Question about Goodman CKL60AR60 Air Conditioner

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Need location of drain pipe on horizontal attic a/c unit?

Have Goodman A/C unit and pipe clogged. Purchased drain cleaner safe for PVC pipe but do not know where to pour drain cleaner in unit located in attic (lays horizontal). Thanks!

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  • lilnicety May 31, 2009

    Thank you so much! I will try this!

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If you have a shop vac (wet vac) I suggest finding the drain outlet and sucking the restriction out. However if you don't then you need to open the air handler (coil) and pour about a cup of Bleach, not drain cleaner in to the coil drain pan. The restriction is likely in the trap ( U shaped piece of pvc). Good luck!

Posted on May 30, 2009

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Why does my home A/C unit result in a constant stream of water coming out of the overflow drain? I've had the same unit for 5 years, and it seems that it drains water in ever-increasing amounts. Als


Sounds like it is freezing up. Kind of hard to say since you did not say whether it is a central heat and air system. My overflow was constantly draining onto my patio from overflow. I crawled up in the attic and followed the pvc pipe where it came in from the outside and closer to the central unit in the attic I drilled a hole in the 90 degree elbow of the pvc and unclogged the pipe which was frozen from running so long. Then I covered the hole with silicone. no more leak coming from overflow

Dec 27, 2014 | Heating & Cooling

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Drain inside house from a c is over flowing.central air



I am a certified HVAC Technician. I have worked in the field since 1996. I have seen this hundreds of times, if not a thousand times, in the past. Every central air conditioning and heat pump system comes with TWO drain pans, The MAIN drain pan is located within the AIR HANDLER (blower) UNIT, while the EMERGENCY DRAIN PAN is extremely LARGE and sits under the ENTIRE AIR HANDLER (blower) UNIT. The ONLY time water will be INSIDE an EMERGENCY DRAIN PAN is when the MAIN DRAIN PAN condensate drain line is CLOGGED, causing the MAIN DRAIN PAN to overflow. What causes the drains pans OR the drain lines to become clogged is slime and scale from the condensate water as well as debris from within the attic that may have either been blown by the air or may have simply have fallen into the emergency drain pan; or some insects from the out of doors have traveled up into the PVC Drain line and built a nest on the downward side of the P-trap. The P-trap is designed to prevent critters from entering your home through the PVC drain lines. Most CLOGS occur at the P-TRAP location.

The BEST thing to do is:


1. Locate the WHITE PVC drain pipe outside your house and ensure there is NO water draining from it.

2. Locate the same WHITE PVC drain pipe inside your house. You should notice a "TEE" where two WHITE PVC drain pipes merge into ONE WHITE PVC drain pipe.


Follow the below steps, in the order shown:


A. FIRST, find another person to act as your second set of eyes at the end of the WHITE PVC Drain Line that is located outside of your home. That person will be looking for water or debris to EXIT the end of that WHITE PVC DRAIN LINE.


B. SECONDLY, locate the WHITE PVC "P-TRAP" inside your house. It is normally located within a couple to three feet of your indoor air handing (blower) unit.

C. THIRDLY, very gently lift the entire WHITE PVC drain line up in the air as high as you can without breaking it, and slam it down onto the rafters or attic floor or garage floor. You are attempting to dislodge the CLOG within the drain pipe WITHOUT having to actually CUT the PVC and without damaging or breaking the WHITE PVC. Depending on how old the system is, it may or may not be brittle; and it may not take much to damage or break the PVC, which will cause leaks. So, be very careful at this point.


D. Ask the person outside if anything has started to EXIT. You can ALSO usually hear water start to drain if you put your ear up to the drain line. If the person said "NO"and if you don't see the water level getting LOWER in the EMERGENCY drain pan, then REPEAT step "C" above.

E. If the person informs you that there IS water now starting to exit the WHITE PVC DRAIN PIPE, you should then wait until all water has drained from the EMERGENCY DRAIN PAN; and then pour at least 1 quart of BLEACH down that drain, from the EMERGENCY DRAIN PAN exit. The BLEACH will further clear out any SLIME which may be remaining within the "P-TRAP" and will also CLEAN OUT and DISINFECT that drain line.

If the above steps do NOT work for you, then prepare to go into the next LOGICAL phase of your attack. Please NOTE: I am limited to 10,000 characters in my response, so I'll repost additional STEPS in another RESPONSE. Good Luck!!!

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1 Answer

Where is the drain pipe on my a/c? Ruud #UBHC-21J11SFC. Do I have to take something apart? The pan under unit fills up and overflows. It is leaking through the ceiling under the unit. I am a woman. ...


The drain or drain piping (usually PVC piping) is under or on the edge of the drain pan, under the unit. It has to exit outside some where. Either down thru the wall into the crawl space and out thru the foundation wall. Or thru the attic to a gutter outside on the edge of the soffett. Look for white PVC piping outside the house where I indicated. Then you can use a garden hose and high pressure to unclog it from at it's termination point, by back flushing it.

Hope this helps you. Please let me know. Thanks

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Where is the float switch on a Goodman GPG12? My heat will not come on and the last 2 times I have called the HVAC guy he said it was the float switch. It is 8 degrees here and I need to get this unit...


