Hacker News Reader

Comment by bluSCALE4 | Hacker News Reader

I bought an Aranet recently and at night, it can go as high as 1600. I figured not wasn't as important at night but this article has me wondering. I will say that I've been going to the office 2-3 days a week and I've been sleeping a whole lot better lately. I don't recall when horrific sleep started but I'm fairly certain it was pre pandemic.

View on HN

https://pubmed.ncbi.nlm.nih.gov/26452168/

> “Objectively measured sleep quality and the perceived freshness of bedroom air improved significantly when the CO2 level was [below 900ppm], as did next-day reported sleepiness and ability to concentrate and the subjects' performance of a test of logical thinking.“

1600ppm is definitely impacting your cognitive abilities and it's something you need to fix ASAP.

That sounds pretty high! Have you made any changes or do you still have it hit 1600 while you're sleeping? I was never able to find a good source for what levels to target, but I did come across this study [1] which claims to have measured a difference in cognitive function the next day for people who slept with avg c02 levels at 835 ppm vs the group at 660 ppm. I don't have the background to judge the legitimacy of the study, so it could be bogus for all I know. But keeping the window has been enough for me to keep the levels below 800 so I've tried kept that as the limit

[1] https://pubmed.ncbi.nlm.nih.gov/26452168/

I did replace my water heater with an electric one. I got this after that so who knows that the baseline used to be but I do have some ideas for more improvements. I may open the window a smidge to see if it makes a difference. A little hesitant since I have a newborn and it being winter and all. I'm trying to get Home Assistant to work with Bluetooth so I can link the two and turn on the bathroom fan.

One thing I came across while looking into c02 and ventilation was the recommendation to sleep with the door closed but window open for fire safety concerns: https://fsri.org/programs/close-before-you-doze. Something else to consider when settling on a setup

Man, last night my levels jumped to 2,200. A major source looks to be the stove top as we made lentil soup. I also heard about windows: opening up the top and bottom to let hot air out and cold air in. Will try it out once we have 60º nights.

Reply on news.ycombinator.com