I have camped and hunted for years in temps below 32 degrees. However, I went approximately 8 years between having a trailer. When we bought out new TT this past January I posed this same question on these forums to see what if any new suggestions there might be out there; and received surprisingly few answers here.
We live in Alaska, so like you camping in temps below 32, pretty much shuts down anything beyond September. Yet, because there are Moose and Caribou hunts that go on during some of the coldest months of the winter here, I still see a fair share of RVs out on the road during these months. So I drew on my own previous knowledge and experience and started asking around locally. Some things I have done, and tips I have found helpful.
There is heat trace available for your tanks. However, heat trace usually takes shore power or generator. If you find heat trace that will run on your TT's 12volt system, be aware, with the cold temps the batteries will drain fast. A generator is your friend.
With an enclosed underbelly its a pain in the a-- to get heat trace on the tanks.
We don't use the fresh water tank below 25 degrees.
We winterize and run RV antifreeze in our water lines and leave them that way.
I have two 35 gallon portable water barrels with a hand pump for pumping the water out, which I keep inside the TT.
I mix my black water and grey water chemicals with one gallon of RV antifreeze and pour into both the black and grey tanks. During a December hunt when temperatures fall around 12 to 20 below, as we utilize our toilet or sink, we mix a 50/50 RV antifreeze when we flush (we flush with a small bucket).
We wash dishes in a small tub in the sink and dump that water outside when we are done (obviously we use eco friendly dish soap).
During the day while we are out hunting, we utilize an extra 20pound propane bottle hooked up to a "little buddy" space heater and leave that on inside the center of the TT. At night we utilize the onboard heating system set at around 45 degrees.
We utilize a generator for a few hours every night to keep the batteries charged, if we are not at a place where we are plugged into shore power. When we have shore power we also keep a small ceramic space heater inside and leave that running on a low setting.
However, for just a regular camping trip, we have camped for a weekend in temps as low as 22 to 25 without issue. We utilize the trailers onboard heater and that usually keeps things thawed enough for use.
Be advised though, as soon as you are done with the camp trip, as you leave the campground (or whereever), open your low point drains and drain your lines. When you arrive back home or on your way home, get your lines blown out and winterized.
I hope this helps. I have hunted and camped for years in cold temps and even lived in my old 5er for almost two years. I have learned a few new things from fellow campers and hunters here. However, I also err on the side of caution but I utilize my RV all year. On my old Camping units, I was known to de-winterize and re-winterize several times a year. I will continue to do so.
Best of luck to you.
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