Not flushing your water heater each year of sediment build-up can keep the water heater from operating at full capacity. By flushing the tank once a year you won’t be wasting cash by heating through the debris and sediment.
Start by turning off the heater and letting the tank cool; then shut off the water supply. If the drain to the outside is downhill, connect a hose to the drain cock and run it to a floor drain or out of the home.
If you don’t have a drain, send the water to a sink or bucket using a drill pump. Draining 3-5 gallons is usually enough but you may have to do it a few times until the water is clear and free of visible sediment. This will save you energy and extend the life of your water heater.
The inspection of the water heater should also be done. When it is re-fired make sure that the flame is a nice bright blue. If it is not, call a plumber to repair as carbon monoxide can occur with a poor burn.