Auto-Sleepers Frostat Water Tank Heater

Would be intested to hear how the Frostat compares to the CAK TANKS heater and details of the formers specification and how its operates in practice. In particular can it be left switch on all the time whilst connected at home to mains electric to spring into action when temperatures drop.

Wearsider wrote:In particular can it be left switch on all the time whilst connected at home to mains electric to spring into action when temperatures drop.

I don't think any type of tank heater could be used in that way, because if there's water in the tank, there will almost certainly be water in the adjacent pipework which would not be protected.

Personally I don't think there's any really good alternative to a complete drain-down when the van is not in use over the winter (unless you're lucky enough to have a big enough garage!).