Condensation on our bedroom windows was very bad having to use towels in the mornings to wipe them off, i tried everything from trickle vents to condensation egg traps on the window cills a humidifier on the landing running most of the night that did help slightly but you had to put up with the background noise of the unit running, i put into google condensation cures yet again ! and the webpage for i-sells.co.uk came up with the Nuaire Drimaster after reading the reviews i took the plunge and purchased , the unit arrived within 3 days great delivery service , i fitted the unit on Friday took about 2hrs very easy with basic diy skills the template cut out for the ceiling is a great help finished about 4pm fitting the unit Saturday morning NO CONDENSATION not a drop unit is set to level 3 you cant hear the unit at all as the fan is suspended in the attic Thank you i -Sells ist class company in every aspect