What workarounds did people try for "How to clear a clogged AC condensate drain line"?

Community members documented 98 workarounds: 1. Vacuuming out the drain piping periodically 2. Calling an HVAC technician 3. Using a shop vac at the exterior exit point of the drain line 4. using a wet/dry vacuum to blow air into the drain line 5. checking and replacing air filters 6. snaking the drain periodically 7. pumping water out of the tubes temporarily 8. placing a moisture absorbent pack in the cabinet 9. using a shop vacuum with an adapter 10. pouring hot water and vinegar down the tube to dissolve clogs 11. Pouring cleaning solutions into unverified pipes without knowing if they are correct. 12. Wondering if the pipe needs to be primed and glued 13. Using a shop-vac at the origin or inlet at the unit 14. Sawing the condensate pipe at a 45 degree angle to create an air gap 15. Using a wet vac to suck out the water when the drain gets vacuum locked 16. using a shop vac to try to clear the clogged condensate line 17. Blowing out the drain line using CO2 18. Diverting dripping water into a nearby downspout 19. Using hydrogen peroxide or chlorine instead 20. Pouring cleaning solutions into either side or both 21. Diluting higher concentration solutions 22. Flushing it with nitrogen 23. Using a shop vac on the outside PVC line 24. Flushing the condensation drain 25. Blowing out the drain line with an air compressor 26. Running bleach through the drain for preventative maintenance 27. Removing the P-trap to manually drain the water from the A/C drain pan 28. forking out small amounts of sludge from the primary line 29. shopping around for an HVAC company to clear the drain and install a secondary safety switch 30. Blow out the primary line with compressed air 31. Use a shop vacuum to suck out the clog 32. Pour diluted bleach down the pipe every one or two months 33. Call an HVAC technician or plumber for service 34. Bypassing the thermostat by shorting the Y and R pins 35. Planning to use a shop vac to clear the clog once the drain location is found 36. Hook up a shop vac at the exit of the drain and let it rip 37. Use a long piece of wire to knock the clog loose 38. Slightly disassemble it and blow it out with compressed air 39. Run really hot water down the line 40. Flushing vinegar and water down the cleanout 41. Vacuuming the pipe at the side that is clogged 42. Pouring hot water or bleach down the pipe 43. checking and cleaning the drain line 44. Flushing lines monthly with vinegar or diluted bleach 45. Using a shop-vac to clear the drain lines 46. Adding biological treatments 47. Installing a condensate pump or running a new drain line 48. Reading product instructions or guessing based on general enclosure layouts. 49. Trying to clear a clog by blowing air up the tube from outside 50. Checking for drain hoses and using a phone with a flashlight to look underneath 51. Loosening the hose clamps under the sink and using a shop vac to pull water away from the unit. 52. Clearing the condensate drain line using a shop vac 53. Checking if the unit has fallen out of level and adjusting the platform 54. cutting the drain pipe outside and adding an upward-facing 90-degree elbow to act as a trap 55. priming the drain line manually by pouring water into it 56. Poured lots of vinegar and flushed with hot water down the sink 57. Considering removing the P-trap or cutting the PVC line to hook up a wet/dry shop vac 58. Taking the drainage pipe apart at the bend 59. Opening up the unit to look inside 60. Blow out the line with a shop vac 61. Jam something down the line to un-gunk it 62. Pour diluted vinegar into the unit's pan to clear residue 63. Pay for a yearly service agreement 64. Using a shop vac on the drain pipe to clear sludge and clogs 65. Blowing out the primary drain with compressed air or by mouth 66. Installing cleanouts 67. Leaving strategic fittings unglued 68. Using unions or ferncos 69. Using 100% silicone instead of PVC glue 70. Snaking or blowing out the drain line in both directions 71. Using a shop vacuum from the outside or the other end of the drain 72. Removing the unit from the mounting plate to access connections 73. Pouring water down the cleanout pipe 74. Removing the coil panel to clear the drain and pan 75. Snaking or blasting pressure through the line 76. Diverting the water temporarily 77. Cutting into the drain line to blow it out with a compressor and then installing a repair patch 78. Removing the pipe at the top of the T-fitting in the attic to pour water or use nitrogen 79. Using a wet/dry vacuum on the end of the drain line 80. Manually checking the drain pan when the AC stops working 81. Pouring distilled white vinegar, hot tap water, or dish soap down the cleanout tee for maintenance 82. Setting a calendar reminder to clean out the P trap monthly 83. Flushing with Drain Solve or similar routine maintenance chemicals 84. Using a shop vac on the tee to clear water 85. Using a CO2 gallo gun 86. Pouring hot water or bleach into the tee 87. using a hose-mounted pressure washer to flush the top well 88. drilling new drain holes through the body panels and sealing them 89. parking under a carport or in a garage 90. stripping the interior to dry carpets and mats manually 91. Blocking the drain pan inlet with a rag or tape so a shop vacuum pulls debris instead of just pulling air. 92. Rigging a flexible tube and funnel to bypass the limited access point and pour vinegar or bleach directly into the downward pipe. 93. Cutting the PVC line to permanently install shutoff valves and unions for attaching a garden hose or air compressor. 94. Reversing the vacuum to blow positive pressure into the line 95. Using an air compressor from the top to blow the clog out 96. Blasting the line with a CO2 drain gun 97. Feeding a snake, steel wire, or string trimmer line into the pipe 98. Flushing the drain line with tap water or vinegar

