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That's going to depend on

- the beginning temperature in the room, before you light the heater

- the relative humidity inside the room

- the height of the room, floor to ceiling

- the rate of heat loss ('R'-value) of the floor, ceiling, and walls

- the temperature outside the room

- the means of air circulation in use inside the room.

In general, unless the temperature outside the room is 120 or higher,

you can never turn off the heater for good.

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11y ago

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