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S7U8S7A2

08:00AM | 03/16/04
Member Since: 03/15/04
2 lifetime posts
Bvhvac
I installed a wood burning furnace in my basement, with an outside double-wall / air insulated steel Class A chimney. During high winds, I am getting smoke back into my house through the furnace loading door. I am convinced the wind is so strong it is pushing down the chimney.

If I keep the chimney temperature at 350 degrees+, I can reduce this problem. But when the wind gets to 30MPH+, it gets tougher to keep the smoke going the right way.

I bought a chimney cap that was supposed to eliminate this problem, by creating a venturi action when wind tried to blow down the stack; the problem was reduced, but is still a problem.

The chimney is at the rear / southwest of my home; the wind comes from the southwest and blows past the chimney and toward the roof.

The chimney does not go above the peak of the house, but the top of the chimney is at least 10 feet away from the roof.

No one has yet been able to guarantee a solution; one tells me this specialty cap would fix the problem, someone else says I may have a negative pressure issue in the house, someone else says I need to increase my chimney height.

Any ideas out there? Have you run across this problem? What was your solution?

Thank you.

Steve

Steve Reyna

S7U8S7A2

07:48AM | 03/30/04
Member Since: 03/15/04
2 lifetime posts
I am double checking, but I do believe the distance is the 10 feet mentioned.

As my roof pitch is pretty steep, and the high winds coming across the field are un-obstructed, do you think the 10 feet distance might be on the "ragged edge" of the requirement, and I should add another 3 foot extension to the chimney?

How confident are you that would solve the problem?

Thank you.

Steve

Steve Reyna
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