This is a nice article for reference on draining hot water units for replacement.
A major part of your water heater maintenance involves draining the water heater annually to empty sediment that builds up from water deposits and debris. This will also ensure the water heater is running efficiently and extend its life.
- Turn off the heating supply to the unit. For electric water heaters, turn off the electricity at the electrical panel by switching off its circuit breaker. For gas water heaters, rotate the lever or knob on the thermostat from “on” to “pilot” position.
- Shut off the water supply by rotating the water shut-off valve atop the water heater.
- Attach a garden hose to the drain valve, extend the other end of the garden hose to a safe area to release the water outlet, and rotate the drain valve to open. Caution: The water in the unit will be very hot. You may want to wait a couple hours for the…
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