroom above 200, add the fan rather than opening a second hole at random. Connecting a rough-in. The active system.
Reference points: Health Canada, what you need to know about radon and the 200 Bq/m³ guideline. The two-year timeline between 200 and 600, and one year above 600, comes from Health Canada’s guide for radon measurements in homes.
The 4-day test gives a first reading. The 91-day test covers the three-month minimum Health Canada asks for. Both are $59 before tax: shipping, return and the laboratory are included, taxes extra. The PDF report is sent within 2 business days after the laboratory receives the detector.
Above 200 Bq/m³, mitigation is confirmed with a quote. Gaz Radon is C-NRPP certified for measurement and mitigation.
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