Heating space between hulls

[Jim and Chris Neuman]

Living on the Northwest coast of Washington we rarely get temperatures low enough to cause freezing issues while in winter storage.  It does happen though and the potential for freezing damage does typically raise its head a few times each year while during the winter months.

I have been giving some thought to the installation of an electric heater designed to keep warm air moving between the hulls when temps drop into the 10's & 20's.  A small, high quality electric heater permanently installed which draws in cabin air and routes it through areas between the lower hulls where plumbing and other temperature sensitive components live could serve the dual purpose of protecting trailer components from freezng and help keep things warmish and dry.

I understand this system would only be functional while on shore power.  Anyone here designed and installed such a system?  

[theOrca]

I did. It should be findable as I posted pictures and instructions.

Essentially I opened the third port on the Dometic heater and hard ducted it directly across the rear of the trailer. Turned 90 degrees forward and installed a flow adjuster right after it reentered the underbed area. I placed a diverter at that point, and sent part of the warm air directly down under the drivers side bunk. I also installed a 3" flex line running forward all the way to the forward dinette seat. I have been in minus 18 degree F temps in Republic, and the minimum temp under either bunk was 38 degrees. My friends trailer water froze every night by 9 pm. It is tight, but doable!

The electric option just would not work for me as I use my Olly as an Elk Camp Cabin. I wanted an extra propane heat load, not an extra electric load.

Edited 2 hours ago by theOrca