When my mother had a power failure, but wanted to stay in her apartment until the power company fixed things, I bought a propane heater. The instructions said to open the window, but didn't really say how much.
It seemed like she'd end up colder with the heater than without it.
How much did the window have to be open?
Is it ever worth using a propane heater indoors in the winter?
George said:
That cold
>air pipe is meant for a certain percentage of make
>up air from the outside. Required in many
>communities with newer homes that are built air
>tight and is likely to be 10 to 15 percent of the
>air. Seems like a bit much if in a cold place.
>But the purpose is to supply fresh air because
>much of the inside air is highly contaminated by
>the materials used in building, furniture,
>carpets, etc.