h2ofloss
h2ofloss HF-9
$43.9Cheaper
Best Water Flossers · head-to-head
h2ofloss HF-9 vs Panasonic EW1511
A sourced, side-by-side comparison. h2ofloss HF-9 is cheaper at $43.9. Every spec and price links to its source.
Panasonic
Panasonic EW1511
$109.99
Released 2019
Which is better: the h2ofloss HF-9 or Panasonic EW1511?
On the specs we track, they're closely matched. The h2ofloss HF-9 is the cheaper at $43.9.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | h2ofloss HF-9 | Panasonic EW1511 |
|---|---|---|
| US price | $43.9 | $109.99 Price from shop.panasonic.com |
| Brand | h2ofloss | Panasonic |
| Released | — | 2019 |
| Type | countertop | cordless |
| Tank capacity (ml) | 800 | 200 |
| Pressure settings | 5 | 5 |
| Max pressure (psi) | 110 | 94 |
| Tips included | 13 | 2 |
| Power | corded | rechargeable |
| Runtime min | — | 1 |
| Release | — | 2019 |
Sources — h2ofloss HF-9: h2ofloss.com (verified 2026-06-19). Panasonic EW1511: shop.panasonic.com (verified 2026-06-19).
What's the difference between the h2ofloss HF-9 and Panasonic EW1511?
Where the two actually differ on the specs we track (5 of 7). Matching specs are omitted.
- Type: h2ofloss HF-9 countertop vs Panasonic EW1511 cordless
- Tank capacity (ml): h2ofloss HF-9 800 vs Panasonic EW1511 200
- Max pressure (psi): h2ofloss HF-9 110 vs Panasonic EW1511 94
- Tips included: h2ofloss HF-9 13 vs Panasonic EW1511 2
- Power: h2ofloss HF-9 corded vs Panasonic EW1511 rechargeable