Daily, all year roun,for a short time.

Let me introduce you to Stoßlüften.

Still too much! I haven't migrated everything to Linux yet (poor me).

Dane here. I open all windows for five minutes two times a day, also in the winter.

Southern US, windows are only open in winter, basically whenever it's comfortable outside. Never in the summer. The A/C runs basically 24hrs a day during the hottest 2 months of the year.

Windows on the car are basically left cracked for the opposite time. Rain deflector are installed to allow for this without rain getting in.

Spring: Never, my partner is allergic to tree pollen released during the spring, nor does the indoor temperature warrant opening the windows

Summer: Sometimes in late summer - I am allergic to grass pollen highly prevalent in early summer. Once they clear, I open the windows when it's warmer inside than outside, to cool down my apartment slightly

Autumn: Rarely. The temperature usually does not warrant opening the windows

Winter: Never. It's far too cold to let heat intentionally escape

How I avoid suffocation: my apartment is well-ventilated, this is not an issue whatsoever

I use linux

When we taste the air is a bit a stale, we open the all the windows and sliding doors to exchange the air during all seasons.

I basically never open my windows. This winter, I don’t think I opened them at all except maybe during a big cleaning day.

In Japan, ventilation is required by law, and most modern houses are equipped with a 24-hour ventilation system. Because of that, we don’t really need to open the windows to get fresh air — the system continuously circulates air for us.

At the same time, it doesn’t make the house noticeably colder in winter or hotter in summer. The air also goes through filters, which is especially nice during pollen season.

So I don’t really feel suffocated even with the windows closed, since the air is still being exchanged constantly.

Almost never. I lived in a bad neighborhood for too long, so I doubt that habit will change.

I open the windows during winter even when it's like -30c, at some point the air gets stale and circulation is needed. The stuffy air also makes my headspace feel weird, like something is irritating me but I can't tell what it is.

Then at some point I open the windows, I also run a huge fan to circulate air around.

Northern Spain here, they remain closed all winter except the few times I open them to ventilate. Next month I'll probably start opening them during the day and at some point in May or June they'll remain open until the end of September or so.

My bdroom windows are open almost the time, except when it's 30+ degrees in summer (to keep the heat out, we close it during the day) or below and -5 in the winter (to keep the heat in, we close it during the night).

I have sensors that let me know when the outdoor temperature and humidity are both better than indoors so I can open the windows. Typically that’s an hour or two a day in the winter when the weather is nice, and most of the day in the summer.

I never open Windows regardless of season.

I like the fresh scent of Mint in my house instead.

Windows? not often, but I leave my wooden door open, so the kitties can look out and see the birds and stuff.

German here: yes. 24/7

LÜFTEN

I always have a window cracked open in my room, but SoCal coastal weather is best in the world year round. There are few locations with deep water upwelling AND onshore flow atmospheric patterns. Of those, there is only one other location, in Peru, where it is also a temperate desert.

https://www.youtube.com/shorts/HNq-De_wCx0

In the winter, Stoßlüften, especially to get moisture out in winter, to reduce and clear out condensed water on windows and prevent mold. I guess bathroom after a shower more than other rooms either way. In the summer, full night, none during the day.

Sometimes not for a few days, sometimes multiple times a day, sometimes open all day. Depends on the season and a few other things.

I hate Windows

At least once a day. Really depends on the temperature, though. On hot days I open it in the morning to let cool air in, on cold days I avoid leaving it open and only open it temporarily when the air gets noticeably stale, leaving the room when I do so. Inbetween I usually leave it open the entire day.

Though, I only open it fully in the mornings of hot days. Other times I always leave it tilted only.

As soon as the air feels stale you gotta turn off your heating and open all windows for like 5-10 mins in the cold seasons. Air is bad at carrying heat anyway, if you close your windows it'll get warm again quickly.

German "Stoßlüften"

I live in the Pacific Northwest, which means temperatures don't fluctuate too much into extremes.

I personally like having the window cracked at night in the winter. I like to have fresh air, even if it's cold. I feel sick if a room feels too stuffy.

Spring, summer, and fall the windows are definitely open at least at night if not during a larger part of the day. If it's ~15-25C outside, I'll usually have at least one window open. More likely two in the 20s. I just don't tolerate heat well, so I will close my windows during the heat of the day when it approaches 30s.

Otherwise they're only closed if outside is gross (smoke, people talking, hazy) or if I want total silence.

