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paulnptld's avatar
paulnptld
Explorer
Nov 11, 2013

Off-grid Winter RVing Question

Hi everyone,

I have a 21 foot Toyota Dolphin that I'm planning to take on long ski weekends on Mt. Hood. Typical nighttime temps are in the low teens. Sometimes (thought rarely) single digits. Daytime highs are usually in the mid to high 20s.

Here's what I have to work with so far: A 2100 watt inverter generator with remote start, an 18,000btu Mr. Heater Big Buddy on a dedicated 20lb propane tank, a regular blower type propane heater operating off a separate 20lb tank, and one 12v deep cycle battery. BTW, the resorts on Mt. Hood allow boondocking for a few days in their parking lots.

I know my wife would appreciate it greatly if she could use the RV's shower, toilet, etc. after a long day on the slopes. Assuming I have just one battery and want to leave the generator off at night, what can I do to make this happen?

50 Replies

  • WAY WAY WAY too much heater maximum capacity. 5,000 would do fine. The issue is air circulation and keeping exposed liquid tanks from freezing. If the tanks are exposed you are basically screwed unless you find a way to keep them from freezing. This is why newer rigs have basements and enclosed tanks.
  • Sounds like you got the keep warm inside covered. But your water lines will freeze. Many MH's the "heated tanks" are nothing more than splitting the heater vent in the back bedroom in half and sending that heat down to the sewage bay.:R

    For the DW:
    Get a porta-pottie. That's what I used on the way down south when I had to leave with a winterized MH. I don't do gas stations when traveling!

    The toilet is 'exactly' like the one in your RV. You can buy them with different size tanks. Depending on how long your stay is. Then dump it at a gas station toilet or dump station.

    The holding tank cassette underneath has a real slick swing tube for easy dumping into a gas station toilet or CG dump station. Clean, absolutely no smell. And fits the bum just like your RV toilet.

    You can pick up the average size tank one at any Walmart for 60 bucks.
    Here's the link for all the models from Thetford.

    http://www.thetford.com/HOME/ApplicationHome/RecreationalApplication/tabid/85/Default.aspx

  • I'm hoping the Big Buddy does the trick in those temps without having to use the RV's blower heater. The Mr. Heater unit is good for 18,000BTUs and can be used safely indoors. On a 20lb tank, it should easily last an entire weekend.
  • GENECOP wrote:
    Are your tanks heated? Those temps will freeze your fresh water....Or your tanks must be in the heated envelope.....
    None of the water lines appear to be heated. Since I'll be off-grid, what would I need to do to keep the tanks and lines heated for up to three days? How much of a battery draw would it be?

    Thanks for chiming in...
  • The blower type LP heater will draw your battery down in a few hours...
  • Are your tanks heated? Those temps will freeze your fresh water....Or your tanks must be in the heated envelope.....
  • GENECOP wrote:
    What is your water situation....? Fresh water tanks, waste water tanks?
    ...and a six gallon water heater.
  • GENECOP wrote:
    What is your water situation....? Fresh water tanks, waste water tanks?

    20 gallon grey, 20 gallon black, 30 gallon water.
  • What is your water situation....? Fresh water tanks, waste water tanks?