temp living in RV

If you have a heated hose, you also presumably need to make sure you have a properly equipped hose spigot to connect it to. Typical freeze-proof sillcocks work by having the actual valve back in the basement of the building and then being angled so that the water between the valve and the hose bib can dribble out by gravity. If a hose is left connected, that doesn't work and you can easily end up with more or less damage.

A separate stand-up freeze proof hydrant I think works by draining the water underground when shut off, but I don't know for sure. It might be possible to leave a (heated) hose connected to them without freeze damage.

Anyhow, it seems to me that having a heated hose isn't much use if you still have to disconnect it every time it's not in use. Using the tank and pump is the best general solution for anything other than long-term winter use, and maybe even for that, in my opinion (which is worth every last cent you paid for it, but not necessarily any more).

Found THIS on google.

Husky,

There are two things to do:
1 - As said above, use the tank and pump. This always works and if it doesn't, it should be repaired. The hard part is that after you fill the potable tank, you have to drain the hose and bring it in so the water in it does not get frozen and break the hose when you try to use it later.
2 - Buy an expensive electrically heated water hose. A 25' hose is about 100$us and and only as reliable as its electric supply.

Matt

Fill water tank and then disconnect and empty hose?

Yes, use the pump.