Noise in pipes outside the house, what does that mean? When AC goes on that's when it starts. Also, @ times water leaks on upper deck outside open valve. Any suggestions?

Is this a new house?

The coil located in the furnace removes humidity in the air and this water has to go somewhere. It can drain into a french drain, or it can be directed outside the house if located in the attic or it can be pumped with a condensate pump.

This could be normal.

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Originally Posted by CA12889

Noise in pipes outside the house, what does that mean? When AC goes on that's when it starts. Also, @ times water leaks on upper deck outside open valve. Any suggestions?

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Would this "noise" come from the AC condensate discharge line? What does it sound like? Do you have a pump on your condensate drain? OR, it could come from the pipes from the compressor to the air handler not being properly strapped down

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At times water leaks on upper deck outside open valve.

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Does this water leak from a open pipe or a leaky faucet? My AC has one. It pumps the condensate up into the attic and then outside. Could you be hearing the vibration from a condensate pump? Regards, tom