How to clear a clogged AC condensate drain line

Algae and slime buildup inside condensate lines blocks airflow and water drainage, causing the drain pan to overflow and leak into ceilings or floors. Clearing the blockage requires snaking or pumping out the standing water in the PVC lines and U-joints to stop the immediate flooding.

Overview

Last updated Oct 30, 2026

People affected43 accounts across 5 forums

Workarounds found98 items attempted

Community agreement159 total upvotes

What the numbers show

Counted from the threads quoted below. How we count

The most recent one is from October 2026.
This comes up 19.3× more often in r/hvacadvice than across the site as a whole.

What people tried

Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.

98 items+ Contribute

Found another way around this?

Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.

1
Vacuuming out the drain piping periodically
2 people mentioned
Did this help you?
2
Calling an HVAC technician
2 people mentioned
Did this help you?
3
Using a shop vac at the exterior exit point of the drain line
2 people mentioned
Did this help you?
4
using a wet/dry vacuum to blow air into the drain line
Did this help you?
5
checking and replacing air filters
Did this help you?
6
snaking the drain periodically
Did this help you?
7
pumping water out of the tubes temporarily
Did this help you?
8
placing a moisture absorbent pack in the cabinet
Did this help you?
9
using a shop vacuum with an adapter
Did this help you?
10
pouring hot water and vinegar down the tube to dissolve clogs
Did this help you?
11
Pouring cleaning solutions into unverified pipes without knowing if they are correct.
Did this help you?
12
Wondering if the pipe needs to be primed and glued
Did this help you?
13
Using a shop-vac at the origin or inlet at the unit
Did this help you?
14
Sawing the condensate pipe at a 45 degree angle to create an air gap
Did this help you?
15
Using a wet vac to suck out the water when the drain gets vacuum locked
Did this help you?
16
using a shop vac to try to clear the clogged condensate line
Did this help you?
17
Blowing out the drain line using CO2
Did this help you?
18
Diverting dripping water into a nearby downspout
Did this help you?
19
Using hydrogen peroxide or chlorine instead
Did this help you?
20
Pouring cleaning solutions into either side or both
Did this help you?
21
Diluting higher concentration solutions
Did this help you?
22
Flushing it with nitrogen
Did this help you?
23
Using a shop vac on the outside PVC line
Did this help you?
24
Flushing the condensation drain
Did this help you?
25
Blowing out the drain line with an air compressor
Did this help you?
26
Running bleach through the drain for preventative maintenance
Did this help you?
27
Removing the P-trap to manually drain the water from the A/C drain pan
Did this help you?
28
forking out small amounts of sludge from the primary line
Did this help you?
29
shopping around for an HVAC company to clear the drain and install a secondary safety switch
Did this help you?
30
Blow out the primary line with compressed air
Did this help you?
31
Use a shop vacuum to suck out the clog
Did this help you?
32
Pour diluted bleach down the pipe every one or two months
Did this help you?
33
Call an HVAC technician or plumber for service
Did this help you?
34
Bypassing the thermostat by shorting the Y and R pins
Did this help you?
35
Planning to use a shop vac to clear the clog once the drain location is found
Did this help you?
36
Hook up a shop vac at the exit of the drain and let it rip
Did this help you?
37
Use a long piece of wire to knock the clog loose
Did this help you?
38
Slightly disassemble it and blow it out with compressed air
Did this help you?
39
Run really hot water down the line
Did this help you?
40
Flushing vinegar and water down the cleanout
Did this help you?
41
Vacuuming the pipe at the side that is clogged
Did this help you?
42
Pouring hot water or bleach down the pipe
Did this help you?
43
checking and cleaning the drain line
Did this help you?
44
Flushing lines monthly with vinegar or diluted bleach
Did this help you?
45
Using a shop-vac to clear the drain lines
Did this help you?
46
Adding biological treatments
Did this help you?
47
