Which wet dry floor cleaner is the quietest?
No wet dry floor cleaner can be named quietest across brands, since none of the four makers gives a measuring distance or test. The lowest printed cleaning figure is Karcher's 59 dB(A) for the FC 7 Cordless.
These are the four cleaning figures we found on current US models:
- Karcher FC 7 Cordless: 59 dB(A), sound pressure
- Roborock F25 GT Gen 2: 70 dB in ECO, 74 dB in MAX
- Tineco FLOOR ONE S5: 78dB(A)
- Eureka NEW400: 80dB
A 21 point spread looks decisive, yet the four figures could have been taken at different distances, modes and weightings. A meter held one meter away reads lower than one at the operator's ear, and nothing on these pages says which was used.
What the list does show is how much each maker tells you. Karcher names the quantity, Roborock splits its figure by mode, and Tineco and Eureka print a single bare number.
How do floor washer makers rate noise?
Floor washer makers rate noise in three ways: a bare decibel number in a spec table, a figure for each mode in an FAQ, or an upper limit in a product Q&A. A fourth group prints only drying cycle figures.
A named quantity from Karcher
Karcher's US spec table and product information sheet for the FC 7 Cordless both list "Sound pressure level" at 59 dB(A). That tells you it is a level at a listening spot, not the machine's total sound power, though the spot itself goes unstated. A sound power figure would describe the whole machine instead, and this explainer shows why the two are never ranked together.
Roborock's FAQ for the F25 GT Gen 2 gives ECO, MAX and self-cleaning separately, with no weighting. Tineco's S5 spec table reads "Noise 78dB(A)", and Eureka's NEW400 table reads "Noise Level 80dB". Each is ranked only against figures from the same maker.
Upper limits and ranges
Tineco's store Q&As for the S7 and S9 models say the machine "produces up to 78dBA of sound", and Roborock's F25 Combo page says "≤73dB(A) Under Eco Mode". Both are ceilings. Roborock's F25 ACE Pro gives a range, 74 to 75 dB across cleaning, self-cleaning and fast drying, which is not one cleaning value either.
How loud is a wet dry floor cleaner in ECO mode?
Roborock is the only maker here that prints an ECO figure: 70 dB for the F25 GT Gen 2, against 74 dB in MAX and 74 during self-cleaning, all from the same FAQ.
Four decibels separate ECO from MAX on that page. Because both numbers come from one maker, for one machine, that gap is the most useful comparison in this guide. ECO also runs longer, up to 38 minutes against 22 in MAX.
Karcher's FC 7 Cordless has three modes including boost, and its single 59 dB(A) does not say which. Tineco and Eureka do not tie their figures to a mode either. Our guide to quiet and sleep modes explains why a low setting changes so much on any motor driven machine.
Are self-drying cycles quieter than cleaning?
Mostly, yes: printed drying figures run from Narwal's 45dB(A) to Dreame's 63dBA, below most of the 59 to 80 given for cleaning, but drying and cleaning are different jobs and never share a ranking.
After a clean, most floor washers dock and blow warm air over the wet roller. That can run for half an hour or more, often after you have left the room, so a low number matters for late cleaning. These are the drying figures the makers print:
- Narwal S30: 45dB(A), "under quiet drying mode"
- Roborock F25 GT Gen 2 and F25 ACE Pro: 48 dB in quiet drying
- Dreame H14 Pro: 50.6dBA in its Quiet drying mode
- Tineco FLOOR ONE S7 Master: "≤52 dB(A)" in SilentDry, a ceiling
- Dreame H15 Pro: 63dBA, credited to an outside lab report
Dreame, Narwal and the S7 Master give no cleaning figure at all, which is why they sit in the also considered list.
Why does Narwal's S20 Pro show 43 dB?
Narwal's S20 Pro page shows a "43 dB" badge over a photo of the machine cleaning, with no mode or footnote, while its spec table lists "Drying Noise 45dB(A)".
A cleaning figure lower than the drying figure would be unusual, and the page does not explain it. Narwal's newer S30 page footnotes its own 45dB(A) as a quiet drying figure. Without a mode we could pin down, the 43 stays unranked.
Is a floor washer quieter than a shop vac?
Within Karcher, yes: the FC 7 Cordless lists 59 dB(A) and the WD 4 wet and dry shop vacuum lists 74 dB(A), both as sound pressure on the same US page template.
That 15 decibel gap compares like with like, one maker's tables for two machines. A shop vac is still the wrong tool for daily mopping, and our shop vac guide covers the machines built for garage and workshop messes.
No other brand here makes both, so no cross-brand version of the comparison exists.
Has Karcher made quieter FC models before?
No, Karcher's older US hard floor cleaners print the same 59 dB(A) or more. Its site files all of them under discontinued machines, and the FC 7 Cordless was the only current FC model we found.
These are the older figures from Karcher's US pages, read on November 4, 2026:
- FC 7 (1.055-733.0) and FC 7 Cordless Premium (1.055-764.0): 59 dB(A)
- FC 5 (1.055-407.0) and FC 5 Premium (1.055-463.0): 67 dB(A)
- FC 5 Cordless (1.055-606.0): 69 dB(A)
- FC 3 Cordless (1.055-305.0): 71 dB(A)
Because these share a maker and a page template, they rank against each other. The current machine ties the best of them, and Karcher's footnote compares it with its FCV 3 and FCV 4 at 65 dB(A), two models its US site does not sell.
Dreame, Narwal, Hoover and Eureka's RapidWash 630 print no cleaning noise number on any US page we opened, and Bissell, Shark and Dyson blocked our requests.
Dreame's pages for the H12 Pro, H14, H14 Pro, H15 Pro and Aero models give drying figures or none. Narwal prints drying figures for the S20 Pro and S30. Hoover's FloorMate hard floor cleaner page has no noise row.
Eureka says the RapidWash 630 cuts "the maximum noise level by 7.5%" against the previous generation without saying what either level is. A percentage of an unknown figure cannot be ranked, so it is quoted here only.
