With close to 60,000 miles on our 2016 FC 25FB camping in extremes of desert heat and currently in Colorado snow, I have to say that people fear this too much. My takeaway is that this forum has plenty of great advice for winter camping and it can be done comfortably.
When we feel the temps are too cold to tow in the cold, we use our Viair to blow out the lines (winterize) followed by a gallon of RV antifreeze using the bypass connection under the refrigerator. We can do it at any rest stop in 20 minutes. Otherwise we keep the water tank full and only use the grey when we know we can dump. We donít connect the water hose but instead use the fresh water tank and keep showers short.
AS isnít a four season but most of us just want to extend the shoulder seasons. This year weíve used it year round. Best advice I have for winter use is:
- keep propane topped off. You can use a regular rest/walk/stretch break to stop at a roadside KOA and refill your tank We never go below 1/2 tank of diesel or one tank of propane without looking to refill and we carry 5gal diesel that almost always comes home unused.
- get a 200w Lasco heater and keep it running in the bathroom as it will keep the bedroom side warmer and the bathroom comfortable for only 200w of draw
- install solar panels and skip the lithium for now but switch to 6v AGM batteries in tandem. AM Solar can get you sorted out. This is what allowed us to boondock for a week at a time and is crucial for winter camping. Of course, we also have a backup Honda 2000 in case we get days of overcast. Winter camping is about keeping warm within your battery and LP constraints.
- Big Buddy portable propane heater to get the interior up to temp and then switch over to the main furnace to maintain temps and keep the trailers belly warmish. Saves on main tank LP and is a good emergency backup when (not if) you blow your furnace circuit board and have to limp to a dometic service outlet for a replacement. As an aside, itís a trip saver to carry a spare.
- if you have electric hookup, then a mattress warmer and or electric blankets letís you keep the thermostat at 59 or so, thus conserving LP.
- we use a goal zero 2000w to keep the truck engine heater warm and extend the trailer battery range during low temps or extended overcast weather. It recharges from a solar panel on the roof of the pickup and/or 12v
adapter while driving
- We carry water in 2.5 gallon containers for daily use when the trailer is winterized as they are easier to lift and store. Boil water and you can have a modified navy shower
Hope this helps