Still no heat from the DeLonghi heater. In a 15 sqm room on the top floor in the northern suburbs, where it is cold and humid, with 2 1100 watt bulbs, it struggles. You have to leave it on for 45 minutes to break the cold, to break it. It's like a small radiator with the 2 bulbs. It heats up to a maximum of 30 sqm on the 4th level, under the conditions I mentioned. For northern Greece and lower temperatures with humidity, it should definitely be running at full power, meaning at 2200 watts.