Water heater in RV's

There are several water heating options available online at Camping World. We have a 6 gallon Suburban water heater in our rig and have never run out during our showers. Quick recovery as well, plus we use the Oxygenics showerhead that uses less water while providing an invigorating spray.

Mik68 wrote:
The water heaters vary in capacity and I'm told once the hot water runs out, that's it!
Are there instant water heaters made for RV's?
Reading back, I realise this must seem like a stupid question, but just thought if we can have em on our houses, why can't we have them on our RV's? :h

Simple answer, YES there are insta-hot systems for RV's...

Tim