Q. We recently had our AC/heating unit replaced. The installer said the old one was leaking carbon monoxide. So why didn't the carbon monoxide detector go off? It was and still is working(the installer tested it).
The installer didn't try to sell us a new one.
The installer didn't try to sell us a new one.
Answer
The way gas furnaces work is the blower motor that circulates hot air through the house has a higher static pressure than the combustion blower moter that creates the fire making the heat exchanger get hot. When the heat exchanger goes bad or gets holes in it it can leak carbon monoxide but more likely it will lose pressure from the blower motor air forcing air into the heat exchanger and not into the house. This would cause a roll out event. This is where the flame from the furnace would travel in the wrong direction tripping a safety limit shutting down the furnace. The way furnaces are designed even if they leak carbon monoxide or have holes inb the heat exchanger they will still keep the levels in the house at safe limits.
The way gas furnaces work is the blower motor that circulates hot air through the house has a higher static pressure than the combustion blower moter that creates the fire making the heat exchanger get hot. When the heat exchanger goes bad or gets holes in it it can leak carbon monoxide but more likely it will lose pressure from the blower motor air forcing air into the heat exchanger and not into the house. This would cause a roll out event. This is where the flame from the furnace would travel in the wrong direction tripping a safety limit shutting down the furnace. The way furnaces are designed even if they leak carbon monoxide or have holes inb the heat exchanger they will still keep the levels in the house at safe limits.
Why does my carbon monoxide alarm keep going off?
LoveuEndle
Everytime my mother cooks using the stove, the carbon monoxide detector goes off. It seems like every sunday when she cooks for a long period of time faithfully the detector goes off like an hour after the stove has been shut off. I take it down remove the battery and open the windows. about 20 minutes later i put it back up....no alarm goes off. the battery is new so that shouldnt be an issue. The only thing i am fearing is a possible gas leak. What should i do?
Answer
It could be a couple of things.
How old is the detector? They have a sensor that only lasts so long and they should be replaced every 5 years.
If your mother is cooking with gas is there an exhaust fan that removes the air to the outside of the house? If not it could be caused by the recirculation of the combustion air back into the flames.
A good flame should also be a light blue, if it is a lazy yellow flame then there isn't enough primary air (air that is mixed with the gas before combustion) if that is the case then you should ask someone who knows how to adjust it and they should also check for soot which may be evidence of flame impingement.
Gas, like electricity, it is safe if done properly but can be very dangerous if done wrong and Carbon monoxide is very dangerous and any warnings should not be ignored.
It could be a couple of things.
How old is the detector? They have a sensor that only lasts so long and they should be replaced every 5 years.
If your mother is cooking with gas is there an exhaust fan that removes the air to the outside of the house? If not it could be caused by the recirculation of the combustion air back into the flames.
A good flame should also be a light blue, if it is a lazy yellow flame then there isn't enough primary air (air that is mixed with the gas before combustion) if that is the case then you should ask someone who knows how to adjust it and they should also check for soot which may be evidence of flame impingement.
Gas, like electricity, it is safe if done properly but can be very dangerous if done wrong and Carbon monoxide is very dangerous and any warnings should not be ignored.
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