The heating capacity of the heater is sufficient for this class, the noise is relatively high. The 4 stages the 'off' position must be counted, however. The heating levels 1 and 2 only changes the heat output, the fan speed remains the same. The tilt safety switch does not work, the fan runs in all positions. I screwed the housing, the switch is not at present. Here is advertised with safety components which are not present. Therefore, only one point. Who puts on safety no value for the fan is quite usable.