I sleep in what would be considered a relatively large master bedroom with ensuite. Recently got an AirGradient One sensor and was shocked at the overnight co2 levels.
When sleeping with window and door closed and just by myself, co2 levels exceeded 2,000ppm by morning and only fell once I was awake and opening doors.
With the window slightly open and the door slightly open, levels were at a much better 700ppm or so.
If this thing works as advertised, that would be great. There are a lot of situations where it’s difficult to sleep with the window or the door open.
I configured my furnace to always recirculate air in the house even when burner itself is off - helps to avoid rooms with stale air and evens temperature through the house.
Your HVAC is supposed to recirculate the air using the fan feature. And you don't even need to run it 24/7; I find that running it for a few minutes each hour is enough to get CO2 levels down.
When sleeping with window and door closed and just by myself, co2 levels exceeded 2,000ppm by morning and only fell once I was awake and opening doors.
With the window slightly open and the door slightly open, levels were at a much better 700ppm or so.
If this thing works as advertised, that would be great. There are a lot of situations where it’s difficult to sleep with the window or the door open.