Will a fire in a room affect humidity?

2015-08-05T08:57:49Z

Hypothetically, if you were to just light a fire in the middle of the room, will that have any effect on the humidity of the room? It's hard to find an answer online - I'm mostly finding information on wildfires and that humidifiers can be fire hazards!

2015-08-05T09:11:45Z

Hypothetically, if you were to just light a fire in the middle of the room, will that have any effect on the humidity of the room? It's hard to find an answer online - I'm mostly finding information on wildfires and that humidifiers can be fire hazards!

I'd like to know the how/why, too, if possible, since I'm curious. On one hand, fire's associated with drying, but on the other, would it evaporate more water into the air due to the heat?

cyswxman2015-08-05T09:33:03Z

Favorite Answer

Assuming that there is no additional source of water in the room, the humidity itself would not change as humidity is simply the amount of water vapor in the air. Now the Relative Humidity would lower as the air temperature rose since warmer air can hold more water vapor, and Relative Humidity is the ratio of how much water vapor is in the air RELATIVE to how much that air can hold.

40

?2015-08-05T09:39:23Z

As the temperature in the room goes up, the relative humidity would go down. The absolute humidity may actually go up, since water is a product of combustion and also because water absorbent materials may lose water to the air in the room.

30

jade2015-08-05T08:57:51Z

Yes the fire would make the humidity in a room drop.

20

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