Cold Snap

Just came in the house from prepping my trailer for the night. I turned on the furnace to 40 degrees and opend the cold faucet in the kitcken. I also turned on the water heater, and opened the low point drains. I am not worried one bit and it is predicted to get 20 out tonight.

Like others have said.You are fine..I wouldnt even run furnace.Unless your below 25 all day.Your prolly talking a few hours at night at 25 then sun comes out and warms above 32 quickly.It needs to freeze solid .. Dont worry.Run furnace if it makes you feel better.

This happens to me every yr at least once after I dewinterize.Never a problem yet.I open all faucets and lower drain points.Throw some antifreeze in the traps for further piece of mind.

Look at this way to cause issues the water has to freeze hard!
Do you make ice cubes in your RV freezer? Just how long does it take to make ice from water that is likely 50 degrees when it goes into the trays???
Our freezer registers -10 most of the time, water still takes a several hours to freeze. so if your trailer gets up to say 60 inside during the day, do you think it gets below freezing in the trailer over night at 25? You should be good for a couple of nights IF daytime gets back to the mid 50's or 60's, and the temp doesn't drop like a stone at night.

I also do 40 degrees when the weather is cold. :)

25 is not bad. Setting your furnace to 55 will give you zero problems. Last night we stayed in Fort Hall, ID. It was 18 and our furnace was at 60 (because we were in it).....no problems at all.

Set mine on 40, won't be cold enough long enough to hurt it. At least here.

Might even want to run a small fan to help circulate warm air.

Lyle

You're good. Several other similar threads going right now too if you want further information.

You should be good running the furnace at 55. It will probably not stay that cold during the daytime, so all should be good.

I would leave cupboard doors open, that contain water lines. With the pump shut off, you could also open all faucets, to allow room for expansion.

If you wanted, you could open the low point drains as well.

Jerry

I think you're fine. Turn up the heat a little more and open the cabinet doors to let more heat to the water lines and tanks. We did several nights at about 22D without a problem.

Bill