Water flosser comparison tool

Pick up to three water flossers and compare tank size, pressure range, modes, run time and the cost of the first year including replacement tips. The models come from our water flosser against floss guide, and every figure can be edited.

What matters: pressure, tank and tips

• Pressure. Listed in PSI. A wider range gives you more control. The Ordo Hydro Sonic runs from 80 to 160 PSI, and the Waterpik cordless models stop at 75 or 80.
• Tank. A bigger tank means longer between refills. The corded Waterpik Ultra Professional holds 650 ml. Cordless models hold about 180 to 260 ml where the size is stated, which gives well under two minutes per fill.
• Run time. How long one full tank lasts, as listed by the review site.
• Cord or cordless. Cordless units suit travel and small bathrooms. Corded units run for longer.
• Tips. Tips wear out. One reseller lists a single Waterpik Classic Jet Tip at £17.60 and says to replace it every six months, while three-packs of other brands can cost around £5. Tip prices vary a lot, so the tool lets you edit the tip price.

Braces, implants and sensitive gums

Water flossers are often used round braces and implants because a jet reaches where floss is awkward. The review site’s spec table does not cover orthodontic tips or implant settings, so we cannot rank models for these needs. Ask your orthodontist or dentist which tip and pressure setting they want you to use, and start on the lowest setting if your gums are tender.

Price over a year

The tool adds the unit price to the number of tips you expect to replace in a year. Where we did not find a tip price, the tool says so and shows the unit price alone. Prices and specifications come from Electric Teeth (8 April 2026) and UK retail listings, checked in October 2026.

If you are weighing up string floss and interdental brushes instead, the costs are in the guide. Our NHS access guide explains how to see a dentist if your gums keep bleeding.