Heater-winter

tbred wrote:
If you truly don't have any long hard freezes, you may get by just blowing out lines between trips. You could also dump some rv antifreeze in black and gray tanks to protect the valves and wait to dump until well above freezing so you don't force frozen valves.

That's what I'm thinking.

If you truly don't have any long hard freezes, you may get by just blowing out lines between trips. You could also dump some rv antifreeze in black and gray tanks to protect the valves and wait to dump until well above freezing so you don't force frozen valves.

Would it be possible to get heated storage with in and out ability? It might cost a lot, but no surprises or ruined plans.

Yes, my drains do hang down about 4 inches.

Hard to make generalizations without know more about your RV and how it's equipped. With electric tank heaters and valve heaters there should be no need to winterize but without those features you COULD end up being unable to dump holding tanks under some circumstances. Chances are your plumbing located above the floor or inside an enclosed belly, would be safe from freezing with some electric heat inside the trailer. Each case is different so use some common sense and think the problem through. It might be 50 degrees at one spot inside the trailer but if it's 28 where the water is, it'll freeze.
Good luck / Skip

Are your dump valves and dump dains out in the open? If so they are subject to feezing. 28 degrees isn't too bad but it is below freezing.