Filling water tank in cold weather

enblethen wrote:
Why not just put in a small amount of water then add when you get to warmer weather?
You should not have any problems with as planned.

Putting a small amount of water in the tank is worse than a full tank. A small amount of water will freeze quicker than a large amount of water.

Why not just put in a small amount of water then add when you get to warmer weather?
You should not have any problems with as planned.

I don't think you'll have a problem either especially once the water begins to move around when you're underway. If it were me, I might run my furnace for an hour or so late Friday. If you do that, it's doubtful that your actual water temp would even approach freezing at those temps, let alone freezing solid, which is what you want to avoid. As mentioned and you've indicated, don't run the pump.

You shouldn't have a problem. Your water will be well above freezing when you fill, and the temps will only be below freezing for maybe 8 hours at the most. The most likely spot to freeze is the line between the water tank and the pump, so don't run the pump until temps are warmer.

I doubt 27 will be a problem one night for your tank ... HOWEVER, I usually put a 60W light on a service cord in the wet bay to help keep the temperatures up a bit above freezing. My RV has furnace duct-work into the wet bay so I have the alternative choice of just leaving the furnace on, too, to keep the tank area above freezing.