A/C Drain Pipe to Sink Drain Connection

Old 07-28-05, 08:20 AM
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A/C Drain Pipe to Sink Drain Connection

What is the best way to connect the 1" drain pipe to my sink drain before the P trap. I was told I can use a saddle tee. Is this a good idea? The only saddle tee I've found is for a 1/4" inlet tube. My drain pipe is 1", as I mentioned before. Is the transition possible between the 1" pipe to the 1/4 inlet tube even possible?

Any suggestions would help.
Old 07-28-05, 11:16 AM
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I'm not sure you're allowed to connect the AC drain to the main drawin without using an air gap. You'll definetely need some sort of trap otherwise the sewer vapors will enter the furnace.
Old 07-28-05, 11:49 AM
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I am not sure what your local codes are as Trinitro mentioned. I would (if allowable) install a 1-1/2" X 1" tee in the vertical drainline coming down from the sink before the trap. You have to realize though, if the sink drain gets plugged, the water and junk will back up into your unit. You may also be required to install a trap on the AC drainline. Good luck.
Old 07-28-05, 08:25 PM
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Saddle tee's are sold but they are prohibited under any code for the installation you are describing.

trinitro hit it on the head for the rest of the answer.

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