[Reldma]

I need to replace the hot water heater because the lining is coming lose, but did not get to it before I covered it this fall. My question is! Is there a screen in the hot water heater or before the water pump that would catch the lining material before it gets to the water pump? We are planning on heading south early 2013 and wondered if we could use the hot water heater in route if we don't have a city water connection before I replace the tank when we get to warmer weather?
I am only going to replace it with gas only since the TM is a 1999 and the savings doesn't seem to be worth the additional work and cost. Another question I have is there any difference in the Atwood and Suburban tanks? These camper tanks seem kind of pricey for what they are! You could almost buy a hot water tank for a home for the same price. I guess that is supply and demand.
Thanks for your help.
Ray