Case Study: DriSteem Humidifier Descaling

Service: Humidifier Descaling & Water Treatment
Industry: Commercial / Institutional Facility
Location: Ontario

Project Overview

A client operating a DriSteem humidifier system noticed declining performance and rising energy costs. Upon inspection, the cause was clear: heavy scale buildup inside the humidifier tubes.

The deposits had built up to more than ¼ inch thick, significantly limiting heat transfer and forcing the system to work harder than it should.

The Challenge

The level of scale inside the humidifier wasn’t minor, it was severe. At that thickness, the system was no longer operating efficiently, and energy use had climbed accordingly.

It’s estimated that this kind of buildup can increase energy demand by as much as 40%.

The client needed a way to:

• Remove the scale effectively
• Restore performance
• Avoid a lengthy shutdown or complex teardown

The Game Plan

Step 1: Match the solution to the severity

Given how heavy the deposits were, a light cleaning approach wouldn’t have delivered results. The situation called for a product capable of breaking down thick, stubborn scale without damaging the system.

Step 2: Use a product designed for this exact issue

WMC Water recommended a proprietary scale remover, which is formulated to handle aggressive scale removal while remaining safe for stainless steel components like those in the humidifier.

Step 3: Keep the process straightforward and efficient

Rather than overcomplicating the job, the solution was provided to the contractor with clear instructions on how to apply it: covering circulation, contact time, and best practices.

This allowed the cleaning to be completed effectively without unnecessary labour or disruption.

The Outcome

The difference after cleaning was immediate.

The system saw:

• Near-complete removal of scale from the tubes
• Restored heat transfer performance
• Estimated energy savings of up to 40%
• Improved overall system efficiency

Post-cleaning, only minimal residue remained, confirming the treatment worked as intended.

Why It Matters

Scale buildup doesn’t just affect performance, it drives up energy costs and puts added strain on equipment.

In systems like humidifiers, where efficiency depends heavily on clean heat transfer surfaces, even moderate buildup can have an impact. At this level, the cost implications are hard to ignore.

This project shows that with the right approach, even heavily scaled systems can be brought back to proper working condition without unnecessary downtime or complexity.