The panel itself gets extremely hot, burning hot, to the point where you will scald yourself if you touch it for more than a couple of seconds. The room however, does not get warm. I bought a large Boldr Kelvin, and positioned it to the left of my desk with a clear line of sight, so I could have the panel heat me directly. Even on the maximum boost of 40 degrees celsius, left on for the entire day, I could not feel much of the heat from the panel, and the ambient room temperature increased by only a single degree, which frankly, is as likely to have been a change to the outdoor temperature.. My room is not especially big, less than 4x3 metres with ceilings of 2.3 metres. I have run tests over multiple days and nights to see whether the panel makes any difference to the room temperature, and unfortunately it does not. I ran the panel during the course of a night and it nudged the room by 0.5 degrees C - an imperceptible change. As a product sold as a heater this is obviously beyond disappointing. I have emailed tech support to see if they could help troubleshoot, but they have not replied in days after asking for my room measurements. Don’t buy, go get a Dyson heater instead.PS: I tried leaving this as a verified review on Boldr as they invited me to do so, but their website doesn't let you post one.. a little suspect.
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