Brilliant. No condensation on windows anymore. I was sceptical it would work as I had been running a dehumidifier and emptying that on a daily basis and the windows still had condensation on them in the morning! Now I dont run the dehumidifier and have reduced the air flow setting from 3 to 2 in my 3 bed house. Humidity now at 49 - 52%
Couple of minor draw backs. I have the heated version the incoming tempered air is still quite cold. Which lowers the temp in the hallway.
Second is the price. £340 is a lot for a large fan and some basic electronics.