westend wrote:
Be careful of scalding. I've forgotten what temperature the hot water is at with an Atwood with mixing valve but it is definitely hotter than the ones without. Your house water is not that hot.
The XT models maintain the tank temperature somewhere around 160 degrees. This temperature can cause 2nd and 3rd degree burns in half a second, according to the references I've been able to locate. If you want to get rid of the mixing valve, I would suggest also replacing the thermostat with a "normal" RV water heater thermostat (typically around 140 degrees) or lower if desired. It will mean you run out of hot water sooner when showering, but it might prevent some painful injuries.
Even ordinary RV water heaters are set to heat hotter than many domestic water heaters (140ish degrees vs 120ish degrees)