this post was submitted on 26 Dec 2025
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Did any of those sensors measure nitrogen dioxide?
Yes, actually. I can see the level go up slightly when the burners go on, but when the ventilation fan kicks in, the levels go back down almost immediately.
Yeah that's why. Most people don't have a real vent in their homes. It's the recirculating one or nothing.
That’s what should actually be illegal. I see those everywhere now, and I can’t believe they were ever allowed. Mine is bad enough as a ceiling vent without hood but at least it does vent outside