Philips Sonicare Power Flosser & Toothbrush System 7000, HX3921/40
$249.96 Original price was: $249.96.$24.99Current price is: $24.99.






















Discover the power of Sonicare with the new Philips Sonicare Power Flosser and Philips Sonicare ExpertClean 7300 in one — up to 270% more effective than manual toothbrush and floss for healthier gums! The Power Flosser creates an X-shaped stream of water that reaches deep between teeth for a gentle, thorough clean. This X-shaped water stream, known as Quad-Stream technology, covers more surface area for a faster, deeper clean versus manual floss. Complete your clean with the Philips Sonicare ExpertClean 7300, designed to give you an exceptional daily clean and help you keep up good brushing habits.
Product Dimensions : 8.62 x 7.48 x 10.43 inches; 3.27 Pounds
Item model number : HX3921/40
Date First Available : March 1, 2020
Manufacturer : Philips Sonicare
ASIN : B08LJ6CBSW
Best Sellers Rank: #101,732 in Health & Household (See Top 100 in Health & Household) #215 in Power Dental Flossers
Customer Reviews: 4.0 4.0 out of 5 stars (1,571) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Up to 270% more effective than manual toothbrush and floss for healthier gums.
Quad Stream delivers four wide streams of water that penetrate deep between teeth and along the gum line, covering 9x the surface area of single stream water flossers
Water Flosser removes up to 99% of plaque from below the gum line
360-degree nozzle rotation ensures you can reach every corner of your mouth when water flossing
4 flossing modes, 10 intensities and includes ExpertClean 7300 with Bluetooth Sonicare App progress report and connected charging dock.
9 reviews for Philips Sonicare Power Flosser & Toothbrush System 7000, HX3921/40
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Jillian James –
Dental hygienist approved and recommended!
I’m a dental hygienist and had always been sold on Waterpik brand, decided to give the Philips water flosser a whirl since I love their electric toothbrushes and I’m very happy I bought it. It’s a sleeker design, water capacity is perfect, very easy to use, love how if you need to stop in the middle of water flossing, you flip the switch on the handle and it also turns off the motor in the water flosser so it’s not burning it up. Amazing pressure. I feel it cleaned better than any waterpik brand I’ve tried. Doesn’t look bulky on the country. Also easy to travel with because the tank easily comes off making the water flosser not as bulky. 10/10 from this dental hygienist
David –
Great flosser
Works great, just what my dentist recommends
Steve Anthony –
Lasted 5 months then died.
The Sonicare Power Flosser 7000, HX3911/30 worked great for 5 months then decided to retire to that great flosser in the sky. Yes, while the motor kept running, no water was being dispensed to the hand-held wand. The unit was not dropped and/or misused in any way. I did not expect this device to last forever, but a 5-month lifespan seems a bit unreasonable. I called the Consumer Care Support center on Sep 18, 2024 and spoke with a representative named Kathy. After explaining the details of my situation and having me complete some basic troubleshooting procedures she confirmed that the unit has malfunctioned and I was eligible for a replacement. Case number 60-0037401231.On Sep 26, 2024 I was contacted via e-mail from someone named Kaye at the Consumer Experience Team, Phillips North America stating that this product will not be available within the next month and there is no indication when it might become available. I was asked if I would accept the Philips Sonicare Cordless Power Flosser 3000 as a substitute replacement. This item currently sells for $69.96 on Amazon. The item for which I am seeking replacement is currently available on Amazon for $139.96.Needless to say I declined the offer to accept a dissimilar item valued $70 less than the item I purchased. I don’t understand how Philips is unable to attain and send me the same model item I purchased and had fail after 5-months when the exact item is currently available on Amazon.Again, this product worked great during its very short lifespan. Perhaps someone else will have a better experience with the product itself and/or the Philips Consumer Experience Team than I did. For me, I’m done with Philips products and will consider this experience a lesson learned going forward.
HandyGuy –
I almost hate to say it – better than my Water Pik
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.
