How Loud Is a Washing Machine? Only the Spin Is Declared

This is the single most useful thing to know about washing machine noise figures, and it is almost never stated on retail listings: the classed and labelled value applies to the spinning phase.

That choice makes sense from the regulator's side. Spin is the loudest and most repeatable phase, dominated by drum speed and balance rather than by load composition, so it is the phase a laboratory can measure consistently. But it means the label is silent about the wash phase, about pumping and drainage, and about the intermittent thumps of an unbalanced load — which are the sounds people actually complain about.

Peer-reviewed work on washing machine acoustics reflects this: studies exist on noise paths in horizontal-axis machines and on the acoustics of the drainage cycle specifically, which is itself evidence that the phases differ enough to be studied separately.

The bands sit far higher than the dishwasher scale, because they describe a drum turning at over a thousand revolutions per minute rather than a pump circulating water.

A higher rated spin speed extracts more water and shortens drying time, and it also raises the aerodynamic and mechanical noise the drum produces. So the spin figure and the spin speed have to be read together: 66 dB(A) re 1 pW at 1393 rpm is a different achievement from the same figure at 1000 rpm.

Load balance is the other variable, and it is the one no laboratory declaration can capture. An unbalanced load produces a rhythmic structure-borne thump that travels through the floor rather than the air, which is why a machine can be quiet by declaration and still be the loudest thing in a flat.

Structure-borne transmission is genuinely outside what any airborne declaration describes. We found no published source that quantifies it for domestic machines.

Three specific gaps are worth naming. There is no declared wash-phase sound power on the EU label. There is no published sound pressure level for a washing machine at a stated distance with stated room conditions from an agency or peer-reviewed source. And there is no published method for converting a declared sound power figure into an expected level in a utility room.

The last one matters most, because it is the conversion retail copy performs constantly and silently. For outdoor air-conditioning units an industry standard does publish an estimation procedure; for washing machines, nothing equivalent exists in the sources we reviewed.

The comparison that works is phase against phase. Run a cycle and watch how the reading moves between wash, drain and spin, and you will see the spin dominate — which is the same conclusion the regulation reached, arrived at in your own room.

Uncalibrated our meter reports A-weighted digital signal level in dBFS, which is relative rather than sound pressure; after a one-time local calibration it reports an estimated dBA figure. Neither can be compared with the label, because the label is a sound power declaration from a laboratory.