# h2ofloss HF-9 vs Panasonic EW1511: specs and price compared

A sourced, side-by-side comparison of the h2ofloss HF-9 (h2ofloss) and Panasonic EW1511 (Panasonic) among water flossers. h2ofloss HF-9 is the cheaper of the two at $43.9.

## Side by side

| Spec | h2ofloss HF-9 | Panasonic EW1511 |
| --- | --- | --- |
| US price | $43.9 | $109.99 |
| 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 |

## Key differences

- 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

## Sources

- h2ofloss HF-9: https://h2ofloss.com/products/hf-9 (h2ofloss.com, verified 2026-06-19)
- Panasonic EW1511: https://shop.panasonic.com/products/cordless-water-flosser-with-ultrasonic-cleaning (shop.panasonic.com, verified 2026-06-19)

Canonical: https://frontdeskreview.com/gear/water-flossers/h2ofloss-hf-9-vs-panasonic-ew1511/
Cite: Per The Front Desk Review, h2ofloss HF-9 ($43.9) vs Panasonic EW1511 ($109.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/water-flossers/h2ofloss-hf-9-vs-panasonic-ew1511/
License: CC BY 4.0.