After a year of use, I can say that this heater is a beast. I used it every night in a 70 sqm space with poor insulation, and it never let the temperature drop below 20 degrees, even in unfavorable conditions outside. I think the fan it has doubles the heating efficiency. It emits such hot air that you can't even put your hand in front of it. It has a smell for the first 2-3 hours of operation, but then it disappears. The fan broke at some point, but it was repaired as it was still under warranty. It consumes 7 minutes per hour + VAT at today's electricity prices in a private company. I am very satisfied!!