Building Services & Commissioning Specialists

Humidifier Sump Replacement

Data centre cooling

12 October 2026

Replacing a leaking humidifier sump to address water loss and support reliable humidity control.

Client

Classified

Location

Gavle, Sweden

Sector

Data centre cooling

The brief

Chillax Engineering was called to replace a leaking humidifier sump at a data centre in Sweden.

The sump forms part of the humidifier’s water collection and containment arrangement. A leak can lead to water loss and affect the equipment’s ability to operate as intended, making it important to address the defective component.

Humidity control is one part of managing the indoor environment in a data centre. Alongside temperature control and ventilation, it helps maintain suitable conditions for sensitive equipment. Excessively dry conditions can increase the risk of electrostatic discharge, while excessive moisture can create other problems, including condensation under certain conditions.

The client needed the leaking sump replaced to resolve the water loss and support the humidifier’s continued operation within the wider HVAC system.

What we did

Our engineers replaced the defective humidifier sump, addressing the component identified as the source of the leak.

Restoring water containment
The repair focused on restoring the sump’s ability to contain water as intended. Effective water containment is important both for humidifier operation and for avoiding unwanted water release around the equipment.

Supporting the existing humidification system
By replacing the faulty component, the team supported the continued use of the existing humidifier. This targeted repair addressed a specific maintenance issue within the wider system responsible for managing the data centre’s indoor conditions.

The outcome

The leaking sump was replaced, addressing water loss and supporting reliable humidifier operation.

The work highlights the importance of maintaining individual components within data centre HVAC systems. A relatively small defect can affect the equipment it serves, so timely repairs help prevent an identified issue from continuing to undermine system performance.

Reliable humidification depends on more than the humidifier alone: water supply, controls, sensors and ongoing maintenance all contribute. This repair addressed one important part of that arrangement, helping the wider system perform as intended.

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