A stuffy bedroom in the morning is almost always caused by a buildup of CO2, moisture, and heat while sleeping in an enclosed space. The air in your room at eight in the morning is no longer the same as it was when you went to sleep at eleven.
What happens to the air at night
As soon as you close the door and windows to sleep, the air in your bedroom gradually changes. You breathe in oxygen and breathe out CO2, your body gives off heat, and moisture escapes into the air through your skin and breath. With two people sleeping in an average bedroom, the CO2 concentration can rise significantly within a few hours, especially if the windows and door are tightly shut.
How much moisture and CO2 do you produce while sleeping
A sleeping person releases about 300 to 400 milliliters of moisture through their breath and skin during the night. With two people in a small, poorly ventilated room, this, combined with the accumulated CO2, can significantly affect how the air feels the next morning: heavy, warm, and stuffy.
How to recognize a stuffy bedroom
A few recognizable signs of a bedroom that doesn't get enough fresh air at night:
- You feel less rested upon waking up than the amount of sleep would suggest.
- The air feels heavy or stuffy when you enter.
- The windows are slightly fogged up on the inside.
- You sometimes have a slight headache or dry mouth upon waking up.
What you can do about a stuffy bedroom
The most direct solution is ventilation: leave the window slightly ajar at night, or air out the room thoroughly before going to bed and again immediately after getting up. Keep the bedroom door slightly ajar if possible, so that air can circulate with the rest of the house. If the room is noticeably damp in addition to being stuffy, for example with windows that stay fogged up for a long time, a dehumidifier can be a useful addition. In that case, we recommend the Dynter AirPure DH251, which removes excess moisture from the bedroom air without having to leave the window open all night.
In short: a stuffy bedroom is usually just a matter of insufficient air circulation during the night. Leaving a window slightly ajar and airing out the room thoroughly every now and then already solves most of the problem. You can find more information about a healthy indoor climate at dynter.eu.