why don't ovens need exhaust vents?

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RaylanGivens

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everything else does. my dryer, my furnace, even my water heater. why not my oven?
not always. i have one but it doesn't vent to anywhere. its just there.
 
it's a good question, one I can only guess at; ovens don't get much hotter then 450 deg, and throttle near that temperature so the gas is not being burned all the time, so can mix with room air and not create a buildup of carbon monoxide.

dryers run full open for 30 minutes or more, and furnaces run hotter for longer periods of time.
 
They do have an exhaust vent. It comes out around, or beneath one of the burners.
 
Gas ranges don't need venting because the burners are smaller, which uses less gas, and are only in use occasionally for generally short periods. Larger gas ranges like in restaurants need the hoods.
 
They don't produce anything requiring a vent.Some people do have a vent for the greasy fumes,but it's not dangerous.
 
Ideally, if the gas stove/oven is adjusted properly, they generate little carbon monoxide from incomplete burning of fossil fuels. Incomplete burning is indicated by a yellow flame. And as others have said, stoves do not run for long periods of time or use as much fuel as a central heating system.

The reason water heaters and gas dryers are vented is because the flames aren't generally viewable and they run for longer periods of time at more frequent intervals. Gas stoves do not.

http://www.ext.colostate.edu/pubs/consumer/09939.html
 
most of the heat stays inside the oven. whether a freestanding range or a wall oven, the only air cooling is for the control boards and other components. this just vents into your house. an oven wouldn't be much of an oven if the heat was vented out would it? the water in the water heater isn't vented. and in a dryer, the hot air vaporizes the moisture in the clothes, and it's the moisture more so than the heat that needs to be vented out.

oh and some ovens can approach 1000 degrees f in a self clean cycle.
 
Your dryer requires a vent in order to vent the moisture which is produced when drying. Your furnace and water heater produce carbon monoxide and other dangerous gasses by burning fuel, which also needs to be exhausted. Unless you are a terrible cook, there should not be anything dangerous coming out of your oven.
 
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