First and foremost, the information on this page refers only to electric clothes dryers. Do not vent your gas clothes dryer inside your house. This is extremely dangerous and can be fatal! I cannot stress this enough. It is not possible to vent a gas dryer inside your house under any circumstances.
We live in Colorado where the humidity levels are very low. Especially in the winter when the furnace heats the already dry air, lowering the humidity even lower.
As I was sitting on the couch one cold winter day, I could see a huge condensation cloud coming out the side of our house. I wasn’t alarmed because I knew it was the hot moist air from the clothes dryer being vented outside into the chilly 15°F air. But I got to wondering, how could I utilize this heat and humidity instead of having it go to waste?
I found a little contraption that lets you vent an electric clothes dryer inside. It’s called a dryer vent kit. The exhaust from the electric dryer passes through a plastic box that holds about 5 cups of water. As the vented air hits the water in the container, the small amount of lint that doesn’t get trapped by the dryer’s built in lint filter gets trapped in water. The warm humid air then passes out of the container and enters the house. Keep in mind, this does not replace the built-in lint filter on the dryer. You still need that. So I made the plunge, bought the contraption and set it up.
At first it seemed like it was working great. The humidity levels quickly increased. So much, that we started getting condensation on the windows. But this actually turned into a problem as water started collecting on the window sill, then dripping down the wall. I was walking around with a towel mopping up the excess water. If left alone, this could ruin the drywall and quite possibly turn into a mold problem.
The water within the contain also requires regular maintenance. It gets nasty too. The wet lint cannot be poured down the sink, otherwise it’ll get clogged. Finding a place to set the dryer vent kit while in use is also a problem. Our laundry room is narrow and so it has to sit on the floor. It was constantly getting kicked and knocked over spilling water and wet lint.
After a couple weeks of use, I disconnected the vent kit and re-vented outside. It was just creating too many problems and very messy.
For someone that doesn’t have an outside vent, also owns an electric dryer, and can open a window, I suppose you could use this. But be prepared for a bit of hassle. Too much humidity and opening a window just isn’t an option for us in the colder winter months, and in the summertime I can only imagine it would be way too hot.