Moved into our bungalow in 1989 and found we got terrible condensation. After a couple of years trying various solutions without much success we heard about Nuaire and had one of these earlier models installed. A basic model with just 2 settings but for 25+ years the house virtually condensation free (only if I forgot to go into loft and put it on higher setting for winter) After all these trouble free years the fan started making noises and I switched it off.The condensation returned! Got a quote from Envirovent for installation of a similar unit for £1300! Fortunately then found this site and product. Just fitted it and so easy, especially as it just replaced the existing unit. Lighter than the earlier model and now with 5 settings that can be easily reached on the difusser on the hallway ceiling. Her'shoping for another trouble free 25 years!