---
title: "Acoustic cleaning vs ultrasonic cleaning"
description: "Acoustic cleaning and ultrasonic cleaning are routinely confused because both use sound to remove unwanted material. In every practical respect — frequency, medium, scale, target, mechanism — they are different technologies for different jobs."
canonical_url: "https://sylio.co/glossary/acoustic-cleaning-vs-ultrasonic-cleaning"
last_updated: "2026-06-28T02:29:29.449Z"
---

**Acoustic cleaning** and **ultrasonic cleaning** are routinely confused because both use sound to remove unwanted material. In every practical respect — frequency, medium, scale, target, mechanism — they are different technologies for different jobs.

## Side-by-side comparison

<table>
<thead>
  <tr>
    <th>
      Attribute
    </th>
    
    <th>
      Acoustic cleaning
    </th>
    
    <th>
      Ultrasonic cleaning
    </th>
  </tr>
</thead>

<tbody>
  <tr>
    <td>
      Frequency band
    </td>
    
    <td>
      12–450 Hz (audible / infrasonic)
    </td>
    
    <td>
      20 kHz–400 kHz (ultrasonic)
    </td>
  </tr>
  
  <tr>
    <td>
      Transmission medium
    </td>
    
    <td>
      Air or flue gas
    </td>
    
    <td>
      Liquid bath (water + detergent or solvent)
    </td>
  </tr>
  
  <tr>
    <td>
      Cleaning mechanism
    </td>
    
    <td>
      Acoustic vibration dislodges loose particulate
    </td>
    
    <td>
      Cavitation — imploding microbubbles scrub surfaces
    </td>
  </tr>
  
  <tr>
    <td>
      Mode
    </td>
    
    <td>
      In situ, online, continuous
    </td>
    
    <td>
      Off-line, immersion of removed part
    </td>
  </tr>
  
  <tr>
    <td>
      Scale of target
    </td>
    
    <td>
      Industrial vessels: boilers, ESPs, baghouses, silos
    </td>
    
    <td>
      Small parts: jewellery, surgical instruments, electronics, machined components
    </td>
  </tr>
  
  <tr>
    <td>
      Typical equipment
    </td>
    
    <td>
      <a href="/glossary/sonic-horn">
        Sonic horn
      </a>
      
      , <a href="/glossary/infrasonic-cleaner">
        infrasonic cleaner
      </a>
      
      , <a href="/glossary/acoustic-cleaning-system">
        acoustic cleaning system
      </a>
    </td>
    
    <td>
      Ultrasonic tank, transducer plate, generator
    </td>
  </tr>
  
  <tr>
    <td>
      Power level
    </td>
    
    <td>
      140–180 dB acoustic SPL
    </td>
    
    <td>
      25–500 W per litre of bath
    </td>
  </tr>
  
  <tr>
    <td>
      Sector
    </td>
    
    <td>
      Power, cement, pulp & paper, WtE, refining, mining
    </td>
    
    <td>
      Medical, dental, jewellery, optics, electronics manufacturing
    </td>
  </tr>
</tbody>
</table>

## What they share

Only the broad principle that mechanical vibration can dislodge bonded matter without abrasive contact. The wavelengths, equipment, target sizes and economics overlap nowhere.

## Why the confusion exists

Both technologies are sometimes labelled "sonic cleaning" in informal usage, and both rely on the language of acoustics. Search-engine results for `sonic cleaning` mix the two indiscriminately. A specifier looking to clean a hopper, a baghouse or a boiler should follow the [acoustic cleaning](/glossary/acoustic-cleaner) family of terms; a specifier looking to clean a printed circuit board, a watch movement or a surgical instrument should follow ultrasonic cleaning.

## Related terms

- [Acoustic cleaner](/glossary/acoustic-cleaner)
- [Sonic horn](/glossary/sonic-horn)
- [Infrasonic cleaner](/glossary/infrasonic-cleaner)