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Even on healthy apartments it's common that you have to air them 3 (maybe 4) times a day for around 30min each to have low CO2 levels (assuming you spend the wh

Even on healthy apartments it's common that you have to air them 3 (maybe 4) times a day for around 30min each to have low CO2 levels (assuming you spend the whole day indoors in a single room apartment with not too much air volume, no kitchen usage or separate kitchen you have the door closed to, etc.). Most people I know don't air out their room/apartment long enough and/or often enough. And I have been thinking about getting some form of huge fan to speed up the airing exchange process in winter.

tzs 4y ago
> Even on healthy apartments it's common that you have to air them 3 (maybe 4) times a day for around 30min each to have low CO2 levels. Would it work to just open small openings on opposite sides of the apartment and put a small fan on one and run it continuously? With the right fan speed that should be equivalent to the big 30 minute airing ever few hours, but I'd expect it would be less disruptive when it comes to comfort because it should result in much less temperature variation.
- dathinab 4y ago
  In the end it's all a matter of how much air is exchanged if air from everywhere inside is at least somewhat affected and how high/low the outside CO2 levels are. E.g. if you have a apartment in the 5th floor where always have a bit of wind and can open windows so that the wind flows through just opening it for 5min might have as much effect as other people get with 40min. Or e.g. if you have the right kind of wind putting windows into tilting mode can work well and in other cases (like my apartment) you will leak heat with very little air exchange. I have been thinking about using some sort of fan but haven't tried it out. Part of the reason is that in summer I just can keep the window open all the time and currently we have winter temperatures around 4-7C during the day and my room temperature is most times around 16C in winter anyway, so ... it's not too much of a heating problem (compared to people heating their room to 20+C).

tzs 4y ago

> Even on healthy apartments it's common that you have to air them 3 (maybe 4) times a day for around 30min each to have low CO2 levels. Would it work to just open small openings on opposite sides of the apartment and put a small fan on one and run it continuously? With the right fan speed that should be equivalent to the big 30 minute airing ever few hours, but I'd expect it would be less disruptive when it comes to comfort because it should result in much less temperature variation.

dathinab 4y ago
In the end it's all a matter of how much air is exchanged if air from everywhere inside is at least somewhat affected and how high/low the outside CO2 levels are. E.g. if you have a apartment in the 5th floor where always have a bit of wind and can open windows so that the wind flows through just opening it for 5min might have as much effect as other people get with 40min. Or e.g. if you have the right kind of wind putting windows into tilting mode can work well and in other cases (like my apartment) you will leak heat with very little air exchange. I have been thinking about using some sort of fan but haven't tried it out. Part of the reason is that in summer I just can keep the window open all the time and currently we have winter temperatures around 4-7C during the day and my room temperature is most times around 16C in winter anyway, so ... it's not too much of a heating problem (compared to people heating their room to 20+C).