We got a new furnace and the super old one was basically just as good. Get a good carbon monoxide alarm for your bedroom and also one right by the machine.
I mean the whole house shouldn’t rot from normal bathroom moisture and hopefully their attic is ventilated but for sure the mold problem isn’t going to go away from that solution. Some people don’t see mold as a problem because they aren’t sensitive or allergic to it themselves.
We got a new furnace and the super old one was basically just as good. Get a good carbon monoxide alarm for your bedroom and also one right by the machine.