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? regarding my house and AC unit

Old 05-05-2009, 07:57 AM
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Default ? regarding my house and AC unit

Straght out of college, my fiance at the time and I decided to go ahead and build our house vs buying one. Had the GC do his thing and closed on the house in late sept. all in all the house is still good with minor issues here and there. one main thing that i have conserns with is the overflow pipe for the AC condinser. now this 1/2 inch PVC pipe sticking out the base of my house is fairly standard on all houses however my drain pipe is a constant trickle of water. is this normal? my backyard is soaking wet with a 8-10ft strip running down from my house from this drain. is there anything i can do to direct the water by extending the pipe underground or directing it to another area away from the middle of my backyard? any help is appreciated.
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Old 05-05-2009, 08:15 AM
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Where are you in South Carolina? If in the lowcountry that amount of condensate wouldn't be unusual. That's the humidity the a/c is removing from your house. You can dig a large hole about the size of a 55gallon drum and fill it with septic tank gravel or whatever is available in your area- just use larger stones. Fill to about 6-8" below surface. Cover gravel with landscaping fabric to keep soil from washing down into the stone and fill it up the rest of the way with your topsoil and replace the sod.

Before you place the fabric and topsoil run a larger pipe from the top of the gravel pit over to your house and up under the condensate drain. 1" should do it. If necessary put a 90degree elbow on your condensate line so all the water drips into your new pipe. Leave an airgap/space between the two pipes so you can clearly see the water running.

Now some of the water will leach into the ground and some will evaporate up through the surface. It's the same principle as a septic drain field and it's done commonly where condensate is a problem.
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Old 05-05-2009, 08:29 AM
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Is the pipe coming off of the condenser (outside unit) or evaporator (inside unit) if it is coming off of the inside unit that pipe should just be an emergency drain coming off of the over flow pan under the unit.
the condenssate off of the evaporator coil should be piped into an open hub drain or tied directly into a sewer vent line inside of the house.
go in the attic to see if there is water in the overflow pan under the unit. if there is your main drain line is probably stopped up.
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Old 05-05-2009, 12:07 PM
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If you don't want the pipe sticking out of the house you can simply install a condensate pump. The pvc will terminate into the pump (located next to your air handler) and when the sump is full, it'll push the water out a tube that you can run to a drain or sink of your choice. You can buy one that will run in line with your t stat and in the event that the pump fails, it will shut your system down til it's fixed.
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Old 05-05-2009, 04:04 PM
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I directed mine under a deck leading to a fig tree that needed water. I'm happy and the fig tree is too. It's amazing how much water those things shed.
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