The PVC drainpipe from my Central Air Conditioning unit is over-flowing.?
Answers:
Joshua hit the nail on the head. Let me add some specifics to make your job a bit easier.
Find the end of the pvc drain line, which should be located near the outside (condensing) unit. Place the suction hose of the high-powered Shop Vac (5 h.p.) over the pipe and wrap it with duct tape to make it air tight. Crank on the vac until all the water and obstructions are cleared out.
Make sure there is no standing water left around your air handler that can lead to a mold problem. Install a pvc "t" near the air handler and add 1 cup of bleach every month to prevent algae build-up. Rinse with water after each treatment to prevent chlorine gas from being drawn into the system.
Other answers:
shop vac works wonders....or compressed air works but shop vac is easier...then if you will pour a little bleach in the drain every few months it will keep the build up at bay in the future...
shop vac works wonders....or compressed air works but shop vac is easier...then if you will pour a little bleach in the drain every few months it will keep the build up at bay in the future...
Compress air at the entrance or exit, or a vacuum wet dry at the exit.
You can try to suck it out, or reverse the flow of Vacuum to blow it back, at the exit.
Do you know for sure that is the drain pipe for your AC unit or hot water heater.This just happened to me and the drain pipe is located in one of the bathrooms.Actually there are two.The main drain empties out under one of the sinks.It tees of the drain flush line.The backup drain goes outside and drains from the cornish,that is the flat area as you are looking up where the shingles stop.It is the bottom side of the overhang.If it is the drain from your AC unit then one of the drains are clogged.Rent a "snake" and run it in whatever PVC drain you need to.Sorry to say but on this end my experience was its a *****.Hope the best for you.
Listen to airboy hoss, he knows his stuff and is right on the money. I have read over the other answers and apparently nobody knows of a third choice.
I suggest you clean your drain as airboy suggests, but where he and I differ is in the prevenative maintenance end of things. Bleach does a great job of killing germs, but not so great if the clog is from something else.
There is actually a product on the market sold under the brand name of "KONTROL". It is actually a tablet that sits in the drain pan and slowly dissolves over the summer and prevents the clog in the first place. Kinda like what a urinal cake does in the bathroom.
I do not know where you live but "KONTROL" is readily available through Johnstone Supply, a national wholesaler of heating and cooling products.
I go for the snake treatment.
Bugs or small animals could have gotten in the pipe.
Think spiders.
That & dust.
Then flush with clean water. If possible.