Philips Sonicare Cordless Power Flosser 3000, HX3827/21 (White, 4 Nozzles) vs Philips Sonicare Power Flosser & Toothbrush System 7000, HX3921/40 (White)
These are side-by-side facts taken from each product guide: published specifications, strengths and caveats as their sources state them. This page is not a test, a ranking or a verdict about which model is better.
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.
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
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
Read the full Philips Sonicare Cordless Power Flosser 3000, HX3827/21 (White, 4 Nozzles) guide
Philips Sonicare Power Flosser & Toothbrush System 7000, HX3921/40 (White)
People who want the flosser and an electric toothbrush sharing one base
A countertop Power Flosser with four modes, ten intensity settings and a magnetic handle dock, combined with a Sonicare ExpertClean 7300 toothbrush that charges on the same base. Neither the listing nor the maker page states a tank size, and the brush has a separate manual.
Published specifications
- Listing: model HX3921/40; 8.62 x 7.48 x 10.43 in; 3.27 lb
- Manual: four modes, Clean, Deep clean, Sensitive and Massage
- Manual: ten intensity settings on a base dial; start at lowest
- Manual: F1, F2 and F3 nozzles; only Philips flosser nozzles fit
- Manual: integrated Sonicare toothbrush charger on the same base
- Manual: two-year warranty; reservoir and nozzles excluded
Strengths
- Flosser and toothbrush charge and live on one countertop base
- Four modes plus a ten-step dial, with a pacer you can switch off
- Nozzle storage case included in the manual's parts and cleaning lists
Caveats
- No reservoir capacity stated on the listing, maker page or manual
- Listing's detail table says a 9V battery is required; manual does not
- Warranty excludes the reservoir and nozzles, the parts that wear
Read the full Philips Sonicare Power Flosser & Toothbrush System 7000, HX3921/40 (White) guide
How to choose between them
Choose the Philips Sonicare Cordless Power Flosser 3000, HX3827/21 (White, 4 Nozzles) if your situation matches: People who want a cordless flosser and spare Quad Stream nozzles in one box. Its main caveat: Battery life stated as 14 days, 40 days and 25 sessions across sources.
Choose the Philips Sonicare Power Flosser & Toothbrush System 7000, HX3921/40 (White) if your situation matches: People who want the flosser and an electric toothbrush sharing one base. Its main caveat: No reservoir capacity stated on the listing, maker page or manual.
Both entries repeat what each guide records. Confirm the model, included parts and availability on the current listing before ordering.
Primary sources
- Philips product page for the Sonicare Cordless Power Flosser 3000 HX3827/21 Source for Philips Sonicare Cordless Power Flosser 3000, HX3827/21 (White, 4 Nozzles)
- Philips support page for HX3827/21, listing the English User Manual Source for Philips Sonicare Cordless Power Flosser 3000, HX3827/21 (White, 4 Nozzles)
- Philips Sonicare Cordless Power Flosser 3000 and 2000 Series User Manual (PDF) Source for Philips Sonicare Cordless Power Flosser 3000, HX3827/21 (White, 4 Nozzles)
- Philips product page for the Sonicare Power Flosser 7000 System HX3921/40 Source for Philips Sonicare Power Flosser & Toothbrush System 7000, HX3921/40 (White)
- Philips support page for HX3921/40, listing the User Manual Source for Philips Sonicare Power Flosser & Toothbrush System 7000, HX3921/40 (White)
- Philips Sonicare Power Flosser 7000 User Manual (PDF) Source for Philips Sonicare Power Flosser & Toothbrush System 7000, HX3921/40 (White)
Primary sources checked .