Product review (4 stars): Works great, recommend to save energy and add moisture in ...
Works great, recommend to save energy and add moisture in home. Easy to swap from indoors to outside airflow. Sometimes doesn't stay in the up (inside) position, but mine is jammed between the drywall and a stud, so it works for me.  Need to clean the lint screen every load, but not the fault of the device. So glad I got it.