We bought the heater for a free-standing in the bedroom baby changing table. The radiator was build just over 15 minutes alone. On the first day after the start he stunk, we have it only once 3 hours. Run non-stop, ..... aired the room while extensively after he no longer stunk / no fumes. If one puts him right to the top, the heat distribution is optimal. He has 3.Heizstufen. Already 5.Sekunden after turning the heat felt. The device should be used only while on the terrace, Top is suitable for our purpose but :-) We are very satisfied.