I need some advice. I have de-winterized my trailer and I have used it on a couple of trips this spring. Naturally, the weather has decided to turn cold again. The overnight low on Thursday is forecast for 32 and 30 for the overnight low on Friday. Last time we camped I emptied the fresh water tank and opened the low point drains for the drive home. Am I in any danger of damaging my plumbing and what steps should I follow to minimize the risks of damage? Now I know the best thing would be to winterize it again, but I would really rather not do that. Thoughts?

Yes, you risk damaging the water lines. The risk is directly proportional to how cold it gets for how long. Even 30° for one hour can freeze those tiny lines. Will that damage them? Who knows. How about providing some supplemental heat, or blowing out the lines but no antifreeze? Or just wing it. The risk is pretty low, but the other side of the coin is it could result in hidden damage that causes big problems like delamination down the road. No easy answer. Easy for me to say take a chance cause it ain't mine to pay to fix down the road. So do you feel lucky today?

With the faucets and low point drains all open you should be fine at those temps.

KandK, If you can put any heat on inside the coach, it should be just fine. If you can't, opening the ALL the taps and the low points is a good start.Anything built after the early 80's has all plastic lines. They can freeze and not be harmed, but the metal parts are all at risk. Heat is cheapest and fastest.Matt

troubledwaters wrote:Yes, you risk damaging the water lines. The risk is directly proportional to how cold it gets for how long. Even 30° for one hour can freeze those tiny lines. Will that damage them? Who knows. How about providing some supplemental heat, or blowing out the lines but no antifreeze? Or just wing it. The risk is pretty low, but the other side of the coin is it could result in hidden damage that causes big problems like delamination down the road. No easy answer. Easy for me to say take a chance cause it ain't mine to pay to fix down the road. So do you feel lucky today?:hReally??Seem it takes at least a couple hours to make small ice cubes when the freezer is a zero or even -10 degree F.Part depends on daytime temps, if daytime gets to high 40's or low 50's shouldn't be an issues even down to about 28 degrees. If you look at hourly temps likely only below freezing for about 2 to 4 hours, the trailer is a heat sink, and will hold the daytime heat.

freezing temps on Thursday | Good Sam Community

troubledwaters
Explorer III
May 16, 2017
Yes, you risk damaging the water lines. The risk is directly proportional to how cold it gets for how long. Even 30° for one hour can freeze those tiny lines. Will that damage them? Who knows. How about providing some supplemental heat, or blowing out the lines but no antifreeze? Or just wing it. The risk is pretty low, but the other side of the coin is it could result in hidden damage that causes big problems like delamination down the road. No easy answer. Easy for me to say take a chance cause it ain't mine to pay to fix down the road. So do you feel lucky today?
Dutch_12078
Explorer II
May 16, 2017
With the faucets and low point drains all open you should be fine at those temps.
Matt_Colie
Explorer II
May 16, 2017
KandK,

If you can put any heat on inside the coach, it should be just fine. If you can't, opening the ALL the taps and the low points is a good start.
Anything built after the early 80's has all plastic lines. They can freeze and not be harmed, but the metal parts are all at risk.

Heat is cheapest and fastest.

Matt
2oldman
Explorer II
May 16, 2017
heat
rhagfo
Explorer III
May 16, 2017
troubledwaters wrote:
Yes, you risk damaging the water lines. The risk is directly proportional to how cold it gets for how long. Even 30° for one hour can freeze those tiny lines. Will that damage them? Who knows. How about providing some supplemental heat, or blowing out the lines but no antifreeze? Or just wing it. The risk is pretty low, but the other side of the coin is it could result in hidden damage that causes big problems like delamination down the road. No easy answer. Easy for me to say take a chance cause it ain't mine to pay to fix down the road. So do you feel lucky today?

:h

Really??

Seem it takes at least a couple hours to make small ice cubes when the freezer is a zero or even -10 degree F.

Part depends on daytime temps, if daytime gets to high 40's or low 50's shouldn't be an issues even down to about 28 degrees. If you look at hourly temps likely only below freezing for about 2 to 4 hours, the trailer is a heat sink, and will hold the daytime heat.
hone_eagle
Explorer
May 16, 2017
I know water freezes at 32 but your lines will be fine ,it takes a bit colder (mid 20's)and a strong wind to swell/burst the lines.The water is not pure and residual ground heat will keep them from freezing at at all.

the temps will only be below freezing for a few hours I bet.
Sandia_Man
Explorer II
May 16, 2017
As you have outlined the scenario I say you are OK. We camp plenty in those temps, even into the teens overnight, as long as it gets above 45 or so during the day we haven't experienced any issues and we don't have a heated underbelly. On the other hand, takes just a few minutes to pump in some antifreeze. Your call, your peace of mind.
BB_TX
Nomad
May 16, 2017
30 degrees for a 2-3 hours is not going to hurt you. Lines probably will not even freeze. Certainly not a hard damaging freeze.
troubledwaters
Explorer III
May 16, 2017
rhagfo wrote:
troubledwaters wrote:
Yes, you risk damaging the water lines. The risk is directly proportional to how cold it gets for how long. Even 30° for one hour can freeze those tiny lines. Will that damage them? Who knows. How about providing some supplemental heat, or blowing out the lines but no antifreeze? Or just wing it. The risk is pretty low, but the other side of the coin is it could result in hidden damage that causes big problems like delamination down the road. No easy answer. Easy for me to say take a chance cause it ain't mine to pay to fix down the road. So do you feel lucky today?

Really??

Seem it takes at least a couple hours to make small ice cubes when the freezer is a zero or even -10 degree F.

Part depends on daytime temps, if daytime gets to high 40's or low 50's shouldn't be an issues even down to about 28 degrees. If you look at hourly temps likely only below freezing for about 2 to 4 hours, the trailer is a heat sink, and will hold the daytime heat.
Reading comprehension 101.
pianotuna
Nomad III
May 16, 2017
So freezing causes delamination?????

If the OP wishes to be careful he can leave the thermostat set to the lowest possible temperature.

Realistically even an RV that is not designed for cold weather use is fairly safe at 25 f (-4 c), so long that is a low temperature for the day and day time temperatures are well above freezing.

troubledwaters wrote:
Yes, you risk damaging the water lines. The risk is directly proportional to how cold it gets for how long. Even 30° for one hour can freeze those tiny lines. Will that damage them? Who knows. How about providing some supplemental heat, or blowing out the lines but no antifreeze? Or just wing it. The risk is pretty low, but the other side of the coin is it could result in hidden damage that causes big problems like delamination down the road. No easy answer. Easy for me to say take a chance cause it ain't mine to pay to fix down the road. So do you feel lucky today?