Replacing a Water Heater | DoItYourself.com

One of the most common household plumbing projects is replacing a water heater. Many potential dangers can result from improper water heater installation. Be sure to check your local codes. Use only the procedures and materials your code allows. This booklet covers replacement of natural gas, LP gas and electric water heaters, the most common types.

The most common overhead-plumbed water heater hookup is shown. Before your can connect the new heater, the old one must be removed.

First, turn off the gas or electricity to the heater.

Next, drain the heater. Open a hot water faucet to allow air into the system.

On a gas heater, separate the vent pipe from the draft hood. The hood should lift off after you remove the sheet metal screw that holds it. After checking that the pilot light is out, disconnect the gas line at the heater and cap it.

Next, remove the heater from its water piping. If the pipes are connected with unionsremovable threaded fittingstake them apart with a pair of pipe wrenches. Pipes without unions must be hack-sawed off. A pipe/tubing cutter will also do the job. The old heater can now be removed and disposed of in an approved manner.

Move your new heater to its location by "walking" it or by using an appliance cart, dolly, or hand truck.

Position the new heater so your pipingparticularly a gas vent pipewill reach easily.

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Replacing a Water Heater | DoItYourself.com