Hot Topics: Why Are my Washing Machine Hoses Corroded and Clogging?

A couple of corroded washing machine hoses.

Here on we enjoy providing a place where home improvement novices and experts can come together to share ideas and advice. Inside our Forums, users can browse threads to see what exchanges are taking place on a topic of interest or start their own dialogue by posting something for the community to take part in. With over 250,000 members and counting, this resource is quite active so each week we highlight one of the conversations that may just help you with that next DIY project.

When three difference sets of washing machine hoses become green, corroded, and clogged, is the issue with the water supply or the hoses themselves? Or the washing machine? The forum troubleshoots the issue.

Original Post: Washing Machine Hoses Clogging and Corroding

Srponies Member

We installed a new Whirlpool Cabrio washing machine. At that time we upgraded the rubber hoses to anti-flood braided hoses.

Those hoses became clogged and the washer screens were clogged. The small ports of the hoses were too difficult to clear out, so we replaced them with standard braided hoses.

We have had problems with three different sets of hoses—the connection at the washing machine becomes green, there's some sediment/green buildup on the washer inlet screens, and the I.D. of the hose is caked or clogged. The hose connections have been developing minor drips/leaks due to the corrosion.

Our house has a well and water softener. We also have a whole house water filter consisting of a 20" sediment filter and another 20" charcoal filter. None of the other fixtures have this problem. Also, the rubber hoses from the previous washer were very clean—after using that washer for 7 years.

Can someone give some direction on this. Would this be a water problem, or a problem with the washing machine?

Photo is of the rubber hoses that we have used for ONE month. They are corroded and dripping at the washer connection.

Corroded washing machine hose.

Highlights from The Thread

Pilot Dane Group Moderator

Definitely a water problem. You MUST use hoses that include a screen. It is much easier and cheaper to clean or replace a filter in the hose than a service call to have the valves for the washing machine replaced.

Does your house have copper pipes? If so that is probably the source of the green copper deposits you are seeing. I would check your water's PH as it's possible your water is dissolving your houses pipes. In addition to causing trouble with your washer it thins the walls of your pipes and leaks may become a problem.


The washing machine had screens at the inlet valve. We ended up removing those because they were really hard to clean. We are using screens that are part of the washer.

Is there a reason we would only find these green deposits at the washing machine? No other sink or shower (aerators) have the problem. No green buildup on the toilets float/ fill valve.

pugsl Member

Replace the screens in washer valves—they are in there for a reason. You get that junk in washer valves and they will leak into the washer and it could overflow...The valve could cost over 100 dollars without labor depending on which washer you have...Washer usually uses more water than other appliances and clogs show up there first.


At this point our washer is leaking past the inlet valve slightly. We are using screens where the washer hoses attach to the washer. We will have the inlet valve replaced once we figure out the other problem.

I had read that corrosion/electrolysis at the washer hoses could be caused by an electrical problem with the washing machine. Faulty internal switches or wiring cause a voltage leak that uses the water as a path to ground. I don't have any idea how to test for this fault.

I am stumped as to why our old washing machine that we used for seven years did not have this problem at all. What would have changed to cause the problem?

Pilot Dane

If you are concerned about electrolysis, unplug the machine when it's not in use. But electrolysis is pretty difficult in fresh water, with rubber hoses and the fittings where the hoses connect on your machine are plastic.

mcculloch Member

I'm having the exact same issue with my Cabrio washing machine. Gone through 5 or 6 sets of hoses. Even tried Floodchek hoses. They corroded and started leaking in about 6 weeks. I'm on rural water with another washing machine in the house. It works fine. I would think it has to be a washing machine issue.


Today I took apart my washing machine to replace the water inlet valve assembly. The machine has been (along with corroding the hoses) dripping into the tub when it was turned off. Replacing the valve assembly is not difficult, and fortunately there are several YouTube videos that cover the process.

I did find that one area of the valve has been leaking through the electrical contacts. I believe one of the videos mentioned it being a thermo sensor. Where the wiring pigtail plugged in, it was corroded.

Corroded electrical contacts of washing machine.

I cleaned the wiring pigtail with baking soda/water. Then reinstalled the pigtail with some dielectric grease on that connector. Installed the new inlet valve and new supply hoses. I am really hoping that this faulty inlet valve assembly has been the cause of the problems.

Wiring pigtail for washing machine.


I would suggest that anyone experiencing the screen/hose clogging problem should check their inlet valve. It is very easy to remove the "control panel/user interface." Just unscrew three screws in the back and tilt the panel forward. Then you can inspect the valve for any leaking around the solenoids...I just checked mine. I haven't checked since the valve assembly and hoses were replaced in March (5 months). The hoses are in GREAT shape. No corrosion. No clogging of the filters. Looks like the replacement of the inlet valve assembly (that contains the leaking temp sensor) did the trick.

New washing machine hoses.

Finish reading here: //