Rated current
The current consumed by the heat gun during normal operation. This parameter is useful primarily for assessing the load on the mains that occurs during the operation of the unit and organizing the appropriate connection. In particular, the rated current of the fuse installed in the connection circuit cannot be lower than the total rated current of the connected load — otherwise, the power will be turned off. Heat guns (primarily electric, see "Power supply") are quite high consumption consumers in terms of current.
Power consumption
The power consumed by the electrical components of the industrial heater during operation.
This parameter allows, first of all, to assess the load on the power grid and the suitability of the available power for the normal operation of the unit. It is relevant for all types of modern industrial heaters (see "Power supply"). However, it is worth noting that in some electric models, the power consumption is indicated for the ventilation mode. In this mode, the heating element is not activated, and the power consumption is extremely low — a few tens of watts. In such cases, the total power can be estimated from the maximum thermal output (see above) — in electrical models, these parameters practically do not differ from each other.
Max. operating time
The longest time during which the industrial heater can work without interruption.
The value of this parameter depends on the power supply (see above). So, in diesel models, the operating time is usually indicated on one full tank, without refuelling. Note that this implies operation at the lowest power, with minimal fuel consumption, and in optimal environmental conditions. Therefore, when choosing a diesel heat gun for this parameter, it is worth taking a certain margin, or better, separately calculating the operating time at the highest fuel consumption: for this, the volume of the tank (see above) must be divided by the maximum consumption. If we are talking about a gas or electric model, then the maximum operating time usually means the time during which the unit can work without overheating.
Regardless of the type, the long maximum run time provides additional convenience when working with an industrial heater. At the same time, it does not always make sense to pursue the maximum value of this parameter: in fact, the need for continuous heating for a long time occurs quite rarely. In addition, many diesel models allow refuelling right during operation (and in others, the refueling break usually does not exceed a few minutes). Therefore, it is worth specifically looking for a heat gun with a long time of continuous operation only if such a feature is fundamentally important to you.
