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Question DetailsAsked on 7/8/2015

Dripping sound after running the dryer.

Just recently, after a load of clothes has been run through the dryer, I hear what sounds like a dripping sound once the dryer turns off. The frequency of the drips gradually goes down after a few minutes pass, and after 10 minutes or so, the dripping sound stops. I don’t see any visible signs of water anywhere around the dryer, but have not pulled the entire thing out. My dryer vents through the roof, and I clean out the rodent guard religiously every 3 months to prevent too much lint from building up. Clothes are not taking overly long to dry, so I’m not sure what this noise could be. Any ideas or help are much appreciated.

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This can occasionally happen with roof-vent dryer ducts in very cold weather, where condensation forms on cold ducting in the attic and the roof draft hood, dripping down inside the ducting.


This time of year, I would guess this is more likely a case of expansion and contraction of the ducting against the framing, causing a ticking or clicking sound which can sound a lot like a drip.


Whether you worry about it or not is obviously up to you - if you are home handy, being careful not to overstretch any gas tub ing or electric cords (which you unplug), if you pull the dryer out and use a strong flashlight (6V lantern type MUCH better) shining on a small mirror angled in the duct, you might be able to look into the back of the dryer (after disconnecting duct), and into the duct to the roof to see if there is any water or sign of blockage.


You can also go outside and look at the roof vent and see (with dryer both on and off - best if done with strong flashlight (if on ground) to shine into the dark "mouth" while someone else turns the dryer on, to see if the flapper vent is opening when the dryer comes on. Could be rusted or stuck shut with lint. Since you say you clean out the rodent guard, sounds like getting up on the roof is no issue for you, so should be easy to check if the draft flapper is working and full flow of air is coming out - just turn dryer on Air or Fluff (no heat) or while doing regular load go up on roof and check. You can also (avoid dropping it) use a small mirror with flashlight from the top to look down into the ducting for signs of blockage - or rust if a galvanized duct as is likely. Aluminum commonly will not show much corrosion from condensation.

Another thing you can do - use a $10-15 METAL head (plastic not very good) stethoscope from a box store pharmacy department to listen at the dryer and at the duct to hear WHERE the sound is coming from - could be creaking ducting, a metallic flex duct out the back of the dryer snaking on the floor as it cools, of creaking metal panels or electric heat element (if electric) in the dryer itself.


One other thing other than making sure the lint screen is clean - feel if the clothes coming out on the HOT or PERMANENT PRESS cycle are coming out really hot - hottter than normal, like too hot ot comfortably touch - could be the temperature sensors have gone bad and it is overheating, so causing metal panels in the dryer to creak and groan as they heat and cool whenn they did not do so before - and may be doing it when dryer kicks on too but you djust don't hear it because of the drum rotation noise.


Otherwise, if you decide it might be a problem, an Appliance Repairman - Large is possibly your best professional. Second choice would probably be a Dryer Duct Cleaning contractor.

Answered 5 years ago by LCD




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