Installing a condensate pump or running a new drain line
Did this help you?
48
Reading product instructions or guessing based on general enclosure layouts.
Did this help you?
49
Trying to clear a clog by blowing air up the tube from outside
Did this help you?
50
Checking for drain hoses and using a phone with a flashlight to look underneath
Did this help you?
51
Loosening the hose clamps under the sink and using a shop vac to pull water away from the unit.
Did this help you?
52
Clearing the condensate drain line using a shop vac
Did this help you?
53
Checking if the unit has fallen out of level and adjusting the platform
Did this help you?
54
cutting the drain pipe outside and adding an upward-facing 90-degree elbow to act as a trap
Did this help you?
55
priming the drain line manually by pouring water into it
Did this help you?
56
Poured lots of vinegar and flushed with hot water down the sink
Did this help you?
57
Considering removing the P-trap or cutting the PVC line to hook up a wet/dry shop vac
Did this help you?
58
Taking the drainage pipe apart at the bend
Did this help you?
59
Opening up the unit to look inside
Did this help you?
60
Blow out the line with a shop vac
Did this help you?
61
Jam something down the line to un-gunk it
Did this help you?
62
Pour diluted vinegar into the unit's pan to clear residue
Did this help you?
63
Pay for a yearly service agreement
Did this help you?
64
Using a shop vac on the drain pipe to clear sludge and clogs
Did this help you?
65
Blowing out the primary drain with compressed air or by mouth
Did this help you?
66
Installing cleanouts
Did this help you?
67
Leaving strategic fittings unglued
Did this help you?
68
Using unions or ferncos
Did this help you?
69
Using 100% silicone instead of PVC glue
Did this help you?
70
Snaking or blowing out the drain line in both directions
Did this help you?
71
Using a shop vacuum from the outside or the other end of the drain
Did this help you?
72
Removing the unit from the mounting plate to access connections
Did this help you?
73
Pouring water down the cleanout pipe
Did this help you?
74
Removing the coil panel to clear the drain and pan
Did this help you?
75
Snaking or blasting pressure through the line
Did this help you?
76
Diverting the water temporarily
Did this help you?
77
Cutting into the drain line to blow it out with a compressor and then installing a repair patch
Did this help you?
78
Removing the pipe at the top of the T-fitting in the attic to pour water or use nitrogen
Did this help you?
79
Using a wet/dry vacuum on the end of the drain line
Did this help you?
80
Manually checking the drain pan when the AC stops working
Did this help you?
81
Pouring distilled white vinegar, hot tap water, or dish soap down the cleanout tee for maintenance
Did this help you?
82
Setting a calendar reminder to clean out the P trap monthly
Did this help you?
83
Flushing with Drain Solve or similar routine maintenance chemicals
Did this help you?
84
Using a shop vac on the tee to clear water
Did this help you?
85
Using a CO2 gallo gun
Did this help you?
86
Pouring hot water or bleach into the tee
Did this help you?
87
using a hose-mounted pressure washer to flush the top well
Did this help you?
88
drilling new drain holes through the body panels and sealing them
Did this help you?
89
parking under a carport or in a garage
Did this help you?
90
stripping the interior to dry carpets and mats manually
Did this help you?
91
Blocking the drain pan inlet with a rag or tape so a shop vacuum pulls debris instead of just pulling air.
Did this help you?
92
Rigging a flexible tube and funnel to bypass the limited access point and pour vinegar or bleach directly into the downward pipe.
Did this help you?
93
Cutting the PVC line to permanently install shutoff valves and unions for attaching a garden hose or air compressor.
Did this help you?
94
Reversing the vacuum to blow positive pressure into the line
Did this help you?
95
Using an air compressor from the top to blow the clog out
Did this help you?
96
Blasting the line with a CO2 drain gun
Did this help you?
97
Feeding a snake, steel wire, or string trimmer line into the pipe
Did this help you?
98
Flushing the drain line with tap water or vinegar
Did this help you?

