Product review (3 stars): Updated Review -- better than I first thought once I lowered my expectations
Okay, to be fair, I am editing my original negative review. I bought this heater because it looks a lot like the one I had a couple years ago in Germany that was really great. But with this one, I discovered that the fan is very loud and rattles when in its squat position. It does not heat up the room/apartment nearly as well as the one I had in Germany. However, that said, I have now tried several space heaters and they are all weaker than the one I had in Germany, so I am thinking this is due to the 110 voltage here in the US.

Unfortunately, if you buy from HowPlumb, you loose the original shipping charge and have to pay an added shipping charge out of pocket if you want to return it, so there is more risk if the heater is defective.

Because of the rattling, I originally  wanted to return the heater, but it was gong to cost me another $13 in addition to $7 or so I already paid for shipping, so I reluctantly decided to keep it. When I plugged it in again, I discovered that even though it does rattle when it sits in its squat position, it does not rattle when in its upright position and is nice and quiet. It also puts out decent heat compared to other US space heaters I tried. It does a decent job for e.g. locally heating up your legs while working at a desk. For this, it is actually good and better than the "whole room" Voranado I tried, which neither warms up your immediate environs nor heats up the room (small apartment living room) to any significant degree. So, now, after all, I am glad I bought this heater as a supplement to my base boards. I would now recommend it if the company changes its shipping cost policies or if it is sold directly by Amazon with free shipping and returns.