We have had our new TP09 for about a week now. We really like it and can tell it’s made a difference in the air quality. One thing we have noticed is that is never stops running in auto mode. Definitely due to the formaldehyde which seems to be down to .045-.060. But can’t get lower on its own. If we open windows it will start to read lower.
is it possible that our house just has that much (5 year old new build) that it can’t keep up on its own? When we first got the TP09 it was sitting at .275.
Best answer by DavidTaylor
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