Tried another approach not listed above?+ Share your workaround ↑

In their words

Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.

r/hvacadvice33 people · September 2026 – October 2026

“I can not find where the emergency drain pan would be in this attic unit.”source ↗

“Ever since the water stopped dripping outside, it is now coming in through the down stairs ceiling directly below it.”source ↗

Mamahart5656 · r/hvacadvice · 40 upvotes

“My drain line clogs with "gunk" about once or a year. Everytime my wife and I panic wondering why the AC isn't working. Then, I remember to check the pan and see it is full. Is there a "smart" float switch that y'all might recommend that can send a notification or something when it is full?”source ↗

weneve · r/hvacadvice · 5 upvotes

“In the past, I could just flush the drain line once or twice a year with Drain Solve or something similar as routine maintenance, but that hasn’t worked this time.”source ↗

“I recently noticed that the outside pipe is barely dripping, and most of the water seems to be draining into the handy-dandy water jug I have sitting underneath the tee. For the past few weeks, I’ve had to use a shop vac on the tee to clear it.”source ↗

“I even bought one of those CO₂ gallo guns and tried using it to clear the line, but no luck.”source ↗

Acceptable-Draw-5468 · r/hvacadvice · 5 upvotes

“Our issue is that in the past two weeks I've noticed a buildup of moisture around the base of the HVAC unit.”source ↗

“Second picture shows what it was initially, but then it was to the point where the wooden base support was saturated and water was pooling in spots.”source ↗

“I pulled the filter and the filter was damp and metal floor of that area was also a bit wet.”source ↗

Rick_Mexler · r/hvacadvice · 4 upvotes

“Checked ac unit and saw some rust in the pan”source ↗

gassynotclassy · r/hvacadvice · 4 upvotes

“I live in Florida and it is currently 90° inside of my house.”source ↗

“My air conditioning was working perfectly, or I thought perfectly, whenever I left for work this morning. Whenever I got home my house was incredibly hot. Hot air blowing out of my AC vents.”source ↗

“there is a good deal of water on the floor and it seems like every time I open up the PVC drainage water gushes out of it”source ↗

Strange_Rice_4957 · r/hvacadvice · 3 upvotes

“Trying to fix my ac that is leaking water.”source ↗

“I’m trying to clear this main drain line. It probably hasn’t been flushed or cleared in 25 years.”source ↗

“Can I take the p trap off and do this? I’m afraid if I take off that rubber hose it will be too difficult for me to reattach.”source ↗

Mamahart5656 · r/hvacadvice · 3 upvotes

“I have some water coming out of a secondary drain line (above a window), shown in the first photo.”source ↗

