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Old 06-10-2015, 06:38 PM   #1
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a-coil plugged


I run my air conditioner and water from the a-coil backs up and run all on the inside of the furnace. The plastic tube for the runoff has no water in it at all. What tool do I need to suck the blockage out? Thanks in advance.

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Old 06-10-2015, 07:42 PM   #2
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a-coil plugged


wet/dry shop vac

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Old 06-10-2015, 09:19 PM   #3
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a-coil plugged


A Air compressor also works to blow down into the line. It should have a T at the top of the line, to allow Hot water to flush it out, along with blowing it out.

If you are getting a gunked line. Your unit is most likely not running long enough after the outside unit shuts down. The one place you see this happening as a common occurrence, is in units placed in attics.
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Old 06-12-2015, 10:55 AM   #4
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a-coil plugged


In the old days when R22 was cheap , I saw service techs blow out the drain lines with R22 .

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