Had this Harmon installed a while back and thought they did everything right but smell smoke in the room. They installed an air box as well In the line but claimed if they went up with the stack they couldn’t go at an angle and would have to go through the deck, then the roof. Since I have a cat door in the window close to the stove pipe I think a vacuum is pulling smoke through that door into the room. My question is could I put an elbow of some type to get the pipe 1) longer, 2) away from the area under the deck?
![887FB20E-966B-488C-87B5-414179D1D48E.jpeg 887FB20E-966B-488C-87B5-414179D1D48E.jpeg](https://www.hearth.com/talk/data/attachments/271/271037-a2176b848495371a61f1c4265657c6c0.jpg)
![Smokum if you gotum Harmon smokes up room Smokum if you gotum Harmon smokes up room](https://www.hearth.com/talk/data/attachments/271/271032-aa519d8a39eefafcc343c04399717568.jpg)
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![887FB20E-966B-488C-87B5-414179D1D48E.jpeg 887FB20E-966B-488C-87B5-414179D1D48E.jpeg](https://www.hearth.com/talk/data/attachments/271/271037-a2176b848495371a61f1c4265657c6c0.jpg)
![Smokum if you gotum Harmon smokes up room Smokum if you gotum Harmon smokes up room](https://www.hearth.com/talk/data/attachments/271/271032-aa519d8a39eefafcc343c04399717568.jpg)