“When I pour water down the pipe that is sticking up (circled in yellow in second photo) by the air handler, the water comes out of the secondary line.”source ↗

“Do I just call an HVAC tech at this point?”source ↗

between-seasons · r/hvacadvice · 3 upvotes

“My AC drain line is clogged. I vacuumed it out and two days later it was re-clogged.”source ↗

“I’m looking to add vinegar and then water to help drain the line but this is the only access I can find.”source ↗

Avid_Specialist · r/hvacadvice · 3 upvotes

“I haves 2 story house. AC is in attic with pvc drain line leading to upstairs bathroom sink. Drain pan has water , what do I troubleshoot to fix this?”source ↗

HomePM-DIY · r/hvacadvice · 2 upvotes

“Once in a while I'll vacuum out the piping and this weird white solid gunk will come out. It hasn't been this bad before.”source ↗

captaindre1996 · r/hvacadvice · 2 upvotes

“My ac unit stopped working and I think it is due to the condensate pan being full and not draining.”source ↗

elrbiker · r/hvacadvice · 2 upvotes

“I was in my attic and noticed there is water filled in the white pipe up to the black line on it.”source ↗

“There is also a little water leaking on the outside of the insulation with the blue line.”source ↗

Ashony13 · r/hvacadvice · 2 upvotes

“My air handler kicked off by the float switch. There is water in the drip pan but no noticeable leaks. I took both floats out and it's working fine.”source ↗

Melodic-Presence-743 · r/hvacadvice · 2 upvotes

“I noticed my overflow line has been draining to the back porch. It's working properly and there has been no spilling in the attic.”source ↗

“I came up expecting to unclog some gunk out of those lines in the red circle, but then I noticed the pipe in the green circle and now I'm wondering why it's angled like that, and whether it's supposed to be capped or not?”source ↗

Former-Swordfish-288 · r/hvacadvice · 2 upvotes

“Used to have issues until I shop vac’d the line every 2 months.”source ↗

Igotyamergerighthere · r/hvacadvice · 2 upvotes

“My AC unit which is on my roof is leaking condensation - see video - instead of draining through the condensation pipe.”source ↗

“Is there a clog somewhere preventing the water from draining properly?”source ↗

DesertDrone12 · r/hvacadvice · 2 upvotes

“Before I could take everything out and wash with ease. Can I re-plumb the drain without glueing?”source ↗

muddbone46 · r/hvacadvice · 2 upvotes

“I've tried that too. Nothing. This is some kinda clog!”source ↗

Acceptable-Draw-5468 · r/hvacadvice · 2 upvotes

“Yes. The condensation is coming out of the secondary now”source ↗

Niko120 · r/hvacadvice · 2 upvotes

“Slime found in the condensate drain line of the AC in an apartment unit….. what does this mean?”source ↗

“It needs to be snaked periodically as it gets full and leaks (and floods) our apartment.”source ↗

“I was pumping water out of these tubes so it can stop leaking temporarily, when I noticed I could not remove water from this U joint, and behold, the slime.”source ↗

Mkng-ApplPie · r/hvacadvice · 1 upvotes

“...and yes, I have already tried my shop vac.”source ↗

“This time it runs for about 5 or 6 seconds and then you can hear it do the thing that you can hear when you block the flow of air where the internal mechanism kicks in and it basically stops sucking to not burn out the motor.”source ↗

“I just feel like I have some stubborn algae or whatever that slime is.”source ↗

thegreatcerebral · r/hvacadvice · 1 upvotes

“There's a slight drip coming out of the pipe here. I believe it just needs cleaned out, but I have no idea how to do that.”source ↗

“First time homeowner here, any advice would be greatly appreciated!”source ↗

Deejeneracy · r/hvacadvice · 1 upvotes

“The line recently got clogged and I believe it was due to the water puddling where it terminated out of the house, not letting water flow out.”source ↗

