Label on side of tank has alpha-numeric serial number.
Look at 2nd and 3rd numbers in serial number.
For example C05... means water heater was made in 05 or 2005.
To measure if heater needs replacement, look for signs of water and rusting along bottom of tank.
Also listen for rumbling sound that says water heater has sediment build-up in bottom, and efficiency has dropped.
http://waterheatertimer.org/Leaking-water-heater.htmlhttp://waterheatertimer.org/Clean-sediment-out-of-water-heater.htmlhttp://waterheatertimer.org/9-ways-to-save-with-water-heater.htmlIf this is a gas water heater, then look at color of pilot light and burner flame.
If everything burns clear blue then water heater is working fine. If flames are yellow or orange, then combustion parts need cleaning.
Pilot is not blowing out, so the conditions needed for water heater operation are good.
Time to shop for water heater is before you need one.
For example buy scratch-n-dent water heater from local box store at a discount.
Look for box store coupons for Sears, Lowes, Home Depot, Ace, etc.
All brands of water heater are good > I recommend staying away from water heaters with blowers and electronics because parts are more expensive, and these water heaters are not proven more reliable or cheaper to operate, and are more susceptible to power surge.
Water heaters with longer warranty will last longer.
For gas: Install gas water heater yourself:
http://waterheatertimer.org/How-to-install-gas-water-heater.htmlTake a moment and rate answer:
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.
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