<human>:  How do I replace a water heater?
<bot>: To replace a water heater, you will need to turn off the power to your home's circuit breaker, then shut off the water supply lines to the heater. Next, disconnect the pipes from the old heater, using adjustable wrenches to loosen the fittings. Finally, install the new water heater, connecting the new unit to the water supply lines and to the power source.