3 ms·
carbon monoxide is less dense than air - according to wikipedia, density at room temperature is 1.15 kg/m³ for CO vs 1.275 kg/m³ for dry air. The nest protect
by conitpicker 13y ago
carbon monoxide is less dense than air - according to wikipedia, density at room temperature is 1.15 kg/m³ for CO vs 1.275 kg/m³ for dry air.
The nest protect retails for US$129.00 and has a service lifetime of 7 years.
I recently checked all the smoke detectors at my parents house and found that they were all well past their 10-year replace-by date. (I replaced them, but not with Nest smoke detectors).
- sliverstorm 13y agoFun little tangent; I don't know how old my smoke detectors are, but the one by my front door gets a little test every now and again. One of my neighbors burns a fireplace on cold days. Invisible (but smellable) quantities of wood smoke pool under the rafters of my porch; the next morning, when I leave through the door, the smoke alarm always chirps for a moment! It amazed me how sensitive it is, when I first figured out what was going on.