I live in a 300 year old cottage which was never really warm in the winter - the first morning after installation I walked through the house in my PJ's, toasty warm! Easy to use, instant warmth when a boost needed on the coldest of days. Installation was straightforward and when one of the heaters arrived dented they installed it temporarily so we could get warm (it was November) and brought a replacement very soon after. Highly recommended. My only word of caution is that the 'conservatory' heaters (which we have in two of our rooms, so they fit under the window) are deeper than the other heaters, which I am sure the sales person had informed us of, but it was a bit of a surprise when they were fitted. This means they do encroach into the room more. However, this is by no means a complaint, just make sure you know what you are getting. (I confess I was a little disappointed at first because of this, although I don't even notice it any more.) I had a completely blank canvas here, after the cottage was gutted by fire, but I am very pleased I chose these heaters.