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Old 06-20-2018, 11:25 PM   #11
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Join Date: Aug 2007
Location: Minnesota
Posts: 4,490

My first week of travel from Cleveland, OH to Minnesota to Gallup, NM was alway below freezing 24/7 down to a -5F. I boondocked the whole time culminating at 0F in Gallup overnight at a Cracker Barrel before going above freezing in Arizona. It was mostly 20F and below. I had a half tank of fresh water and no winterization. The diesel-fired waste glycol after supplying heat to the water and air exchange was 160F and was grooved into the 40 gallon fresh tank and bundled with outside water lines to heat them. I didn't have heat on the grey and black tanks but added a proportional pink RV antifreeze. The only weakness in the system was the outside shower froze up. I had Advanced RV change the valves to a quarter turn ball valve to fix that problem. I only discovered that because I certainly wasn't going to use it in freezing weather but I had the valve open accidentally and when it defrosted it began spewing water. However, there was no damage. Since my build, ARV has been installing water lines inside the van. They have an option for the black and grey tanks with heating pads. I think maybe anti-freeze might be easier. Before you use the B and G tanks you could add pure anti-freeze to fill the pipes going to the dump valve blades as a precaution. The waste contents will not be frozen with anti-freeze dilution and most likely you wouldn't dump until above freezing weather anyway.

2015 Advanced RV Ocean One Mercedes Benz Sprinter
Previous Class Bs:
2011 Great West Van Legend Sprinter
2005 Pleasure-way Plateau TS Sprinter
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Old 06-21-2018, 12:48 PM   #12
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Join Date: May 2017
Location: New Hampshire
Posts: 14

[QUOTE=Roadtrek Adventuous RS1;74808]OK... tell you think this is important ??

It's a feature on the newer Airstream vans ..... I seriously don't think it would be a retrofit option for most of us... sounds really expensive....

BUT, would this be something you would find desirable for your next Class B????

My Roadtrek RS Adventurous is a three season coach...'s possible for me to easily use it year round since I live in Southern California..

I don't think I need heated water tanks... except for traveling to really inclement weather...and we try to avoid this.....

We have a 2015 Winnebago ERA 70A. Outside temps below 45* the heater runs all night. insulation anywhere in the chassis walls! What really helped was Reflectix Insulation on the interior of the windows. As long as air temp is above 40* I would feel safe. Traveling below that temp I will risk freezing. At hwy speed the fluids due to wind chill effect below 32* it will freeze fast!

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Old 06-21-2018, 02:19 PM   #13
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Join Date: Mar 2012
Location: Maryland
Posts: 873

I have it. I donít consider it important. It is just a nice to have option.

2013 Airstream Interstate Lounge EXT on 2012 Sprinter 3500 170Ext
Formerly: 1973 Dodge B300 DIY pop-top conversion
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