how low past 32 can it get before the water lines under the van go before they would freeze. would like 27 at night and back up two 45 in the day be ok. have a 2000 lesure travel
The answer to this when I asked an RV tech was two days at 28dF to 32 at night is OK as long as the days go well above freezing. More than two days like this and you better winterize.
So you are right on the edge. Problem is the forecast says 27 or 28 and it gets to be 22 that night and you have costly repairs from frozen pipes and valves.