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Posted on Feb 18, 2009

Dryer vent pipe has condensation issues.

I have a 2005 whirlpool duet dryer. I have a lot of condensation in my vent pipes and at all the bends in the vent pipe where it was taped/sealed by the HVAC guys, it now drips water. I have a large family (7 total) and I clean the dryer lint screen before every new load. There was also a small puddle of water under my dryer and also in my flexible exhaust hose. I have never taken a part my dryer to clean anything out inside. What do you think?

  • jbbrim Feb 19, 2009

    The vent pipe in the wall is a 5" pipe because it is a long run of pipe that penetrates out the roof. The city inspector had the builder make the vent be a 5" ILO a 4" because of the long run. We have not had a problem with condensation for the last 18 months that we have been living in this new home using the same dryer. Is the lint stuck in the bottom of the dryer? Is our dryer output just poor? New fan motor?

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  • Posted on Feb 18, 2009
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With all of that condensation I'd be suprised if your clothes were getting dry at all. A lot of times cleaning the dryer vent is not enough. It sounds like your vent is really long. Long vent lines have a large potential for lint clogging. Check the airflow at the end of the vent at the side of the house. Your'e probably getting very little. For a run like that we always attach a electric leaf blower to the dryer side of the hose and let it run wide open for about 5 minutes. This should help to break up any clogged up lint. You can check your results at the end of the line on the ground. If it doesn't do much you may want to consider replacing the vent hose. Hope this helps.. Thanks

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It sounds like there is a hole in your machine. Please check any pipes for tears and any unintended holes within your dryer. Thank you.
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Is the dryer gas or electric? But you can also try cleaning the vent tube the pipe that goes outside also the pipe that goes into the dryer it's a good chance it's full of lint.
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Clean the Lint Filter or Condenser

check inside it may have a lot of lint build up in it, check the vent to outside and be sure there is no sharp bend in vent pipe to make it over heat. the straighter the better !
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Dryer would be either leaking from vent or due to condensation. The vent may either be blocked. The water is coming from the clothes you have dried in the dryer and it has no where to go.
You need to dismantle the vent and clean it, replace it with new vent. The dryer may now be consuming more time to dry the same load of clothes. By correcting the venting problem you will solve the water problem and shorten your wash day and save on electricity as well.

Another issue is condensation which usually appears on the dryer vent pipe colder climates. As the warm air from the dryer is vented to the outside, it must be protected from the cold temperatures outside. If your dryer vent pipe is not properly insulated, the air that is being vented out will turn into water when it comes into contact with the cold pipe outside. This results in condensation and dripping water. To resolve this, you must insulate your dryer vent pipe along its entire length. This will ensure that the hot air from the dryer does not undergo temperature fluctuations, and no water will leak into the vent pipe. Hope this helps... Please post back if you need more information.

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You might also want to look at the dryer to see if the internal exhaust pipe came loose during transport and installation. It might be possible that the exhaust vent pipe inside the dryer is loose or off the fitting. An easy way to check this is to remove the exhaust pipe from the back of the dryer and (with the dryer unplugged from the electric outlet!) check by looking into the back vent on the dryer. You can also feel inside to see if it's loose, etc. Just be carefull as the metal pipe could have sharp edges, so wear some gloves to be safe.

As this is also a new dryer, you might also contact the place where you purchased it, as there might be an quality issue that they've received a service bulletin on and could provide you with further assistance.

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If the duct inside your wall is rigid metal all the way from the dryer to the house exit you need to do nothing to it . Replace the vent between the dryer and the wall with rigid metal 4" piping or hard flexible aluminum piping. If the duct inside your wall is either of the least effective types you need a new run of vent for the dryer to avoid a fire.

You can't use white plastic or flimsy flexible aluminum that feels like aluminum foil when you touch it.
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