One Tank Clean product guide
Philips Sonicare Cordless Power Flosser 3000, HX3827/21 (White, 4 Nozzles)
People who want a cordless flosser and spare Quad Stream nozzles in one box
A cordless rechargeable flosser with a 250 ml tank, two modes, three intensities and four nozzles in the box. Battery life is stated three different ways across the listing, the Philips page and the manual, and none of the three sources reconciles the others.
Listing checked . Confirm the model, included parts and availability before ordering.
Published specifications
- Listing: model HX3827/21; 4 nozzles, 3 Quad Stream and 1 Standard
- Maker page: removable 250 ml tank; 60-second session, 90 in Deep Clean
- Manual: two modes, Clean with pacer and Deep clean with Pulse Wave
- Manual: three intensity settings; auto shut-off after two minutes
- Manual: at least 25 one-minute sessions; up to 8 hours to charge
- Manual: replace nozzles every 6 months; two-year warranty
Fit and limits
Strengths
- Four nozzles in the box, so spares are already included
- Two fill routes plus in-reservoir storage for one nozzle
- Manual names HX3827 directly in its 3000 Series model list
Caveats
- Battery life stated as 14 days, 40 days and 25 sessions across sources
- Manual forbids dishwashing in one place and allows it in another
- Wall adapter is not included with every model, per the manual
The four-nozzle version of the cordless 3000
This listing is model HX3827/21 in white, and the bullets describe four nozzles in the box: three Quad Stream and one Standard. Philips sells the Cordless Power Flosser 3000 under several close model numbers, so check the code on the box rather than the series name alone if you are matching a previous purchase.
The manual covers the 3000 and 2000 Series together and names HX3827 in its 3000 Series model list, so this exact model is documented by Philips. Its parts diagram shows a nozzle and nozzle rotator, release button, on/off button, intensity indicator and button, a mode indicator and button on specific models, a battery indicator, a covered charging port, in-reservoir nozzle storage, the reservoir and its fill door, a nozzle case and travel pouch on specific models, a USB-A cable and, on some models, a USB-A adapter.
The manual repeats twice that box contents vary by configuration, so the nozzle case, travel pouch and wall adapter are not guaranteed by the manual. The listing gives package dimensions of 9.96 by 5.35 by 3.7 inches and a weight of 1.34 pounds.
Three different battery figures, and none of them match
This is the thing to know before buying. The Amazon listing bullet claims a 14-day battery life. Philips' own product page for the same model number claims a 40-day battery life. The manual says the Cordless Power Flosser is designed to provide at least 25 flossing sessions, each lasting one minute.
None of the three documents explains how the others were measured, and no daily-use assumption is printed beside either day figure. Only the manual's figure is tied to a stated session length, but neither Philips page reconciles it with the 40-day claim, so ask Philips which applies.
The manual adds that when the low battery indicator appears the flosser is designed for at least three more one-minute sessions, and that the device shuts off automatically after two minutes of use. Ask Philips if the day figures matter to you rather than assuming either is right.
A 250 ml tank with two ways to fill it
Philips' product page gives the removable tank as 250 ml and says it holds enough water for a full 60-second session, or up to 90 seconds in Deep Clean mode. The listing describes the reservoir only as large and does not print a capacity, so the 250 ml figure comes from the maker page.
The manual describes two filling routes: lift the flip top at the side and fill through the quick side fill port, or twist the reservoir off and fill through the wide mouth opening before twisting it back on. It asks you to use lukewarm water, stay below the max fill line, and unplug the charger before filling.
The reservoir also carries storage for one nozzle inside it. The manual warns not to place anything else in the reservoir, and specifically not the charging cord or the wall adapter.
Two modes, three intensities, and a fifteen-second pacer
The manual says 3000 Series models have two modes. Clean is described as constant water pressure with a pacer, and Deep clean uses what Philips calls Pulse Wave technology. The listing and the maker page both give the same count of two modes.
There are three intensity settings, changed by pressing the intensity button, and the manual recommends starting on the lowest and increasing over the course of a few weeks. The intensity level is shown by an indicator on the handle rather than a dial.
The pacer pauses the water flow every fifteen seconds and arrives switched on. You turn it off or on by holding the intensity selection button for three seconds while the flosser is off, and the battery light flashes amber once or green twice to confirm.
Charging, the adapter you may have to supply, and a dishwasher contradiction
Charging is through a USB-A cable into a covered port on the back of the handle. The manual says the wall adapter is not included in all models, that only a 5V IPX4 adapter should be used, and that a full charge can take up to eight hours, though the flosser can be used before it is full.
The manual contradicts itself on dishwashing. Its safety instructions say not to clean any part of the product in the dishwasher, while its cleaning section says the reservoir and the nozzle storage case can be cleaned in the top rack. Neither passage acknowledges the other, so the cautious reading is to hand wash and ask Philips.
Weekly cleaning is specified, with a vinegar soak for clogged nozzles and a vinegar flush for the internal parts; the ratios and soak times are in the manual and are not repeated here. Nozzles are to be replaced every six months, and leaving the side fill door open helps the tank dry.
Two-year warranty, and what the documents leave open
The manual gives a two-year warranty from the date of purchase against faulty materials and workmanship, on convincing proof of purchase. Philips' product and support pages both show a matching two year warranty badge.
The exclusions listed are the nozzles, damage from unauthorised replacement parts or nozzles, damage from misuse, abuse, neglect, alterations or unauthorised repair, and normal wear such as chips, scratches, abrasions, discoloration and fading. Philips also warns that other nozzles may limit warranty protection.
The listing title claims an IPX7 waterproof rating, but no IP rating for the flosser itself appears in the English manual pages that were read or in the Philips page text. The manual does state that the battery is not user-replaceable and must be removed by a qualified professional at disposal.
Check the current listing
Confirm the model, included parts and availability before ordering.
Primary sources
- Philips product page for the Sonicare Cordless Power Flosser 3000 HX3827/21
- Philips support page for HX3827/21, listing the English User Manual
- Philips Sonicare Cordless Power Flosser 3000 and 2000 Series User Manual (PDF)
Primary sources checked .
Compare with
- Waterpik Aquarius Countertop Water Flosser WP-660 (White)
A bathroom counter near a North American outlet, shared by several people
- Waterpik Cordless Advanced Water Flosser WP-580 (White)
Travel, small bathrooms or flossing in the shower
- COSLUS C20 Cordless Water Flosser, F5020E (Black, Professional Set)
People who want a cordless flosser with a 300 ml tank and a published PSI range
- Philips Sonicare Cordless Power Flosser 3000, HX3826/21 (White, 2 Nozzles)
People who want a cordless flosser for one short session a day
- Waterpik Cordless Pulse 3100 Water Flosser, WF-20CD010 (White)
Light daily use and travel where a small tank is acceptable
- Waterpik Aquarius Countertop Water Flosser WP-667 (Modern Gray)
A shared bathroom where several people want their own tip and pressure setting
Side-by-side pages, this model next to: Philips Sonicare Power Flosser & Toothbrush System 7000, HX3921/40 (White).