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A/C condensate line not dripping #4782369
06/09/18 04:35 PM
06/09/18 04:35 PM
Joined: Nov 2008
Posts: 9,100
Phoenix
dishdude Offline OP
dishdude  Offline OP
Joined: Nov 2008
Posts: 9,100
Phoenix
I haven't noticed any water coming out of my condensate line for a week or two, and even though it's been dry I feel like there should be some discharge. The furnace and coil are in the attic and I don't want to climb up there. Can I try hooking my shop vac to the line outside and see if that works?

I feel like I could make something like this.

https://www.amazon.com/Diyvac-%C2%AE-DV4/dp/B01LYZ6REM/ref=sr_1_1?ie=UTF8&qid=1528579896&sr=8-1&keywords=diyvac


2018 Challenger SRT
Re: A/C condensate line not dripping [Re: dishdude] #4782371
06/09/18 04:43 PM
06/09/18 04:43 PM
Joined: Dec 2003
Posts: 9,838
Florida, Cape Coral
Eddie Offline
Eddie  Offline
Joined: Dec 2003
Posts: 9,838
Florida, Cape Coral
I take my garden hose and stick it into the drip line and push water up the line for maybe 1 full minute. You won't believe the stuff that come out. I do this 2X per year. Ed


CX5 Touring 2.5L :-)
Re: A/C condensate line not dripping [Re: dishdude] #4782374
06/09/18 04:45 PM
06/09/18 04:45 PM
Joined: Aug 2008
Posts: 339
NJ
Padawan Offline
Padawan  Offline
Joined: Aug 2008
Posts: 339
NJ
If the primary drain is clogged and the system is generating condensate, you should eventually see it coming out of the secondary/emergency drain. If it was installed correctly, the emergency drain should intentionally be highly obvious when it's dripping.

Re: A/C condensate line not dripping [Re: dishdude] #4782378
06/09/18 04:55 PM
06/09/18 04:55 PM
Joined: Feb 2013
Posts: 10,850
Phoenix, AZ
Nick1994 Offline
Nick1994  Offline
Joined: Feb 2013
Posts: 10,850
Phoenix, AZ
No humidity, mine doesn’t drip either.

I bought a new indoor/outdoor thermometer last week and it displays humidity percentage. 28% in my house and the outdoor just says “LL%” because it can’t read below 10%.

Here’s the Weather app




2015 Hyundai Sonata 2.4L 85k Mobil 1 AFE 0w30 & OEM
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Re: A/C condensate line not dripping [Re: dishdude] #4782384
06/09/18 05:06 PM
06/09/18 05:06 PM
Joined: Nov 2008
Posts: 9,100
Phoenix
dishdude Offline OP
dishdude  Offline OP
Joined: Nov 2008
Posts: 9,100
Phoenix
I just tried using the hose from the shop vac and sealing it with my hand, nothing. I think it was sealing since you could hear the motor straining.

Nothing coming from the secondary drain, there's a huge pan under the unit that would catch any overflow and discharge from there. I also stuck a cheap little battery powered water alarm in the pan and haven't heard anything from it, but it might be dead since it's been up there 3 years.

Even though it's super dry, there's usually a drip. I would think that showering and cooking with boiling water would generate some indoor humidity.

Other than leaking out, is there any damage to the coil if water collects inside?


2018 Challenger SRT
Re: A/C condensate line not dripping [Re: dishdude] #4782389
06/09/18 05:10 PM
06/09/18 05:10 PM
Joined: May 2013
Posts: 136
Peace valley, Missouri
Fitter30 Offline
Fitter30  Offline
Joined: May 2013
Posts: 136
Peace valley, Missouri
At 5% Rh your car ac wouldn't drip. If the suction line is cold to the touch at outside unit it's ok. Suction line is the larger insulated line, smaller is the liquid line that runs warm to almost hot. With a thermometer 18* to 24* across the indoor coil is normal.

Re: A/C condensate line not dripping [Re: dishdude] #4782390
06/09/18 05:15 PM
06/09/18 05:15 PM
Joined: Apr 2014
Posts: 1,271
South Central PA
Delta Offline
Delta  Offline
Joined: Apr 2014
Posts: 1,271
South Central PA
Originally Posted By: dishdude
I just tried using the hose from the shop vac and sealing it with my hand, nothing. I think it was sealing since you could hear the motor straining.

Nothing coming from the secondary drain, there's a huge pan under the unit that would catch any overflow and discharge from there. I also stuck a cheap little battery powered water alarm in the pan and haven't heard anything from it, but it might be dead since it's been up there 3 years.

