X2 ^
I always try to run the hose the shortest distance from the spigot to the RV and under the RV and/or in the shade as much as possible, because down here the water sitting in the hose will scald you when you first turn it on.
If it happens not to be the hose, you could have a bad check valve on the tank that allows hot water to flow backward when you open a faucet.
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Salem 29RKSS Pushing a GMC Sierra 2500HD!
Gotta go campin!
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