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On whether changes in bedroom CO2 levels affect sleep quality

gwern.net

91–100 of 322 posts

Re: On whether changes in bedroom CO2 levels affect sleep quality

#91
post #37
post #34

Earlier quoted context omitted.

Curious if you have a link to what sensors you had? Think this is cool and i've been on/off looking for co2/o2 sensors greater than recreational precision

Can’t speak for OP but I’ve been using the IQAir Air Visual Pro and can support everything they’ve said. I try to keep CO2 around 400-500 in my office and home but it spikes surprisingly fast with even one person breathing in a medium sized room. It can integrate with HomeBridge and has a good API and unlike a lot of IOT stuff it’s well supported and stable.

do you know how accurate it is?

Re: On whether changes in bedroom CO2 levels affect sleep quality

#92

Is it just coincidence that Tom Scott uploaded a video about CO2 and its influences at almost the exact time the gwerns link was submitted? https://youtu.be/1Nh_vxpycEA

Wasn't there a recent discussion on HN on the Baader-Meinhof Phenomenon?

Re: On whether changes in bedroom CO2 levels affect sleep quality

#93
post #85

Earlier quoted context omitted.

If you believe that is a serious concern in your area, get bars for your windows. There is no shame in it, I've lived in numerous buildings that had barred windows. However I suspect that most people don't sleep on the ground floor (either in a multi-level house, or in an apartment building) so for them this should be less of a concern.

But the HOA won't let you and you'll have a hard time selling it then, because you have indicated that the house is in a dangerous area.

Well, is your area a dangerous area? None of the homes in high crime neighborhoods I've lived in have had HOAs.

But if you're actually contending with both at the same time, there are window bars that are placed inside the window, not outside.put the blinds between the window and the bars, then crack the window open and get some airflow.

Or hell, install a fan in your attic, the way people used to before AC was ubiquitous. Bedroom ventilation is not an unsolvable problem. If you really want a solution, you can find one. If you want an excuse to have no solution, I'm sure you can find endless excuses too.

Re: On whether changes in bedroom CO2 levels affect sleep quality

#94
post #69

This is especially pronounced at high altitude, and when running a furnace in the winter. I keep large black tents (4x4 ft or 2x4) in every bedroom in the house, and grow kale, spinach, chard, peas, tomatoes, etc inside (with handmade COB LED lights). I don't have any sensors to get a real idea of the difference in CO2 it makes, but it allows us to run the furnace less at night (heat from the lights), and makes a not…

> but it allows us to run the furnace less at night (heat from the lights) Dear God, what's your power bill? There's no way a LED lights heat is as efficient as just using the furnace. edit: I meant cheap, not efficient.

Assuming the furnace is electric too, they should both be the same efficiency, since 100% of the power is being eventually turned into heat, unless the light from the LEDs are going outside.

Re: On whether changes in bedroom CO2 levels affect sleep quality

#95

Earlier quoted context omitted.

> but it allows us to run the furnace less at night (heat from the lights) Dear God, what's your power bill? There's no way a LED lights heat is as efficient as just using the furnace. edit: I meant cheap, not efficient.

Assuming the furnace is electric too, they should both be the same efficiency, since 100% of the power is being eventually turned into heat, unless the light from the LEDs are going outside.

I never considered an electric furnace - I come from a land of ice and snow and the only real option is natural gas.

Re: On whether changes in bedroom CO2 levels affect sleep quality

#96
post #29

I was lucky to get my hands on 5 proper co2 sensors from university, while I was teaching and working. So plenty of test places. What I found: -Just a couple of hours in a office, without ventilation spikes the co2 enough to make everyone dizzy and tired by the end of the day. Keeping eye on the meter and ventilating properly, increased everyones productivity and people werent so tired by the end of the day. - Classr…

[deleted]

Re: On whether changes in bedroom CO2 levels affect sleep quality

#97
post #69

This is especially pronounced at high altitude, and when running a furnace in the winter. I keep large black tents (4x4 ft or 2x4) in every bedroom in the house, and grow kale, spinach, chard, peas, tomatoes, etc inside (with handmade COB LED lights). I don't have any sensors to get a real idea of the difference in CO2 it makes, but it allows us to run the furnace less at night (heat from the lights), and makes a not…

> but it allows us to run the furnace less at night (heat from the lights) Dear God, what's your power bill? There's no way a LED lights heat is as efficient as just using the furnace. edit: I meant cheap, not efficient.

Theres no difference in heating efficiency for any source. Heat is heat and it doesn't really matter if it's generated from a heating element in a furnace or an LED light. And with the light you're at least getting dual use out of it.

If they have a gas furnace it might be different but that would also depend on how their electricity is generated.

Re: On whether changes in bedroom CO2 levels affect sleep quality

#98
post #29

I was lucky to get my hands on 5 proper co2 sensors from university, while I was teaching and working. So plenty of test places. What I found: -Just a couple of hours in a office, without ventilation spikes the co2 enough to make everyone dizzy and tired by the end of the day. Keeping eye on the meter and ventilating properly, increased everyones productivity and people werent so tired by the end of the day. - Classr…

There was an NBA coach who use to obligate his players to sleep with at list some inches/centimeters of air access in their windows hotel rooms the night before playing an important game/match. Don't remember what Team.

Colder temperatures also generally help people sleep.

Re: On whether changes in bedroom CO2 levels affect sleep quality

#99
post #97

Earlier quoted context omitted.

> but it allows us to run the furnace less at night (heat from the lights) Dear God, what's your power bill? There's no way a LED lights heat is as efficient as just using the furnace. edit: I meant cheap, not efficient.

Theres no difference in heating efficiency for any source. Heat is heat and it doesn't really matter if it's generated from a heating element in a furnace or an LED light. And with the light you're at least getting dual use out of it. If they have a gas furnace it might be different but that would also depend on how their electricity is generated.

Yeah, I was thinking gas furnace. Also the heat would be localized to a couple of areas and not the whole house heat that a furnace would probably provide.

Re: On whether changes in bedroom CO2 levels affect sleep quality

#100
For the hackers out there, you can record CO2 with a K33 sensor. The [0] Livpi uses this chip.

EDIT: it appears the Livpi uses a K30 chip. The K33 [1] is the version sold on industrial sites.

[0] http://www.livpi.com/ [1] https://www.co2meter.com/products/k-33-icb-co2-sensor

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