Product review (3 stars): Not quite good enough to eliminate detergent
Works somewhat. I didn't do a comparison with straight tap water. The unit works, as I can see the bubbles as advertised, and I can smell the ozone. However, I had to use an extra hose splitter and pipe into both hot/cold on the washing machine because water flow wasn't enough to produce the bubbles through one valve only. Once I did that, the unit works fine. One more thing is that occasionally the nozzle in the unit gets clogged and if that happens I have to disconnect and reverse the unit to "blow out" the clog in the nozzle, and this makes a water mess; this has happened three times in the 2 years I've had the unit. I learned that the main reason why the nozzle clogs is that I kept the power plugged in, which causes an electrical charge on the nozzle, and makes it collect minerals. When I started unplugging the unit it stopped clogging the nozzle. However, eventually the power adapter of the unit got one of the plug blades loose, and I had to tear it apart to repair it. To prevent that from happening again, I installed a socket with a switch so I can just turn the unit off with a switch. It's all very complicated, but finally working to my convenience. I went back to using a little bit of detergent though, because after 3-4 washes the clothes start smelling dingy. And since I'm allergic to detergent, I'm back to double washing. The reason I got this unit in the first place was to stop double washing, but that's the way the cookie crumbles...