Open windows. There's not much else you can do. Even in the winter, I open it long enough to change the air and hopefully without letting the heat escape too m

Open windows. There's not much else you can do. Even in the winter, I open it long enough to change the air and hopefully without letting the heat escape too much. I used the old generation Awair, they are no longer supported. Now it reads false readings about air quality, so I'll be switching to one of the competitors. Good things is that Awair seem to have opened the door, there was not a lot of devices a few years ago and now there are a more options.