Your parents are right in terms of energy waste, im sorry to say.

I'm quite similar though and air about five times a day but with a timer so that the air gets circulated completely without cooling out the house itself.

The breathing struggle is most likely a mix of dust sensitivity and psychology. For me an air cleaner made a huge difference in my comfort level.

I'd you want to go the scientific approach get a CO2 monitor (the most important element for brain performance when talking about home air) and a PM2.5 sensor for dust levels.

Northern part of a Nordic country: never during winter; never closed during summer, unless raining.

The four days out of the year that it's comfortable weather in Texas, I'll open the window. But only with the screen still on, or mosquitoes get in.

Edit: "comfortable" = between 75-80°F

During winter, having them open for any significant time would risk plumbing freezing. During summer, it's usually a matter of opening them at night so the coolness lasts through the day.

My building is on an old chiller system, so my AC is off ~5 months out of the year. My windows are open the entire time, and I usually have fans set up too to try and keep things cool.

When my AC is on, absolutely never. It is hot here like 7 months out of the year. 

Where I live, there's usually 3-4 months out of the year that it's better to open the windows to let the air in than to use central air. Cheaper as well. In the winter we usually get a day or two where it's warm enough to open up to let air circulate. But swamp ass summer and deep winter here suck eggs to be opening the windows.

Live in a hot weather climate here in Tucson; windows are never open because of the effort required to open them shut them. The AC does its job just fine

Honestly. I used to always keep my window open* over the night. This winter was the first I have regularly not opened my window and just opened it for a bit during the day (yes stoßlüften), which I of course did before as well, since I'm German 😅

* when I say "open" I mean my window would usually be tilted open ("gekippt") not fully opened wide

I got a Technoline WL1030 meter for my room and whenever it reaches 1500 ppm CO2 I open the window until its back down below about 600-700, then I close it to not waste more heat than necessary

Edit: To give some more context, my room is 14 m^2 and about 2.50m high so roughly 35 m^3 of air minus some occupied by furniture call it 30 m^3 maybe. It is a modern house with good insulation and energy retention rating (built to the "Minergie" standard we have here in Switzerland), but without forced air, so not much air is exchanged when the windows are closed. With this I end up roughly having to exchange the air every three hours or so.

Paris here, we sleep usually windows (slightly) open, yes even now in winter

I try to keep windows open as much as possible. I also struggle with breathing when they are closed. During winter tho it’s a struggle. My mom gets furious when I turn the radiator on and set it to anything above level 2 and she never ups hers above level 1. So I’m suffocating and freezing. Sometimes I gotta turn the fan on for a half hour just to get some relief.

I've lived in my current home six years and I'm not even sure the windows are capable of opening. It's wild to me that some people believe they're gonna run out of oxygen if they don't open a window 

Pretty temperate here.

Doors and windows open at least some of the day all year round.

I love sleeping with the windows open in the summer.

Only close them if it's raining

Daily, at least once in the morning and later in the evening. A lot more often whenever it's possible. Summer and winter.

Only when it's cold. Windows are open most of the year.

I find that I need to open them 2-3 times a day.

I open them when humidity goes above 60% in my room, and keep it open until it reaches under 50.

This usually means opening them 2-3 times daily.

Otherwise I get the same suffocating feeling.

This definitely varies by region.

Spain, in winter at least 15 minutes in the morning after waking up and 15 minutes in the evening. In Summer I try not to open the windows during the day only at night because I will be naked alive otherwise

A lot less than I want and need to. My social anxiety is ridiculous with small stuff like this, just opening the windows easily gives me anxiety because I hear people outside. It sucks but I often manage to do it for a while before I have visitors, just so the air fresher.

I rarely ever open windows unless someone asks me to. I get a lot of complaints during the summer of how hot it is indoors, but I adore the heat.

In the winter I have no control over the heat. My radiator has a direct line to the pits of hell. So the windows are open all winter long. They are open in the spring and fall as long as the temp inside will be comfortable. Closed in the summer because AC.

I open at least one door so that my cat , bitches can watch "Bird TV" through the screen door, usually in the mornings while the outside temperature is nice.

I unfortunately live in Texas, so we'll reach fusion temps outside in April or May.

Yes, my cat's name is , bitches.

Depends on temperature. If it's below 10C all day, then generally never, maybe every day or 2 for 10 mins to let some fresh air in. 10-15C, probably most rooms on the first latch during the day and most closed at night. Over 15C and windows open mostly including on the latch at night.

