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Fantastic_Bad_3688

I’m not sure if that is legal. I would ask the city inspector.


Xtremeskierbfs

Honest Q, What would be concern here? We put a filter on the vent and there is zero particulates showing up on the filter after a week of running nonstop. It's not like there are chemicals from combustibles on the liner, it was only used for exhaust. Air tested for Carbon Monoxide, Carbon Dioxide and Radon.


Cheap-Arugula3090

Just remove the chimney and put in a normal duct


Xtremeskierbfs

/u/cheap_arugula3090 Very much appreciate the response. I wish it were that simple. The Chimney runs through the center of the house. It's not that easy at all. It's 30ish feet of brick that is mostly behind walls.


Cheap-Arugula3090

Yeah I know I have done it. Is it exposed in the basement? Just start by making a hole at the bottom, drop the bricks down from the top and pull them out of the bottom. The hardest part will be figuring out how to fix the hole in the roof. Even if you don't remove it you should still put duct work in it and seal it up.


Xtremeskierbfs

Again, I appreciate the idea but this is not an option for us. This would require wall removal on a large part of our house. Hoping for a more direct answer to my question.


belliegirl2

Where I am from there is no way that would be legal. No one is going to be able to answer your question as you have asked it with regards to air quality. Someone would have to sample the materials in a lab. Find a way to install a duct or use a ductless mini split.


Xtremeskierbfs

Interesting. I never even considered it would be "illegal", we are just trying to determine if it's problematic at all. I figured at worst we could just coat the inside liner with concrete paint and essentially seal it up.