Successful_Tap_1859 · r/hvacadvice · 1 upvotes

“My condensate line is clogged and I am trying to clear it. I have tried already to shop vac it out to no avail”source ↗

“I am trying to locate my coils to see if they are freezing and/or need cleaning”source ↗

“I am trying to locate my drip pan to see if there is something there that is causing the clog.”source ↗

thegreatcerebral · r/hvacadvice · 1 upvotes

“For now should I leave green circle capped or uncap it?”source ↗

Former-Swordfish-288 · r/hvacadvice · 1 upvotes

“Upper level AC started to short cycle and I shorted the Y and R pins to turn the AC, while going out to the yard I noticed the spill pipe leaking. My units are in the attic on the side of drip but I can't find the AC drain anywhere. Where to look.”source ↗

MartinelliG · r/hvacadvice · 1 upvotes

“These are my outside fans but not sure where I can find AC drain?”source ↗

MartinelliG · r/hvacadvice · 1 upvotes

“Shouldn't it vent outside the house somewhere? I want to clear the clog through a shop vac and see if that fixes it”source ↗

MartinelliG · r/hvacadvice · 1 upvotes

“You are right on many fronts, drywall sanding and painting going on. Just replaced my filter when short cycling started. My intention was to rule out thermostat issues. I jumped R and Y and could feel colder air flow and cool the upper level. I was about to get a new thermostat.”source ↗

MartinelliG · r/hvacadvice · 1 upvotes

“indoor humidity sitting around 79%”source ↗

“Checked the condensate drain line at the indoor furnace, and it is definitely clogged and backing up.”source ↗

“Because this is a condo, I cannot find an exterior drain exit anywhere around the building.”source ↗

“Given this setup, what is the best way to clear this blockage safely? Should I use a drain snake, or air pressure gun?”source ↗

“Is there any risk of blowing fitting joints apart inside the wall or forcing backup water into an open plumbing drain if I blow compressed air down through the cleanout tee?”source ↗

DariusKingK · r/hvacadvice · 1 upvotes

“What are some reasons that a safe t switch would fill so fast with water, tripping the switch and shutting off the unit?”source ↗

“I have already checked and cleaned the drain line, it was clear and now even cleaner. But the safe t switch is still getting lots of water so fast?”source ↗

Key-Art8054 · r/hvacadvice · 1 upvotes

“Once it stoped dripping from there is when I have the water leaking from inside ceiling below.”source ↗

“There is no visible outside outlet to shop vac.”source ↗

“Would taking the drain line apart under the sink and sucking up toward the unit help at all?”source ↗

“Will that be tough for me to get back attached though?”source ↗

Mamahart5656 · r/hvacadvice · 1 upvotes

“A neighbor had thier pan overflow and caused 20k plus in damages so im paranoid”source ↗

gassynotclassy · r/hvacadvice · 1 upvotes

“I have been having issues with water dripping from my ceiling due to a clog in the ac drain line.”source ↗

“That was when I figured out that the clog wasn't specific to the main drain line leading to the outside of the house, as the pipe perpendicular to the air handler was filled with sludge as well”source ↗

“The safety float switch housing was filled with water in both occasions as well, but the unit never shut off aside from the condenser fan outside not spinning.”source ↗

Shecky7903 · r/hvacadvice · 1 upvotes

“My minisplit is leaking right where the blue Styrofoam and black thing meet. I don't see any clogs and cleaned out the drain pan.”source ↗

“I'm not sure how to access this further or what to do next to troubleshoot.”source ↗

AllAboutAllosaurus · r/hvacadvice · 1 upvotes

“My secondary ac line (over my upstairs bathroom window) began leaking water causing me to believe my primary line is clogged however I had a hard time finding my primary outside and did not find it connected to a sink and found it in my washer room connected to the washer drain line however the tube is tiny and was wondering how one would unclog from this ?”source ↗

Ready_Cash_6807 · r/hvacadvice · 1 upvotes

“When I pour something in the tee it just gets trapped in that section and I can't pour too much in it since its not drain quickly, it starts pouring out again”source ↗

