Ventilating a room with no forced air without opening windows

air-quality

I would like to ventilate my bedroom because air quality monitors show CO2 levels rising above 2000ppm every night.

I have two windows in the room, both with blackout blinds, but I prefer not to open them at night because they are street-facing and sun-facing and bring in noise and light. I also can't open the bedroom door for roughly the same reasons: light and sound from the rest of the house.

My question is, how can I ventilate the room given these constraints?

Two solutions I have thought of so far:

  1. Use window fans. This would work, except it would also probably bring in both light and noise.
  2. Use a fan + some sort of duct to force air under the door. According to the article here, from what I understand, door undercuts can work. I am just not sure what to look for to begin to build or install something like a door undercut fan duct.
  3. ??

Any other suggestions are welcome as well.

Best Answer

Have you considered just increasing the gap under the door to 1cm or 2cm and putting a fan to extract air from the room into the roof space?

You would only need to have a small fan - even a 4" fan from a computer power supply (although there are quieter ones, or reduce the voltage a bit) will create probably sufficient air movement.