Even though it's super dry, there's usually a drip. I would think that showering and cooking with boiling water would generate some indoor humidity.

Other than leaking out, is there any damage to the coil if water collects inside?


It's either sealing, or clogged possibly. Had that happen to my grandmothers house in Mississippi. Mold and gunk built up in the trap and water began to travel along the ceiling and into the hallway. The water had overflowed the pan under the unit. I had to crawl in the attic and cut out the old trap, but above the trap I put a threaded fitting on there so every spring I would put 1/2 a gallon of bleach through it. I know it sucks to crawl in the attic when it's hot, but it was necessary.


'17 VW GTI 2.0T - 6MT - 9K - Edge 0w40
'15 Camry SE - 2.5 - 20K - PP 0w20
'99 S10 - 2.2 5MT - 156K - PP 10w30
Re: A/C condensate line not dripping [Re: dishdude] #4782411
06/09/18 05:55 PM
06/09/18 05:55 PM
Joined: Jun 2002
Posts: 18,248
Elizabethtown, Pa
Al Offline
Al  Offline
Joined: Jun 2002
Posts: 18,248
Elizabethtown, Pa
Is it cooling?
What is the temp coming out of the vents?
What is the temp coming out of the outdoor unit vs air temp?

Last edited by Al; 06/09/18 05:57 PM.

Re: A/C condensate line not dripping [Re: dishdude] #4782420
06/09/18 06:14 PM
06/09/18 06:14 PM
Joined: May 2014
Posts: 1,260
Minnesota
philipp10 Offline
philipp10  Offline
Joined: May 2014
Posts: 1,260
Minnesota
it's 5% humidity in Phoenix. Even if the pan collected some, it would probably evaporate rather than collect.

Re: A/C condensate line not dripping [Re: Al] #4782430
06/09/18 06:27 PM
06/09/18 06:27 PM
Joined: Nov 2008
Posts: 9,100
Phoenix
dishdude Offline OP
dishdude  Offline OP
Joined: Nov 2008
Posts: 9,100
Phoenix
Originally Posted By: Al
Is it cooling?
What is the temp coming out of the vents?
What is the temp coming out of the outdoor unit vs air temp?


It's cooling just fine, I have the thermostat set at 73 and it's well over 100 outside. I just feel like it used to drip a bit, even in low humidity conditions.


2018 Challenger SRT
Re: A/C condensate line not dripping [Re: dishdude] #4782432
06/09/18 06:32 PM
06/09/18 06:32 PM
Joined: Aug 2005
Posts: 7,148
Leamington, ON, Canada ..... r...
Papa Bear Offline
Papa Bear  Offline
Joined: Aug 2005
Posts: 7,148
Leamington, ON, Canada ..... r...
Originally Posted By: dishdude
I don't want to climb up there.


Are you going to want to climb up there to replace the ceiling ?? ....


2016 Dodge GC Deep Cherry 5W-30 Dino
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Re: A/C condensate line not dripping [Re: dishdude] #4782459
06/09/18 07:18 PM
06/09/18 07:18 PM
Joined: Sep 2005
Posts: 5,750
MIchigan
Warstud Offline
Warstud  Offline
Joined: Sep 2005
Posts: 5,750
MIchigan
I think if the condensate line was plugged up it wouldn't run.

Re: A/C condensate line not dripping [Re: dishdude] #4782472
06/09/18 07:44 PM
06/09/18 07:44 PM
Joined: Nov 2009
Posts: 4,973
Houston, Texas
motor_oil_madman Offline
motor_oil_madman  Offline
Joined: Nov 2009
Posts: 4,973
Houston, Texas
At 5 percent humidity it's not going to. Also it's not supposed to drip from the roof, the primary drain is usually one of the sinks in the house.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: A/C condensate line not dripping [Re: dishdude] #4782483
06/09/18 07:55 PM
06/09/18 07:55 PM
Joined: Dec 2003
Posts: 9,838
Florida, Cape Coral
Eddie Offline
Eddie  Offline
Joined: Dec 2003
Posts: 9,838
Florida, Cape Coral
Just do the hose check I suggested above. That will prove there is no restriction. Ed


CX5 Touring 2.5L :-)
Re: A/C condensate line not dripping [Re: Warstud] #4782517
06/09/18 08:27 PM
06/09/18 08:27 PM
Joined: Feb 2014
Posts: 1,727
Texas
Dallas69 Offline
Dallas69  Offline
Joined: Feb 2014
Posts: 1,727
Texas
When mine got clogged the backed up and leaked into the hallway.


2009 Galant-ultra oil and filter
1987 Ford F-150 302
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