SonexBuilders.net

Has anybody tried using something like this 12V RV-type heater with an airplane like the Sonex? Seems like it should work. Not sure how much of your electric capacity it would use though.

http://www.rvsupplywarehouse.com/product/detail.cfm/pid/3084

But still, easier to install than dealing with muffs, SCAT tubes, firewall holes, etc.

Just a thought.

It can't be more than about 150W. If your cockpit is tight enough to heat with a light bulb or two, then try it - but it will suck a lot of power (at least 10A, probably 15A) for not a lot of reward.

I agree, that baby will suck a lot of juice (amperage) out of your battery.