Quote:
Originally Posted by tvp2003
A word of warning -- the UofC did a study a few years back and the "short term" testing isn't accurate; it is recommended that you do longer term testing (because it can fluctuate from day-to-day): https://ucalgary.ca/news/ucalgary-re...n-gas-exposure
Also, I read that testing in the winter months is better because your house is "sealed" up versus in the summer when you might have more windows open, etc.
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Yes the threshold levels are based on average exposure over a long period of time. You should test over at least 3 months (not short-term readings) and over the winter.