does natural gas heat cause humidity or dryness?
Ok that first answer was right but since it got a thumbs down, now I will give you the technical side of it. On a natural gas furnace the moisture in the combustion air either goes up the flue as a vapor or gets condensed in the heat exchanger and drained outside. This is moisture that is actually removed from the space. This process combined with the fact that the furnace is creating warm air (which expands with no moisture added) causes the relative humidity in the space to go down. So yes, it causes dryness. All forms of adding heat do decrease relative humidity in a closed space, but not all forms of heat remove moisture from a closed space.
all heat sources causes dryness. EDIT: B-notable, thanks for the support
