Plant
Not sure that’s effective enough to make a practical difference.
Doubly so at night.
Ask HN: Best way to remove CO2 in a bedroom?
11–20 of 101 posts
Re: Ask HN: Best way to remove CO2 in a bedroom?
#12When using a CO2 sensor in my room, opening a window was very noticeable as a drop in CO2 on the graph.
Re: Ask HN: Best way to remove CO2 in a bedroom?
#13Periodically open your windows wide. If the CO2 quickly builds up though, you could perhaps just leave some windows cracked open. Or you should get some proper ventilation installed. If CO2 is high then other pollutants are likely also high.
Re: Ask HN: Best way to remove CO2 in a bedroom?
#14Re: Ask HN: Best way to remove CO2 in a bedroom?
#15I want to experience pre-industrial co2 levels
Re: Ask HN: Best way to remove CO2 in a bedroom?
#16Breathing during sleep adds only little CO2 to the environment. Here's a calculator: https://www.omnicalculator.com/ecology/co2-breathing-emissio....
Re: Ask HN: Best way to remove CO2 in a bedroom?
#17It’s typical for bedrooms to have a ACH (Air Changes per Hour) rate of between 0.35 and 1
So the CO2 is removed regularly.
Re: Ask HN: Best way to remove CO2 in a bedroom?
#18Re: Ask HN: Best way to remove CO2 in a bedroom?
#19There is no small scale human comparable in room CO2 removal bio/tech. Human breath will increase CO2 in a closed room on the order of many hundreds of ppm over hours, while even "superplants" like those in an Algen Air will decrease it at best on the order of low tens. We need improvements of two orders of magnitude to have room scale impact. So the only answer is "fresh" air ventilation.
Re: Ask HN: Best way to remove CO2 in a bedroom?
#20Not being snarky, but a window is one of the best options. Air conditioners can often be your worst option, as the air is recirculated more aggressively. We use a window fan that has multiple settings: circulate, ingress, egress. I find that no matter what setting you use, air is recirculated significantly well. On hot days, the fan is set on egress. This seems to do a really great job of removing excess CO2 while no…
> a window is one of the best options.
Add a fan and it's hard to find something more optimal and cheap for this problem.