Philips Sonicare Power Flosser 7000, HX3911/30

I "almost hate to say it" because, decades ago when I was a teenager, my mother bought me the very first Water Pik model ever made to clean my metal railroad track braces. I've been a daily, loyal user ever since.Because I was at a boarding school at the time, I saw the struggles of the other boys who had braces too: flicking with their toothbrushes, getting floss caught in the hardware on their teeth, with little luck. In two minutes, I had all the food blasted out of my braces. The only thing that felt better was finally getting my braces off.But I kept using it, to this day amazed how few people know about, understand, or are interested in water flossing. It's one of the greatest dental inventions ever, and everyone should do it. After many years, Water Pik was able to print on their box "50% more effective than flossing". I have no doubt that's true. I have tooth gaps that yield an astonishing amount of food every night stuck in there, all released and down the drain with water flossing. Which means: food NOT sitting in there and fermenting against my teeth and gums. Follow up with (electric) tooth brushing and you've done about the best that can be done.For a few years in my twenties, I slacked off completely, ignored dental hygiene, and things got bad. Canker sores, the whole nine yards. The only dentist I went to back then was so alarmed he said: "Come back when you have gums again", and told me to brush and floss vigorously before he'd do any other work. I got back into the Water Pik habit and, more than forty years later, my current dentist rates my gum health as very good. (I looked it up: the majority of people my age have gum disease of some kind. Plus, gum health contributes to bone health. I now have four dental implants. You can't get those unless you have the bone to support them. It's all intimately connected.)Anyway, make no mistake: Water Pik is an excellent product and a pioneer company. They invented the entire idea, and kept going. But the unit I most recently had was finally getting decrepit (after a long, long time of nightly use). I looked carefully before simply ordering another. And decided to try the Philips Sonicare Power Flosser 7000. I am glad I did.Powerful, remarkably quiet, convenient. (Note: I have NOT tried the newest Water Piks, so cannot directly compare.) It's actually nice, just before bedtime, to *quietly* water floss. That may sound trivial, but low noise does help for staying in a relaxed mood to get to sleep. I have been using it for a month, and am very pleased with the nightly results. The water pressure dial is great, easy to use, and "goes up to 11" if you like the full blast. (I do. Good gum massage.) On that setting, it will blast way harder than my previous Water Pik. Go gentler if that's your speed. The handle easily snaps magnetically into place when you're done, another convenience for less fuss.My personal tip: mix warm water with hydrogen peroxide. If you have the standard 3% hydrogen peroxide, about 1/3 that + 2/3rds warm water is about right for me. Then water floss with that, and rinse. I'm convinced the resulting oxygenation helps suppress the bacteria that contribute to gum deterioration, and my dentist's approval of my gum health is at least some evidence of that. Peroxide has long been used as a "mouthwash". (Like any mouthwash, just don't swallow it.)Dental health, the daily job. Believe me when I say: water flossing is a huge convenience, and this product is a first-rate device for getting it done better and faster.

Has multiple useful modes, and automatically turns off. On its highest mode I've seen it spray off hardened on plaque. It's a bit bulky though so it's hard to take it with me when I travel.

WaterPik pioneered the water flosser, and I've been loyal to them for decades. Daily use of a water flosser, combined with plackers as needed and brushing, has given me healthy gums that almost never bleed when flossed. WaterPik's usually have lasted me a few years, but I've had trouble with the last two machines I've bought from them. One of them leaked and the other stopped working altogether after a two-month trip away from home. I tried an even cheaper knockoff and it was terrible. So I took a deep breath and paid four or five times as much for the Philips Sonicare. I was worried about the capacity of the water reservoir, since it wasn't given in the specifications, but in fact it was fine: about 1/2 liter. The Philips is quieter than any of the others but powerful, and without the hammering effect of some other machines. It's beautifully designed and engineered. I've only had it a couple of months so I can't speak to durability but it certainly looks like it's made to last. It feels like a wise investment.

I bought two Philips Sonicare water flossers—the first (model HX3911/30) in November 2022 and the second (model HX3811/20) on February 1, 2025—both from Amazon. The newer unit began leaking from the bottom within weeks, and the older one started leaking right around its two‑year mark (before warranty expired, but I only had time to report it after moving). Both units leaked so badly that they were unusable.My attempt to get a refund or replacement turned into a 45‑minute ordeal:Philips ChatBot pointed me to generic troubleshooting links and then insisted I chat with a live agent.Agent requests: model and serial numbers (despite me already providing model), proof of purchase, photos of the defective unit (which I’d already discarded), full Amazon invoice, phone number, address—over and over.Warranty fine print: they denied refund for the 2022 unit due to a 90‑day “money‑back guarantee,” even though it died just shy of two years.Escalation: after repeated follow‑ups and “escalating” to a supervisor (who conveniently went on lunch break), I was offered a 30% voucher “instead of” a replacement or refund.Ultimately I gave up and bought another brand. Two faulty units, leaking from the bottom; rigid 90‑day refund window; no real replacement offer; and a voucher after being bounced around for almost an hour. Save your time and money—look elsewhere.

I loved it except for one continuous problem....it jams and I have to hold the nozzle upright near the sink until the pressure returns and the blockage is clear. I have owned my model for nearly 2 years and this began about six months into owning it.The pressure was perfect, much less noise than my Water-Pik, and it definitely cleaned much better.For the price I would have expected this unit to last for years. The blockages /jamming were very annoying and then it just quit working all together.My Water-Pik which is much older has lasted for years, with no problems...except that the noise drives me crazy. I just read that they may have pulled this model which will be very upsetting, but I do have a concern with how it jams nearly every time prior to using it. I purchased new tips and followed the troubleshooting, but this did not change the problem I was having. Now I need to purchase a new unit all together and I am not sure what to purchase.

I use this water flosser several times a day. It’s actually addictive as it cleans between your teeth and also provides stimulation for your gums. If you want a healthier mouth this is the ticket. I love my flosser and highly recommend it.