Yes, for two reasons, first to keep from getting sprayed with hot water, second to help remove a potential shock hazard when you plug it back in.
Start by disconnecting shore power (don't trust just the circuit breaker) and turn off the gas side of the water heater.
Run the hot water until the tank is cool, then shut off the water supply and remove the anode rod. (it will be under pressure so stand clear) After water stops flowing, open the relief valve which will help drain the tank.
After it's empty, use an old towel to help dry the area,
Disconnect the leads from the heating element, remove the element, install the new one, connect the leads, push the thermostat reset buttons, install the anode rod (use new Teflon tape) close the relief valve, turn on the water supply, go inside, open a hot water faucet until the spurting stops, purge air from all faucets (don't forget the outside shower).
Reconnect shore power, turn on the water heater electric element and check for function.
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John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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