I have been using this for a few months, it was easy to install, it was DIY stuff for me, works fine, programs are easy to use. But there is a small design failure in my opinion, the filter for the ventilator is very loose and it is falling very often, I used a tape to fix it, the filter is floating in the gap, there is no stop to hold it tight, unfortunately. I used to have a similar model and never had such an issue with that one.