Maybe take a look at a Vacu-Stack chimney cap review ..... an unusual chimney cap device that supposedly will increase the chimney draft without using an electric fan.
Using the magical power of thermo-dynamic wind resistance energy it will power up the draft draw as it sits atop the chimney, or something!
Comes in many sizes to fit every chimney ever made since chimneys were first invented ....
www.woodlanddirect.com/high-wind-chimney-caps/
Like, when nothing else works ..... maybe worth a try? ..... the VACU-STACK chimney cap ......
https://www.youtube.com/watch?v=DiNduld4jhY ..... as seen on TV .... beep-beep-beep ......
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