I bought the VEVOR 15L. I ran it on a \"twist-o-flex\" watch band last night. It got all of the gunk out of the segments. That worked great so I ran it on a wrench set and they cleaned up nicely. I was just using Mr. Clean. I just used hot tap water and so didn't really test the heater. The noise wasn't as bad as I was expecting after reading the other reviews. It basically sounds like you're running water into a stainless steel sink, with an aerator on the spigot. It's actually a little bit louder with the lid on, so I left it off. The hose fitting fit fine. So far so good.