J Cole, O'Fallon IL, Cirrus SR-22GTS

After doing a lot of research on aircraft engine heaters, I came to the conclusion that the AeroTherm heater was my best choice and the only unit that met all of my purchase criteria:  effective, lightweight, portable and inexpensive.  I had decided that I wanted an electric heater and, since I fly a variety of aircraft, I needed a unit that was not permanently installed.  I like the fact that the AeroTherm re-circulates heated air throughout the engine compartment, ensuring that the entire engine is heated evenly, including the oil.  And with three different temperature settings and a built in thermostat, I can tailor the heater output to my specific needs on any given day.