[rallison]

Yep. Even if the building as a whole is generally well ventilated, particular spaces in a building can still build up CO2 pretty quickly. It's actually quite dramatic to see the rise in chart form at times.

These sensors are really nice to help validate ventilation anywhere.

[twothamendment]

Yeah, location matters a ton. I have 2 Awair Elements and we ran them in different places until we knew what "normal" looked like, then move them on.

Because of what I saw in my house we switched from a gas stove/oven to electric induction, installed an air exchanger and set our central air/heat to recirculate more often (only important for us during spring and fall when we aren't heating or cooling much).

I don't like noise when sleeping, so I liked the bedroom door shut. CO2 gets way too high, so I switched to using an earplug and leaving the door open more.

It is so nice to have the data, make informed choices and see measurable results.

[rallison]

Yep, I also run central air in fan only mode much more often now. Since I'm in coastal California, I don't need to run heating/cooling for much of the year, so previously that meant central air was rarely on.

Now, I'll run it fairly often for the recirculation. And, since my house is old and leaky, aside from evening out levels, it no doubt results in more indoor:outdoor air exchange too. That alone made a massive difference at night, since I will usually have the bedroom door closed.

And, while I haven't switched the range over to induction yet (it's on the list to eventually do), I did get a portable induction burner that I use fairly often instead of the gas range. Induction is pretty amazing, so I look forward to eventually going all the way.