The AeroTherm heater supplies 5,000 BTU's of heat at 190 degrees farenheit to the engine compartment.
It then draws the same heat out of the compartment back through the heater, constantly increasing the heating temperature.
The AeroTherm heater has been tested on the cold- soaked engine of a Cirrus at 0 degree hangar temperature. The compartment immediately reached 100 degrees and in three hours the engine cylinders were 75 degrees. After 3 hours the entering air temperature was above 200 degrees with the inlet temperature reaching 100 degrees. It can be applied on most other aircraft.
