Wanted: dehumidifier, urgent!

[rubber duck]

Hi, we need to urgently dry out mouldy walls in our children's rooms while we sort out various leaks and sources of damp. We may end up buying a new dehumidifier but would first like to see if this works and if we want to keep using this once we sort out the mould. So if anyone has one for cheap we would be very grateful. Thanks for reading!