Where to place a radon test in the house
A detector on top of the fridge, or beside the furnace, does not describe the air you breathe at night.
The room
- Lowest room people use: bedroom, office, family room.
- If the basement is only storage, test the lowest floor where someone sleeps.
- Not the kitchen, bathroom, or a closed closet.
- Away from windows, exterior doors, heat registers, and the HRV outlet.
Height and time
Between 0.8 m and 2 m off the floor. Open it at the start, write the date and time, and leave it for 4 days or 91 days. Do not move it. The sheet in the kit repeats these steps. Which length to choose.
The 4-day test is a first reading. The 91-day test is the length Health Canada uses to judge a full heating season. Both are $59 before tax. Shipping, the prepaid return, and the lab are included. Tax is extra. The PDF report is emailed within 2 business days after the lab receives the detector.
Above 200 Bq/m³, the fix is a fan that pulls soil gas from under the slab and exhausts it above the roof. Radon Gas is C-NRPP certified for testing and for mitigation, and ships kits across Canada. Start from the Canada test page.
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