I noticed when kids play in the basement the VOC spikes really high on the airthings monitor. Last night was close to the red zone. I brought downstairs Dyson to check what it has to say but the Dyson VOC showed green. I am very confused.
PS: The VOC levels in the basement got worse after we installed a new furnace. The basement window is always cracked opened. If the kids are not in the basement, Airthings reads low VOC