If you're looking for the mother of all heat guns, this one is it. With a temperature range of 120 degrees all the way up to 1200 degrees, it's the hottest gun on the market. Airflow is continually variable, allowing you to custom set how you want the gun to work and an LCD display tells you exactly what temperature the gun is operating at. The controls include four customizable preset temperature and airflow combinations, so you can establish settings for the most common ways you use the gun. Maximum airflow is 17.6 CFM. It is electrostatic discharge safe (ESD) for use with sensitive electronic components and circuit boards.
Milwaukee's heat gun is very similar to the Steinel, however it has truly variable heat, which can be set in ten degree increments. Airflow is preset to three different ranges, with the lowest being a "cool down" mode. The temperature range on this unit is from 110 to 1150 degrees and the maximum airflow is 17.6 CFM. The back of the gun is designed to be a wide base, for hands free operation. An impact resistant heating element, housed in a ceramic heat chamber provides long tool life without problems.
DeWalt offers excellent value with this heat gun kit. Not only is it reasonably priced, but you really don't lose anything important over the more expensive units. A built-in LCD display shows the temperature that you've set the gun for, which can be adjusted to 50 degree increments with a temperature range from 150 to 1100 degrees. A cord protector protects the power cord from tearing away from the unit and an innovative "kickstand" supports the unit when using it hands free. The kit comes with a case, fitted with ten different nozzles and tools.
Bosch's unit is the most powerful heat gun on this list. Not only does the heating element put out over 1700 watts of heat, but the blower operates at up to 23 CFM. However, the output is limited to 750 to 1000 degrees. A mechanical air intake regulator adjusts the temperature to the requirements of the job. The unit has a cool air setting, for cooling the tool down after using it while a base allows for hands-free use. The tool comes with a range of accessories for use in specific applications.
Wagner makes paint application equipment, so this gun is created specifically with the idea of using it for stripping finishes with the temperature being adjustable from 750 degrees to 1000 degrees. Like the Bosch unit, this one also has a cool setting, for cooling the unit down safely. One of the nicest things about this unit is it’s been designed with a replaceable heating element. Considering that's the part which is most likely to go bad, that helps ensure that you can use it for a long time. There is an integrated stand for hands-free operation.