Hello, a float switch is used for a condensate pump or humidifier does not have anything really to do with the furnace not sure what the hvac guy is refeering to. If your inducer motor is running but nothing else is happening it is very possible that you pressure switch is open, this could be due to a obstruction in flue pipe, small hose going from inducer to pressure switch is loose, obstructed, or has condensation in it, otr the switch itself is bad. if the inducer is not running you will need to check if you are getting 24 volts between the R and C terminal on the integrated control board if not the transformer is bad if you are then most likely its a issue with the control board.

Feb 10, 2011 | Goodman GMS90703BXA Heater

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Dont have a book to tell me how to install heat exhaust pvc or tin


most furnaces require 4 inch vent pipe to be installed ... you can use pvc as long as it is rated for the temperature... there should be an obvious hole in the furnace where the enducer draft motor pushes the exhaust... if this is a upflow unit in the closet you will need to connect to the bell housing of the exhaust and start running your pipe up and out side .you will need double wall pipe rated for heat and or rated pvc if installing pvc... once outside make sure if on rood you have a roof jack for pipe to go through and a collar around pipe to keep water from running down and then a cap on pipe ....if it is a horizontal unit done the same way except your already in attic and don't have a as far to go it can run vertical and horizontal try to minimize your 90 degree turns and is best to keep it angled to prevent moisture from buiding up in pipe...

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1 Answer

We have a 1990 60,000 btu HVAC with the unit outside and the 2nd half in the attic. Water keeps accumulating in the attic below the attic unit and overflowing into the ceilings and wall. It cools fine...


Hi, this is a very easy problem to solve. The air handler and evaporator coil is in the attic and this is where the condensation collects in the pan. At some point on this pan is a 3/4" drain for this water to drain to the out side of the building. Its plugged up and running over onto the sheet rock causing all of this damage. Someone needs to get up to this unit with an air tank with nozzle that you can buy at a auto parts store that they fill with air to air up tires and blow out this line. You can walk the perimeter of the building and you will find this drain coming out the wall, it will either be white PVC or copper, a elbow that drains. The pan will need to be cleaned out after the drain is unplugged by flushing with water or use a brush and try and clean it up, what ever is easier to do. This is the only way to solve this as I have seen this happen so many, many times. Believe me, this will take care of this problem. Please don't forget to rate me and I know you will be kind. I will check back in with you and you can keep me posted. I wish you the best.
Sincerely,
Shastalaker7
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My attic Goodman Air Conditioning unit is leaking down through the ceiling drywall. What are some of the possible problems and how do I fix them?


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1 Answer

I have a Weather King AC/Furnace in the attic that's dripping water into the drain pan. When we purchased our new house it came with this unit and it never dripped ater. Now, the water is dripping towards...


I assume it is dripping water when the AC is running. If you look at the attic unit, there should be a PVC pipe running from the unit - probably an insulated PVC pipe. This pipe probably goes across the attic to the edge of the house and drains outside. The drain pan may also have a drain pipe, but the one on the AC unit is the issue, and is probably plugged. Go outside and see if you can locate the AC drain pipe. See if the ground is wet below the pipe and if water is steadily dripping from the pipe (with AC running). If the pipe and ground are dry, the pipe is plugged. If you have a wet/dry vac, try connecting it to the drain pipe outside to see if you can **** the pluggage out. If you can get it clear, water should start dripping out of the pipe. This same thing happened at our house. I decided to cut the pipe in the attic, and add in a PVC isolation valve, tee, and water hose connection with plug, so I can valve out the AC unit from the pipe, remove hose connection plug, and hook up a water hose and flush the line to outside. Lowe's sells all of the PVC pipe fittings. The water pressure from the hose will always flush out the algae and crud to the outside of the house. I can also remove the plug and pour a cup of bleach down the drain pipe every couple of months to keep algae growth in check. I also cut out the trap (u-leg) from pipe in the attic and purchased a ready made trap a Lowes (the contractor who built our house had made a lousy homemade trap). I purchased a few PVC elbows and installed the trap on the drain pipe outside. By the way, our AC drain pipe comes out of our wall outside and drains near our outside unit. Our secondary drain pan drain pipe comes out outside from an eave on the side of the house. I don't know what you drain line looks like (it may have a port to add bleach, or some cleanout provisions, maybe not). If you choose to modify/improve it, then make a sketch of it, go to Lowe's and get the PVC parts you need + PVC pipe primer and cement. PVC cement dries fast. Remember, the pipe must flow downhill from you AC attic unit. You can use a regular wood saw to cut the pipe. I hope this helps you. You need to keep the drain line clear as algae will continue to grow in it. Pouring bleach in the line every month or two helps. You also need to check maybe once a month that the line is draining properly (check to see if dripping outside). You can get some serious water damage to your ceilings if the water backs up and overflows. I discovered that our drain line was plugged just in time as our drain pan drain line was also partially plugged and drain pan was about to overflow.

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1 Answer

A/C unit is working perfectly, but the past days is leaking water inside the house. Is probably the drain right?


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1 Answer

Air handler will not run clogged up drain?


the air handler is in the attic or in a closet right? most likely the drain switch mentioned is in a pan located underneath the air handler, the switch is actuated when the condensation drain tube is clogged, ( when it cannot drain the water out of the pan), the float switch is actuated and the unit shuts off to prevent any more condensation, thus preventing overflow into your house/apt. the drain line can be sucked out by using a simple wet/dry vacuum of any kind from the end of the drain line ( usually a 3/4 inch PVC pipe located somewhere outside ).

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