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Old 03-04-2013, 07:44 AM   #1
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AC Condensate line


So I am in the middle of a bathroom remodel. Its a half bath and previously it had vinyl flooring and a 36" cabinet with sink. I demo'd the bathroom on Friday an did the tile work first - mostly because I was doing the entryway that the half bath is connected to and I wanted it to be contiguous.

So anyway I rip out the old cabinet and this is what I find - the AC condensate drip line had been taken out of the wall and into the drain under the cabinet. I never noticed it because we had never really used the cabinet in that bathroom for anything before.

My question is this - is there any reason i couldnt cut into the sheetrock and put that condensate drip line into the drain but inside the wall? Are there any reasons that it couldn't be done this way? I just want to be sure I'm not creating any problems in order to hide a 3/4" PVC pipe inside my wall.

I'm hoping to do this part soon so I can repair the sheetrock damage and start with paint and laying new baseboards/shoe moulding where the cabinet used to be.

Thanks in advance!
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Old 03-04-2013, 08:17 AM   #2
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AC Condensate line


It's done that way probably because it needs to be trapped. You can't hide the trap in the wall.

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Old 03-04-2013, 08:19 AM   #3
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AC Condensate line


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It's done that way probably because it needs to be trapped. You can't hide the trap in the wall.

What is the purpose of putting a trap on the condensate drip line?
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Old 03-04-2013, 08:29 AM   #4
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What is the purpose of putting a trap on the condensate drip line?
Prevent sewer gases and critters from entering your HVAC duct system. There is likely a trap at the coil outlet too, but with your 6 weeks of heating it would likely dry out. You don't want to smell sewer gases while heating.

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Old 03-04-2013, 08:33 AM   #5
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AC Condensate line


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Prevent sewer gases and critters from entering your HVAC duct system. There is likely a trap at the coil outlet too, but with your 6 weeks of heating it would likely dry out. You don't want to smell sewer gases while heating.
Is there any other way to accomplish this inside the wall? The pedestal sink will hide the water and drain lines but this condensate line will end up in near plain view - not very attractive at all
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Old 03-04-2013, 08:41 AM   #6
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Is there any other way to accomplish this inside the wall? The pedestal sink will hide the water and drain lines but this condensate line will end up in near plain view - not very attractive at all
Open up the wall and move it to the center. Use a chrome dishwasher tailpiece under sink, and sleeve the plastic stubbed out with chrome. A small rubber coupling and the tailpiece should be mostly concealed by the pedestal.
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Old 03-04-2013, 08:44 AM   #7
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Open up the wall and move it to the center. Use a chrome dishwasher tailpiece under sink, and sleeve the plastic stubbed out with chrome. A small rubber coupling and the tailpiece should be mostly concealed by the pedestal.

Centering it would certainly help hide it...I was just hoping to get it moved inside the wall, especially if I'm having to cut the sheetrock anyway
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Old 03-04-2013, 09:17 AM   #8
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under most codes thats a violation, double check and find an alternative,
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Old 03-04-2013, 09:42 AM   #9
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under most codes thats a violation, double check and find an alternative,
Which is a violation - putting it inside the wall or moving it to the center to hide it behind the pedestal sink? If its a code violation (i'll check into that) to put it in the wall I'll just move it dead center and hide it behind the pedestal.
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Old 03-04-2013, 09:55 AM   #10
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AC Condensate line


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Which is a violation - putting it inside the wall or moving it to the center to hide it behind the pedestal sink? If its a code violation (i'll check into that) to put it in the wall I'll just move it dead center and hide it behind the pedestal.
Concealing it in a wall is a violation. Needs to be accessible and drain into an approved drain receiver such as : floor drain, sink, washer box, tub overflow, etc....
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Old 03-04-2013, 09:56 AM   #11
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Concealing it in a wall is a violation. Needs to be accessible and drain into an approved drain receiver such as : floor drain, sink, washer box, tub overflow, etc....
Ok so it sounds like my only option is to open the wall, move the condensate line dead center but still drain it into that same trap. Sound about right?
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Old 03-04-2013, 01:36 PM   #12
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So I have one more option that I wanted to see if it would pass the sanity/code test.

Is the requirement that it be trapped at the drain or can it be trapped elsewhere?

I was thinking of putting a trap in the A/C closet and then hiding the downspout in the wall - is that even an option?
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Old 03-04-2013, 01:58 PM   #13
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So I have one more option that I wanted to see if it would pass the sanity/code test.

Is the requirement that it be trapped at the drain or can it be trapped elsewhere?

I was thinking of putting a trap in the A/C closet and then hiding the downspout in the wall - is that even an option?
is this a condo or single family home
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Old 03-04-2013, 02:00 PM   #14
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is this a condo or single family home
Single family - two story house. The A/C sits on the second floor right above the bathroom in the picture.
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Old 03-04-2013, 04:37 PM   #15
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You can not have a A/C condensate line connected to a sewer drain system trapped or in any fashion unless the drain is air gaped and the receiving line is trapped and resealed by secondary means, falls under the category of cross contamination, imagine an A/C system pulling methane gases from the sewer system and blowing through your home methane gas not only smells bad it will make you sick and can kill you. look for an alternate maybe a condensate pump with a flex line to the outside.

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