Heater options....

[DarylW]

Howdy
My 1953 AC 520 ‘new’ to me, has had its heater pulled out. Can anyone direct me to info about heater options? I was hoping someone has tromped down the path of getting approval for something that doesn’t include aviation fuel!
Thanks much
Daryl Wilkins
N11L
#53-109

[Adam Frisch]

Don't think anything else was approved for them. And now, with so few still flying in the last 20 years, there's no incentive to STC anything else. I never used my Janitrol myself as I was always terrified of it being in tail. I remember one trip across the rockies in full ski suit at altitude as it was so cold!

If I were you I'd install something automotive that's removable before annual, if you catch my drift...

[DarylW]

 Understood! 
Thanks Adam

[donv]

I always found those Janitrol heaters a bit scary as well. But in a normally aspirated twin, there aren't a lot of other options.

[DarylW]

The Alde furnace in my Airstream trailer works great and would adapt well to aviation use... electric source for heat, glycol as heat transfer liquid, non flammable. A modifiable concept to any twin.... could be genius....