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1. The purpose of a water heat is to heat a large quantity of water using either gas or electricity as a fuel source. Before flushing the water heater, you need to turn off the fuel source to avoid damaging the water heater. If you have a gas water heater , then look for a thermostat on the outside of the water heater. It typically has a red knob and is located where the gas pipe enters the unit. Make a note of what the temperature setting is, then turn the thermostat to the lowest setting, which should be marked as 'Pilot'. If you have an electric water heater , then you will need to turn ... 2. With the heat turned off, the water heater can no longer heat the water inside the tank. If you are concerned about the risk of being burned, turn on a nearby faucet and allow the hot water in the tank to drain into the sink, while being replaced with cold water. This isn't a necessary step, but it is safer to work with cold water. When most of the hot water has been replaced with cold water, turn off the water supply valve. This valve should be located where the cold water pipe enters at the top of the tank. 3. Locate the drain valve at the base of the water heater and attach a garden hose to this valve with a set of channel locks. The drain valve generally looks like a regular hose bib, similar to an outdoor faucet, though it may be made of plastic instead of metal. If you can't spot it immediately, it may be hidden under a removable cover. Connect the garden hose to the drain valve and extend the other end of the hose to an area where the tank can safely drain. Keep in mind that if you didn't allow the water to cool overnight or replace the hot water with cold water after turning off the power ...
