Stretch wrote:
Probably not a good idea.

First it violates code in most areas.

Really?

Second if it is a gas dryer there are gas fumes going into the house.

CO detector: $30. If it's not a gas dryer, you get only heat.

Third the moisture it generates will be very localized and could allow
mold growth.

Added humidity is generally good in the winter.

fourth, it will put a lot of lint into the house, as some
lint will still get through both the dryer lint filter as well as your
homemade filter.

Add an A/C filter (or a part of one): $1.00

I have seen it done, there has always been a lot of
lint around the discharge.

Conversely, how much lint does one see at the usual discharge outlet?

Seems like a good idea, but it is not.

Total cost to handle any downside problems: $31.00. Savings on heating bill:
unknown, but not insignificant.