Acceptable-Draw-5468 · r/hvacadvice · 1 upvotes

“What a dream. Mines in the damn attic.”source ↗

russman286 · r/hvacadvice · 1 upvotes

“You may have a lot of "mineralized "buildup in the piping and perhaps also in the condensation pump. I had to replace my pump and snake a cable through the pipe to clear the buildup.”source ↗

TastyIncident8186 · r/hvacadvice · 1 upvotes

“I don't want to screw this up but I'm 99% sure the pipe with no cap is the correct spot.”source ↗

“Also, is it supposed to not have a cap? If not, is it safe to cover with something?”source ↗

“Lastly, see 2nd picture. I thought it only drained out of one pipe. What does the other connect to?”source ↗

Equal_Mixture_7807 · r/hvacadvice

“My parents have an AC unit that constantly has drainage issues causing failure.”source ↗

“However, it still often backs up and requires an emergency shop-vac about every 3 months (in addition to the monthly one).”source ↗

Odd-Wheel5315 · r/hvacadvice

“This second floor AC drain likes to get clogged and has a gurgling noise.”source ↗

Cyclevisor · r/hvacadvice

r/MechanicAdvice4 people · September 2026 – October 2026

“every time a downpour happens my Mustang floods.”source ↗

“Today, I removed the rear seats for the first time and also found out water was underneath as well.”source ↗

pizzaguy7878 · r/MechanicAdvice · 31 upvotes

“I want to clean the coils on the AC evaporator in my 2010 Nissan Altima, and I don't know the best way access the evaporator.”source ↗

“Can anyone help a car idiot like myself figure out how to locate this drain?”source ↗

Royal-Jaguar-1116 · r/MechanicAdvice · 1 upvotes

“when it got older and he would drive around, you could hear water swishing around inside the car where i think the convertible top let water into the side panels”source ↗

MikeD123999 · r/MechanicAdvice · 1 upvotes

“Debris and algae buildup clogs them and it'll drain into the car.”source ↗

FinguzMcGhee · r/MechanicAdvice · 1 upvotes

r/Plumbing4 people · September 2026

“Which pipe do I flush with distilled vinegar and then water?”source ↗

kalopibubble · r/Plumbing · 8 upvotes

“I am getting suds coming up in the condensation line during a laundry cycle.”source ↗

“Had a plumber come and take out initial clog but it’s still happening.”source ↗

“Plumber wasn’t able to get his cam down the cond line so I want to see if there is a partial clog there, then look down the laundry drain”source ↗

Dubz7474 · r/Plumbing · 1 upvotes

“My AC shuts off frequently from the drain float switch. I noticed the drain outside sometimes gets vacuum locked so I use a wet vac to suck out the water. I'm trying to figure out how to prevent this problem.”source ↗

Agile-Palpitation234 · r/Plumbing · 1 upvotes

“Right now my A/C drain line isn't draining and causing it to back up and leak into my hallway.”source ↗

Prgrssvmind · r/Plumbing · 1 upvotes

r/HomeMaintenance2 people · September 2026

“We have extensive water pooling from what I think is an AC overflow.”source ↗

“Pretty worried from the discoloration.”source ↗

dynavictus · r/HomeMaintenance · 1 upvotes

“So, I have water coming out of a secondary drain line above a window. My first step was using a shop vac to remove anything in the primary drain line at its exit, but nothing came out.”source ↗

“When I poured water down the pipe that is sticking up (circled in yellow) by the air handler, the water comes out of the secondary line.”source ↗

“Should I remove the panel and check the pipes near the air handler for blockage? I'm not sure how I would do that. Do I just call an HVAC tech at this point?”source ↗

between-seasons · r/HomeMaintenance · 1 upvotes

r/homeowners1 person · September 2026

“I discovered a leak coming from outside my house on the roof. Should I call a plumber or is there any way it could be fixed?”source ↗

Pineapplepizza91 · r/homeowners

How to clear a clogged AC condensate drain line

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