Extending the life of your water heater

By Jon McCreath, NPI Property Inspector, Emerson, Georgia

drain_water_heaterExtending the life of your water heater is something most homeowners don’t think much about.  Draining your water heater tank is something that you should do every year, and it only takes about 5-10 minutes.  How can this procedure extend the life or your water heater?

Over time, any type of water heater tank will build up sediment- which has three harmful effects on your home’s hot water system.  First, the sediment takes up space, effectively making your water heater smaller.  Second, the sediment can insulate the bottom of the tank in a gas water heater where much of the flame’s heat is absorbed into the water, or even cover a lower element in an electric water heater causing a reduction in heating efficiency.  Third, the sediment scratches the glass lining of water heater tank, resulting in exposed metal – which leads to rust and eventual tank failure.

You can extend the life of the tank and increase the efficiency of the system by simply draining a couple gallons of water off the bottom of the tank.
1. Shut the unit down, either by turning the gas valve to “pilot” or “off”, or flipping off the breaker to an electric unit.
2. Turn off the cold water supply line, usually located on the right side as you face the unit.
3. Attach a garden hose to the drain valve on the water heater tank, and run it to a drain.
4. turn on a hot water faucet somewhere in your home to allow the water to flow, and then open the drain valve toward the bottom of the tank.

Check the color of the water that drains- at first it may appear dark, but after just a few gallons it will become clear.  At that point, you can close the drain, and turn off the hot water faucet you had turned on previously.  Turn the cold water supply back on, turn the power or gas supply back on, and you’re done!  The next time you turn on a hot water faucet, there may be a couple of air pockets, so don’t worry if you hear a bit of noise as the noise should abate quickly.

While it may also be a good idea to have your water heater examined by a professional on a regular basis, draining your tank is relatively easy and can save you some money while helping to extend the life of your water heater.

McCreath PhotoJon McCreath is a professional National Property Inspections home inspector in northwest Georgia. If you live in the area, call 404.426.3661 to schedule your home inspection with Jon.

NPI and GPI home inspectors have the tools and knowledge to assess your home. Consult with your local NPI or GPI inspector for an assessment of your home.

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