Strange chimney problem

roadsgt97 1 post Jan 13, 2008 2:12 AM

When I light my wood burning fireplace, my gas furnace pilot light on the other side of the house blows out. How do i stop this.

jasonr 24 posts Feb 01, 2008 3:49 PM

Well without actually seeing this particular situation in action it is hard to tell. two major questions are: How old is the furnace, is this an open fireplace or enclosed fireplace? If I had to take an educated guess...I would say that the stack effect in your home is rather strong, and it is blowing out the furnace pilot light. When you open your fireplace damper there is heated inside air immediatly rising out of the chimney. As you light and stoke a fire the volume of air escaping your house through the chimney is higher and higher. That is why heating with an open fireplace is a loosing battle. Since your home has to take in air in other areas to replace the air it is loosing out the flue, your normal drafts in your house (around baseboards, outlets, doors and windows) are under pressure to allow in more and more cold outside air. This type of increased draft could be what is blowing out your furnace pilot light. ---------- Jasonr Moderator

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