I will be honest, I didn't expect this to work as well as some of the previous reviews, It arrived quickly and well packaged, came with good instructions, fitted and up and running within an hour. My house is a solid brick construction and has always suffered with heavy condensation to the windows. The unit is quiet up to speed setting 4 of 6. During the very cold days the unit will blow out cold air from the loft but its not too bad as its heated a bit to take the edge off. It took only two days for my house to be completely condensation free. An excellent buy I'd recommend this to anyone suffering damp and condensation issues.