---
title: "Online vs offline cleaning"
description: "Online cleaning happens during plant operation; offline cleaning requires shutdown. The choice between them is one of the central economic decisions in industrial maintenance because every offline cleaning campaign costs lost production."
canonical_url: "https://sylio.co/glossary/online-vs-offline-cleaning"
last_updated: "2026-06-28T02:29:24.203Z"
---

**Online cleaning** happens during plant operation; **offline cleaning** requires shutdown. The choice between them is one of the central economic decisions in industrial maintenance because every offline cleaning campaign costs lost production.

## Online cleaning toolkit

- [Sonic horns](/glossary/sonic-horn)
- [Steam sootblowers](/glossary/steam-sootblower) (all types)
- [Water cannons](/glossary/water-cannon)
- [Detonation cleaning](/glossary/detonation-cleaning) (limited)
- [Shock-pulse generator](/glossary/shock-pulse-generator) (recovery-boiler)

## Offline cleaning toolkit

- [Hydroblasting](/glossary/hydroblasting-offline)
- [Dry-ice blasting](/glossary/dry-ice-blasting)
- [Manual lancing](/glossary/manual-lancing)
- [Water wash](/glossary/water-wash-recovery-boiler)
- [Explosive deslagging](/glossary/explosive-deslagging)
- Chemical cleaning (water-side)

## The economic logic

Online cleaning is always cheaper per cleaning event than offline cleaning, because no production is lost. The strategic role of [sonic horns](/glossary/sonic-horn), steam sootblowers and water cannons is therefore to defer offline cleaning campaigns as long as possible — typically aiming for one offline campaign per planned outage cycle, with online cleaning carrying the load between.

## Related terms

- [Sonic horn](/glossary/sonic-horn)
- [Steam sootblower](/glossary/steam-sootblower)
- [Water wash (recovery boiler)](/glossary/water-wash-recovery-boiler)
- [Dry-ice blasting](/glossary/dry-ice-blasting)
- [Hydroblasting (offline)](/glossary/hydroblasting-offline)