This has been working as advertised. I had a terrible smell in my hot water and this system eliminated the smell within the 24 hours.
I got this because I was having trouble with the rotten egg smell. Installed in in under 30 minutes and it eliminated the small that day! Very happy with the results
4 weeks after install and water remains odor free.
My son purchases this item after trying several things to get the terrible rotten egg smell out of his water. He said it took about a week but the smell disappeared completely. I purchased one afterwards and found the smell was gone almost immediately. My sister purchased one for her new home and it started working the same night. She now enjoys her showers again. This is my second one for another smaller heater in another part of my house. This thing is a life changer. Don't be afraid to purchase.
We had intense sulfur smell in our water. We were constantly having to flush the water just to make the water bearable. We installed this and almost instantly the smell was COMPLETELY GONE. Our water is 100% odorless now. Do yourself a favor and buy it.