Water heater question hose question

Does anyone know what this what this hose is for? It was on the side of a water heater.

double post, replied in plumbing section

Your picture doesn’t show where it originates from. Hard to tell.

One post will get the job done. No need to post the same question multiple times.

I didn’t know you controlled the forum, not that I do I will come to you for the rules.


You’re welcome to play dumbass if you choose. Don’t be surprised if you get treated as one though.

Ok, man. here we go with tough internet dude. you have a good one. If you don’t like my question, save both of us time. just mind your business. Internet expert. I wont talk tough over the internet. best of luck.


So do you think you got better or more timely information by posing the same question twice? I didn’t tell you that you couldn’t do it, I told you that there was no need to. There certainly was no internet tough talk here. I don’t know where you came up with that one.

Do your thing. You’re welcome to be as dumb as you like. If you find advice threatening, by all means, ignore it.

The manufacturer model info is printed right there on the product. I recommend you take a few minutes, go online and read the installation requirements for that appliance.

That looks like a heat pump water heater and those usually require a condensate drain line. But it doesn’t appear to be connected to the water heater, but can’t tell by the picture. Either way I would just verify whether or not the condensate drain line is present, connected and draining to the exterior:-)
Now that I’m looking closer at the picture I can see the black barb T coming out the top where the condensate outlet is located and blue drain line appears to split in both directions.

You’re correct. It is a hybrid electric water heater and that is a condensation drain. It was answered in the duplicate thread.

I hope you wrote up the missing TPRV drain. Also can’t see if there is a cold water shut-off valve.

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That is the obvious thing I saw.

I did the well water test and Wood destroying pest inspection. Didn’t do the actual inspection. But notice the water heater and wanted to know what was going on with it.

Thanks for the reply.

From the picture it looks like a knob which is generally used for the taking water in or out.