Hi, 👋

My house is being renovated, with replacement bathroom exhaust fans. Much to my shock, I visited the house and see this big pipe sticking straight out of the side of it, where it can be viewed all the way down the street. I asked the contractor what was going on with that, and he says it’s a vent for the bathroom fans. He further said, it was the right thing to do, as without it, my new fans wouldn’t work properly, and that the house must not have had that before. I asked why the ones that are on the roof couldn’t be used, since they had always worked just fine before. He said, maybe they are not any good, and that the best decision was right through my new siding. Is this standard?