11:39AM | 11/17/03
Member Since: 11/16/03
2 lifetime posts
I recently got a repair estimate for an A. O. Smith gas water heater that has been heating erratically. The repair man said that the forced exhaust mechanism was malfunctioning, sending erroneous signals that the unit was not venting properly, which therefore was stopping the burner. He quoted me $600 to replace the exhaust unit and $1200 to replace the entire hot water heater.

This seems odd to me, that the little exhaust motor assembly would cost half as much as the entire unit, tank and all. Does this seem reasonable?

plumber Tom

04:26PM | 11/17/03
Member Since: 05/10/03
801 lifetime posts
Why do you have a power vented model anyway? Where does the WH vent to? In order to give fully accurate advice, these things are helpful. You also failed to mention how many gallons it was. For a 40 gal. power vented model the price does sound high. go to and pick out a new model that will be applicable to your needs.


05:03PM | 11/18/03
Member Since: 11/16/03
2 lifetime posts
I don't really know why it is a powervent. The house was originally all-electric (I think) and the gas vent needs to go horizontal for quite some distance to get to the outside of the house. It is 50 gallon water heater.
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