Quote:
Originally Posted by dieselguy
Dave W ... Suburban HWH have steel tanks and need the anode, thus the larger wrench size. Atwood HWH have aluminum tanks and don't need the anode rode, thus the smaller drain plug. It depends on the brand or model of RV as to which is installed, but all my HWH on my Montanas since 2000 had Suburban tanks. $$ from the supplier of either heater could change future installs.
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Yep, you are 100% correct. They all have Suburbans, that is except those that have Atwoods. I think that it's based on the time of the month or the phase of the moon as to what unit gets what, regardless of brand name..