The LiteFlush is not necessarily "quiet", but I don't think it's "loud" either. In fact, I don't think it's much louder than the pumping we used to have to do. But the noise
is very fast-- a 1-2 seconds to fill, 3-6 seconds for the drain/macerate/flush/repeat process. The latter process is the louder of course. At first I thought that I might instruct folks not to flush at night, but it really isn't that loud so I never bothered. (And I'd rather not have that stuff sitting around all night anyhow...)
I am actually quite happy with it. While we were living onboard during November & December, we had several guests and I really liked how easy it was to operate. The old pump-style seemed to intimidate people. The LiteFlush does not.
I will tell you that when we got to Tortola, we did have one issue: one of the heads clogged up. My DH had to take the whole thing apart to get out a clog. He spared me the job of trying to assist him, so I am not sure which part exactly on the toilet was clogged. He believes the clog was due to a buildup of calcium deposits in the pipes from the saltwater and brackish flushwater mixing with the, well, you know... (If you want more details, I'll get them but I'll spare you TMI right now). We've had these buildups in our pipes in the past. He's attributing the clog to poor maintenance
on our part. We'll be treating the lines with vinegar or acid more frequently in the future.
We have not had another issue with that unit and we never had an issue with the second unit in the forward head. I have a friend who has one on his power boat
. He's also a big fan of the LiteFlush. He has never had an issue with his and his was installed several weeks before ours was.