[stevehull]

Memphis has it - put the heat tape on the pipe, then insulation over that. There is no better or more "efficient" resistance heat than resistance heat tape. I made the mistake of coiling heat tape around PVC pipe - with insulation over it (melted the PVC . . . )

At the plug end of the heat tape is the thermostat. Typically this is about 38F or so. I would "bury" this next to the water pipe and then insulate around it so that it is picking up the pipe temp, not the outside temp.

And the crawl space would be best in your climate.

Trickling is fine, but then you can easily overload your drain field - especially in the winter with very low evaporation.

Bottom line - heat tape is the way to go.



Steve


Steve