Considering buying one. We dry a lot of washing inside-1 year old and live in Scotland! Dey outside when we can but those days aren't always that regular. Have a tumble dryer but a lot of stuff doesn't seem to be able to go in it and a few things have shrunk.
Have a modern house and doesn't appear damp from washing but wondering if it is but not seen and if it's not great for the house and we should get dehumidifier.
This thread is a bit old now, but if you've landed here looking for recommendations, we've recently updated our best dehumidifiers round-up, full of products tried, tested and recommended by Mumsnet users.
We hope you will find this useful.
MNHQ 
Is it worth the investment?