Canada here. Winter never, unless we have a rare warm (above -10c/14f) day. Spring as often as I can if/when it's nice enough outside. Summer usually open until the temps get around 27c/80f then closed and the air conditioner on.

I live in a roughly 100 yr old house though, so with all the cracks etc this place tends to self-ventilate anyway.

Forced air furnace. Windows don't open until summer.

I live in a forested countryside in the Northern Midwest. Leaving the windows open invites in bugs and other small critters. Even with screens on the windows, insects crawl through the cracks, and I've definitely had several field mice chew their way through screens. I also have rabbits and possums who tend to nest up against the foundation of my house, and if a lower window is left open for prolonged periods, I sometimes find babies nesting in the window frame.

If I open my windows, it's for a limited time to get some fresh air moving through the house. I'll turn on strategically placed fans in various rooms to encourage rapid airflow through the house so I can close the windows sooner.

I only open windows in the winter if I need to cool a room quickly. For instance, I'm renting my first floor to a friend and I live on the second floor. But I only have one HVAC unit and thermostat for the entire house. The first floor always stays a few degrees cooler than the second floor (heat rises), so I keep it a little extra hot upstairs to ensure I'm not freezing out my friend. But I'm always hot in general, so I'll either have fans on me all winter, or I'll occasionally shut myself in a bedroom and open the window for 15-20 minutes, just to lower my body temp a bit and help me tolerate the hot house.

There have been a few winter nights where my wife and I have left the bedroom window open to cool down our bedroom, while burying ourselves in thick blankets. We don't sleep well if we're sweaty and stuck to the bed. I usually get up a few hours later and close the window, so we don't freeze overnight.

Unless the air quality outside is poor or worse, the window stays open so I can cope with the reactive compounds created by the gas stove in my rental. I don't really know when my roommate cooks, so I just leave it cracked open a bit. I do live in Canada's PNW so it's not that big of an issue.

I have windows in my house that have not been closed for 20 years. The one in my bedroom for one.

Every day.

We use an estufa during the colder months so we crack open a window so we don't die of CO poisoning

This is an estufa:

Ventilation is very important to keep the air inside breathable and to keep things like mold outside.

I like to show the importance of this by lighting some incense (or vaping a bit) to show how the smoke just does not go away with the window closed. The same happens with the CO2 that comes out of your mouth, you just don't see it in that case.

Exceptions would be when your building has some other ventilation system built in, but the smoke would show that.

Overhere I always have some form of ventilation open (our house has these ventilation thingies above the windows, that I get angry about when my partner closes them).

Pretty much daily working from home in southern California. My dogs and I get pretty antsy without fresh air and noises.

Maybe you could get a dehumidifyer, measure the humidity first to figure out if it's necessary

Spring into early summer and autumn. In the summer, I may open them early on, but it's best not to let the crazy humidity in.

My body runs like an oven when I’m asleep. To that end, I have the heating off by the time I’m in bed (winter), and if the air still isn’t crisp enough, I’ll open the window a crack.

In the warmer months I straight up cannot sleep if the windows are closed.

Edit: forgot to mention that I am in the UK

Our place is ventilated well enough that I don't need to open the windows for ventilation or to manage humidity per se, but I am fortunate enough to live in an area with good quality air, so I often do in spring/summer/fall just because it feels fresher.

In winter, I don't want to freeze or waste energy, so I usually keep them closed. But once in a while, if I have my computer running for a long time and the heat is also on for the rest of our place, I may crack the window a bit just to keep that room from becoming unbearably hot.

I live on the Chesapeake Bay, so during the late spring into late Fall, I open my windows pretty much daily on the weekends and whenever I am home during the week.

Never, I switched to Debian…

Mostly just the spring and fall, but occasionally the summer if it’s nice out and rarely the winter if it is unseasonably nice. Sometimes crack a window for a short time if the toddler makes a really smelly bm

Never of course. Don’t know exactly what Winter and Summer mean, some desktop environments maybe? And what is fresh air?

Rarely, I just have my AC on to make it hot or cold and the solar panels make it almost free.

Window open means bugs get in, and they tend to like lights like my computer screen and I'm sick of cleaning bug goo off the screen.

Whenever it's vomfy

Antarctican lumberjack, don't open the windows or doors in winter, check out the window in summer if any trees have sprouted (none so far).