11:12AM | 07/20/08
Member Since: 07/19/08
2 lifetime posts

The Temperature Pressure Relief Valve on my 9 year old AO Smith water heater has started to drip. It only does this when we use our central air. Any ideas on why or what I should do about it? I am planning on replacing the valve tomorrow, but find it curious that it only leaks when the air is in. The water heater is about 4 feet from the furnace, which is what circulates the air. It's a forced hot air system. Any help will be appreciated.




12:21PM | 07/20/08
Member Since: 07/22/04
511 lifetime posts
it has to be condensation.and i'm going to be surprised if replacing the t+p valve cures the drip.


08:46AM | 07/23/08
Member Since: 07/19/08
2 lifetime posts
Thanks, it turns out it was the water heater expansion tank. It had blown and wasn't regulating the pressure correctly. After replacing it, it turned out the Temperature Pressure Relief Valve wouldn't reseat and it was replaced also. Turns out the AC thing was just bad timing!

Thanks again,



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