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EnzoColorado's avatar
EnzoColorado
Explorer II
Nov 22, 2016

2-way fridge question

We just bought our new TT. I found out the fridge in the TT does not run on 12V. It only runs when plugged into shore or run off propane. The manual says to precool the fridge before heading out for a trip. My question is how to keep the fridge cool while enroute to the destination if it's a long day of drive.

I don't think it'll be a good idea to run the fridge off propane while driving. That just does not seem safe.

What about installing an inverter and somehow connect it to the fridge? Thoughts?
  • We had a three way fridge on our first trailer -- it seemed to steal electricity from the battery while we were driving, so that it did not charge the battery very well. My new trailer has a two way fridge, and I like it a lot better. And yes, most folks (including me) leave the propane on while driving. Not everyone does.

    In severe cross-winds, the flame would blow out -- so I added a home-made baffle made out of sheet metal. It works! It is modeled after the Dometic baffle kit:

    Kit
  • Suspect most people use propane on the road. If you don't want to use propane then just keep the door closed - similar to your stick house fridge (without power) it will be fine for extended periods so long as you keep it buttoned up.
  • We had a 3-way in a pup about 20 years ago. On 12V it did a better job running.g the battery down then it did keeping the fridge cold on a long day. In every TT and our current MH we have kept the fridge on auto and it is always on. AC when plugged in and LP when on the road.
  • We never run our frig when traveling and once everything is frozen and cold, it stays cold for 6-8 hrs as long as the doors are not opened much. When we stop for lunch like in a rest area, we will run the frig on propane for the half hour or so that we are there. We have never seen the temp in the frig go above 36-38 degrees even after a few hours. I would turn the frig on 48 hr before leaving - after 24 I'd load already frozen into the freezer and already cold into the frig. Everything should then be set for travel the next day. I wouldn't go more that 6 hrs without running the frig in some manner for awhile though. Not sure how much longer it will go before warming too much. Do not try to store ice cream when traveling. We are full-time, so the only time the frig is off is when traveling, or defrosting it.
  • We have used propane frigs while traveling for over 35 years. Never had an issue.
  • We've been running propane while on the road since 2007. (First propane/110VAC fridge)
    Just shut it off during refuelings and, so I've heard, passing through tunnels that require you to have it off.

    My brother had a problem keeping the flame lit in his on the road - he added a small baffle between the firebox and the outside vent - it cured the issue.

    A 12V fridge pulls 9-12 amps, so the line between your tow vehicle & fridge would need to be adequately sized, including compensating for distance and connector resistances.

    I've always enjoyed the freedom of running propane on the road.
  • EnzoColorado wrote:
    I don't think it'll be a good idea to run the fridge off propane while driving. That just does not seem safe.


    Pretty well all of us do. ;)