Dripping exterior (expansion?) pipe
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We have a courtyard villa - foxglove/Charlotte. We just noticed an exterior pipe (near the outdoor water source and garage door) is dripping more and more. Any ideas about what’s happening and what we should do? Thanks in advance for your suggestions.
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You need to find out what the pipe is. It could be one of the following:
- AC condensate drain. It is supposed to drip, especially when the AC is running. But, check the condensate drain pan in the HVAC unit to see if it is full of water. - Overflow drain line from the water heater drain pan. It will only drip when the water heater has a leak, or if the relief valve has tripped. Is there water in the drain pan under the water heater? - If you have a water softener, it could be the backflush drain. This will spew out a lot of water during the backflush cycle. |
It’s is the discharge from a a pressure relief valve. If system pressure rises, it opens to relieve the pressure. Probably a bad seat. Not sure if code requires a pressure relief, but if it doesn’t you could just plug it.
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Thanks for your reply. The pipe is near the hot water heater, the original from 2003. Our AC drain on the opposite side of the house and we don’t have a water softener system. The water heater drain pan is dry. My husband traced the pipe to the top of the heater.
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Thank you.
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My guess it's the condenser drain.
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You got that right! |
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This is my first posting attempt. Apologies for the lack of ability to reply. The pipe was traced back to the top of the water heater. I’ve tried unsuccessfully to post a picture from the top of the heater. The heater is the original from 2003.
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Looks like your pressure relief valve
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Thank you.
:bigbow:
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We checked with neighbors and they have expansion tanks. Either their water heaters were updated with the tank or we were overlooked during construction.
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I agree with the other poster that it may be time to consider buying a new water heater. If you do, make sure that each contractor who quotes includes the cost for the expansion tank. Some plumbers do not want to do the extra piping even though the expansion tank is required by the code. They will call it a "repair", not a replacement, and claim that the code doesn't apply to a repair. Also, they should install an overflow pan with a drain under the water heater if you don't already have one.
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Try flipping up the lever, drain some, flip the lever back down.
See if it stops leaking. If it was fully tripped it would gush out water. Still leaking? Replace the valve. |
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