Water Heater Failures


As many as 90% of all residential water heaters manufactured between 1993 and 1996 may be affected by faulty polypropylene dip tubes, reports an article in Professional Builder.  The dip tubes either disintegrate into small pieces or into a white sludge that can clog plumbing fixtures and strainers on appliances (such as dishwashers and washing machines).  The American Water Works Association (AWWA) reports that the debris is nontoxic.  However, the disintegrating dip tubes do reduce water heater efficiency, as cold water is allowed to be deposited at the top of the tank where it is harder to heat and acts to dilute the outgoing hot water.

According to Energy Design Update, Reliance, A.O. Smith, State, Rheem, Bradford White, and Jackson water heaters are affected. Toll-free numbers for some of the above mentioned water heater manufacturers are listed below:  A.O. Smith (800)323-2636;  Rheem (800)621-5622;  State (800)821-2019;   Bradford-White (800)531-2111.




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