[macNchz]

I've had an Awair monitor for a few years and enjoy keeping a fairly close eye on the numbers, but from what I've experienced so far I'm convinced sure I'd be able to train myself to discern CO2 levels. If anything it has mostly just encouraged me to open the windows, even just for a bit, whenever possible, and to always use the kitchen exhaust fan with our gas stove (and motivated me to buy an induction range in the future).

[moduspol]

Same here. I was truly surprised at how fast the CO2 goes up with our gas stove on. The only thing worse is when we use our unvented gas logs in the fireplace.

We're switching houses next month and I'm seriously considering putting in an ERV. It's just a little tricky to explain to friends and family because it kind of makes you sound like a crazy person. But CO2 is measurable! And there is clear science about bad effects when it gets high!

[simondotau]

PM2.5 is also measurable and is arguably the greater long-term concern to human health with respect to indoor combustion.

(Not to mention the physics of fireplaces makes them counter-productive. They are effectively air pumps which suck in the warmest air inside your home and send it up the chimney. And that air has to be replaced from somewhere, most likely bitter cold outdoor air, through the many concealed cracks and crevices in your home.)

[jonstewart]

Yeah, I want to put in an ERV, too, to have the sense of fresh air all year round.

[colechristensen]

Especially if you do things like stirfry or anything which puts char on your food, particulate from the cooking food will be way more than from the cooking gas so induction won’t make a large difference.

Ventilation and good hepa filtration will make a much bigger difference.