[bcrvman]

Originally Posted by JamesD

I've had about every kind of cold weather issue there is. It was -9F a few nights back without windchill. -24F with. Yup, the hose from the water tank froze.

Check these in order. Easy way is to look for leaks.
1.If the hoses freeze, the ice can force them off of fittings... even if you have hose clamps on them.
2. If the pump freezes, it can ruin the innards. The check valve, the little diaphragm piece, and even the pressure sensor. If you don't find leaks, look at this.
3. It can split hoses (not likely, that stuff deals with it pretty well unless it's old).
4. It can split fittings... like to your hot water heater. It usually requires more than a cold night to do that though.

WOW, those are really cold temperatures., I live in Canada on the west coast and we had everything freeze up this winter (coldest ever) at -10C. That is +14F so I can not relate to the temps you are talking about. The underground supply lines froze up since they didn't bury them deep enough so we switched to internal tanks and they froze up even with 12V heaters on, 1500W heater blowing hot air into the belly at -10C/14F. Plan C was 4 of the 3 gal water jugs filled in the owners house.