I recently bought this from appliances direct:
www.appliancesdirect.co.uk/p/pd45e/electriq-pd45e-dehumidifier
They sometimes have 2nds, and I think I paid closer to £200 for a B grade 2nd. We are renovating a home and currently living in a single glazed, static caravan, hence I wanted a large humidifier. Our van is a small, 2 bed, but 1 bedroom and the bathroom is always closed off. So, the dehumidifier is only working in 1 small bedroom, with a galley kitchen and lounge area. Its FAR from a large house with multiple rooms it claims to exract humidity from!
The humidifier is loud, even on low and there is no way I could have it in the bedroom whilst trying to sleep. In anther room or wiht the door closed, its fine. Even on high, for a few hours, the windows are ALWAYS covered in condensation and the curtains damp. The water chamber does fill up, so it must be extracting some moisture. There is a handy, handle to lift the water bucket thing to empty it, and there is a function to attach a pipe so you dont need to empty the chamber at all.
I have found that a karcher window cleaner is FAR better are removing condensation from the windows. Also, keeping a window slightly open, even for a short time, reduced the condensation inside more than the dehumidifier.
It does work, because there is water in the chamber, but I'm really not sure if it just needs to be left on most of the time to be more effective? It does have a temperature gauge, and also tells the amount of moisture inthe air apparently.
Let me know if you have any questions at all.