The heaters from Hornet Aircraft Heaters are a work of art to say the least. Amazing design in such a small package. I wired both of them to the battery and placed them in the general location where they will be installed for a quick ground test. I turned them on and jumped inside the cockpit and chilled there for about 10 min. At the 5 min. mark I could begin feeling heat through the souls of my shoes which was a good sign, but the heat was pretty marginal. After 10 min, my battery had drained from 11.5V to 11.2V. So about 1 amp drain every 30 minutes which is about right. That means that if my amp draw in flight exceeds the 50 amp alternator max, I'll only have about an hour of heat on my toes before shutting them down to charge the battery. Of course this is all rough estimates at this point. However, I do feel that the heat is minimal and I'm concerned that any serious draft of cold air will spoil all the efforts. The only real way to know is to go flying up high in the cold and check it out. If my feet aren't feeling warmer within 15 min of cold weather flying then I may be wearing hot socks from now on! :)
