Although it seems to be pretty much straightforward, I am looking for any tips or possible hang-ups I may run into on the way as I have never done this. The water heater is a direct vent 6 gallon propane heater with electronic ignition manufactured by Suburban manufacturing.
As you said replacing an RV's Water Heater seems straight forward. The biggest hang-up you are probably going to encounter is disconnecting the water lines, propane line and electrical connections on the back of your existing water heater. Depending on the design of your RV these connections can be hard to get to.
The first thing you need to do is get the right water heater for your RV. If you have not gotten a water heater yet here are some places I recommend you look. eBay has a large selection of RV Water Heaters (the water heaters have "Buy It Now Prices" so no bidding is required. Amazon also has some RV Water Heaters.
Now to the fun part the installation process. As they say a picture is worth a 1000 words or in this case a video. The video below walks you through the process of replacing an RV Water Heater. I believe it should be very helpful to you.
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