I often ride with denim bike shorts (keeps the sunburn off the knees),,, in the summer season. So I can feel the fans come on,, both with warm air across the shins,,, and even warming up my Corbin seat pan. It is quite bearable,,, and I should mention that for the importance of good footware/grip,,, I do wear 6" motorcycle boots. In the spring and fall,,, having the fans come on is actually pretty comfortable. Next time I dig into my tupperware,, I will install an amber led on the fan circuit,,, so that there is a visual indicator when they are operating. Simple and cheap,,, and it is mostly because I am curious about how the fan cycles at road speeds,,, when there is such a volume of air moving through the bike, that you can not feel the fans come on,,, and/or hear them above the engine/wind/tire noise. My bike never goes above 3 bars, and that means that the fan sensor must be set to come on between 3 and 4 bars on the temperature indicator,,, Cat'