My short review as I have only been using the heater for about a week. The installation was easy and build quality seems very good. We will see how it affects my electric bill but as far as effective heat it seems to work well. I live in Northern Idaho in a 110 year old home without central heat. The master bedroom is 110 square feet and with outside temps in the mid to high 20’s the little heater maintained bedroom temps at a comfortable 65 degrees. Silent and effective. After I receive a few utility bills to see how much power these use I will most likely buy a couple more. So far I see nothing to complain about.