Michael Malone –
I have been waiting to write this review but first I wanted time to experience the flosser with it’s various features and nozzles. Now that THAT has happened, here is my review. I should tell you that I have used a WaterPik flosser for many years. I always thought that WaterPik had the edge over water flossers UNTIL I tried this Philips water flosser.I got to tell you that I can’t say enough good things about this 7000 model. The first and most important to me was the quietness of the water pump. I now can floss late at night without waking up the house. This model has all the bells and whistles: 4 modes, 3 nozzles, 10 intensity settings, a 30-second pacer (if desired) that indicates when you should move to the next quadrant of your mouth, Pulse-Wave Technology for two of the modes, Magnetic Docking for the handle when not in use, a 600 ml reservoir with a hinged lid, control of the water flow on the handle.The first three modes: CLEAN, DEEP CLEAN and SENSITIVE are used to remove food particles from around your teeth. The fourth mode, MASSAGE is to use water in a gentle flow to massage your gums. All the modes are wonderful so it is really a matter of personal choice as to what you prefer at any given session. The nozzles: the Standard nozzle ejects water like any water flosser, the Comfort nozzle is quite unique in the sense that it can touch your tooth and not slide off, as the rubber end acts like a brake for an exacting wash, the Quad Stream nozzle works similarly to the Comfort nozzle because it has a rubber tip as well but the squirting pattern is in four directions at once. I am NOT convinced that the Quad Stream nozzle is BETTER than the other nozzles, just different.I should also note the three nozzles come in a very practical plastic case with the intent to store them in the case between flossings.The Pacer, which essentially is a timer that indicates that your 30 seconds are up and time to move on to the next quadrant of your mouth. The indication is in the form of a 1-2 second pause of the water pump as opposed to an audio beep. Personally, I turned the pacing feature off.Having a hinged lid on the reservoir ….. I really hadn’t thought about it before as the WaterPik units have a detached lid or cover. But I actually close the lid when I am flossing now because I believe it keeps the water at a stable temperature without cooling.And finally, the Magnetic Docking of the handle is a really cool and simple feature. Click and it is attached to the unit.In some of the other reviews I have read, people have mentioned water leaks. I have not experienced unintended water leaks from the handle, the hose or the reservoir. Mind you, I use ALL 600 ml of water each flossing and wipe everything dry until the next time as opposed to some who leave a supply of water in the reservoir so they don’t have to keep filling it. Whether that contributes to leaks, I have no idea.When you are done flossing, detach the nozzle, blow out any drops of moisture and store it in the case. Shake out the handle in the sink ….a couple of drops of water may come out ….wipe the handle and the reservoir dry until next use.Anyways, as you can conclude, I am TOTALLY happy with my purchase. It truly DOES blow WaterPik away and the manufacturer has a two-year warranty.UPDATE – a little more than 1 year later.So just this month, my water flosser stopped working. Nothing happened when I turned it on. At the same time, water started pouring out from the base of the unit. I moved it immediately to the sink and emptied the remaining water from the fill tank. Being mechanically inclined, I decided I would take the unit apart and see if I could isolate the problem. Phillips used funky screws to put the unit together, but I had the necessary tools to dismantle it. Most of the parts in the unit are plastic if it is not related to the electronics. I DID find the source of the problem, which I will show you in an attached picture. One of the plastic components in the unit developed a crack allowing the water to leak over the internal parts of the unit and out the vent holes. Now this unit, as I mentioned in my previous comments has a 2-year warranty and I COULD have pursued this avenue but I decided that this process would likely be lengthy and leave me without a water flosser longer than I would want to be. So instead, I ordered another Phillips flosser, different model but I will have it within a couple of days. We shall see how long this new one lasts and then I will make a determination whether to switch brands or not. Will keep you posted.UPDATE # 2Just for the fun of it, I called Phillips Customer Support this morning to report that problem I had with the model 7000 and also explained to them that I had dismantled it and found the source of the problem and was happy to send them the pic but as expected, dismantling the product voids the warranty. I expected this would be their response so I wasn’t surprised. They DID send me a 20% discount on a future purchase from their web store. I had a look at what flossers they had available and they were the cheapest barebones models that they offer ….. not at all what I would normally buy …. lol. We will see how long my new 5000 model lasts. Will keep you updated.
Ihab –
it’s a very nice item to have..but unfortunately, I got mine with a problem in the water reservoir tank
Cliente de Amazon –
Recibí el producto empacado en una vil bolsa de plástico. NO lo he probado pero la primera impresión de Philips así es pésima. Espero funcione el producto sin problema …Nunca más voy a comprar algún producto de PHILIPS …No duró ni un año ya que se descompuso a los 10 meses de uso. La peor ducha dental que jamás he comprado
Amazon Customer –
A los dos meses dejó de servir
Josh B. –
I am absolutely blown away by this power flosser. I’ve been on the fence about getting a water flosser for a while, but I decided to finally invest in my oral health, and I’m so glad I chose this one. My teeth and gums feel incredibly clean, like I’ve just left the dentist’s office!The Quad Stream tip is amazing; it provides a really thorough clean between teeth and along the gum line that you just can’t get with regular floss. And the “whisper quiet” design is no joke! I was expecting it to be loud, but it’s surprisingly discreet. The best feature is the Pulse Wave technology that guides you from tooth to tooth, so you know you’re getting a complete and proper clean every time.I love all the different modes and intensity settings, which let me customize it perfectly. It’s easy to use and the results are undeniable. My oral hygiene routine has been completely upgraded. This is a fantastic product and I can’t recommend it enough!