Very good in terms of construction and heats up the bathroom very quickly, but... it is not suitable for small spaces/bathrooms as it VERY easily stops functioning due to "detecting" temperature and stops for safety reasons. (It should be noted that an adjustment/alignment of its temperature was made so that what it "sees" aligns with the actual temperature). It was installed -necessarily- at a distance of 20-25 cm from the ceiling, resulting in it stopping at the slightest change and not starting even after 20 minutes! The result is that the space is filled with steam... something I have not encountered before with bathroom heaters, which are much cheaper than this one. Also, the power of its fan is not adjustable, which would help a lot. I was not satisfied with the product; MAYBE it would perform better in larger spaces.

UPDATE 15/3/2025: Following the above review, the response from the company/representative to it, and the phone communication I had with them, I must say a very big thank you for their -E X E M P L A R Y- service. The team at 'zesta.gr' and personally Mr. Friagkidakis were interested in helping us solve the "problem" and even contacted me several times. The solution was provided with the correct installation of the device, according to the manufacturer's specifications. Since this is a very good and quality product, for those who purchase it, make sure to adhere to the installation specifications. 5 stars for the heater and mainly for the after-sales support from the company/representative in Greece!