Stay away!!!!! Construction quality is not even there.......15 square meters room and it heats it up to the maximum for a little while because then it starts turning off every 4 minutes and then turns on again and turns off again and turns on again and turns off again...... as for the stairs, 750 and 1250 watts are good for a kiosk...not more....wasted money!!!!!!! Don't make the mistake!!!!

Function 2000w. It is possible to overheat and after about 30 minutes it simply turns off and then turns on again and then turns off again.
Function 1250w. Possibly the only useful function that manages to warm up a room of 11 square meters without any problem.
Function 750w. Simply useless, whether you turn it on or not, it does nothing.
I don't know if it's faulty, but for the 100 I paid two years ago and it has probably worked for only 150 hours, it's not worth it at all. Look for something else or maybe a heater

Quite mediocre I would say after at least 1 year that I have it, comparing the difference in heat it offers compared to a United UHM 782 which is much more powerful. Therefore, I have to say that it is not worth its money and there are other more economical options after the research I have done. And this happens because even at full power, which is 2000W, it heats up for a while and then turns on and off depending on the temperature, while the United one I mentioned heats up consistently and is noticeable. Significant difference after the test I did, so keep that in mind, read the reviews!

Wasted money. Supposedly for 30 sqm. If you put 2 (which I bought) in 10 sqm, it might still not work for sure. Stay away..

Unfortunately, I am completely disappointed with the performance of the product. It only produces a little heat at 2000 BTU, and at 750 and 1250, it does nothing. I am using it in a 25 square meter space, and it has nothing to do with what I expected. It is suitable for 10 square meters, not the 36 that is mentioned. I do not recommend it