Hamilton Medical recalls H900 humidifiers (models 950001, 950004) with software 1.10c due to delayed low water alarm when chamber is empty, risking undetected water absence during medical ventilation.
When starting a humidifier, intended for respiratory gas conditioning during invasive and noninvasive mechanical ventilation, with an empty chamber, and water is not filled into the chamber, the low water level alarm will be delayed and medical staff are unaware that there is no water in the chamber.
Hamilton Medical is recalling H900 humidifiers with specific model numbers and software version 1.10c. The recall is because these devices may delay the low water alarm when the chamber is empty, which could lead to medical staff not realizing there's no water during critical ventilation procedures.
If the humidifier chamber is empty and water isn't added, the low water level alarm delays, causing medical staff to unknowingly have no water in the chamber. This could lead to improper ventilation if the device is used without water.
Medical staff using the H900 humidifier for respiratory gas conditioning during mechanical ventilation are most at risk. Patients on invasive or noninvasive ventilation with this device could be affected.
Check for model numbers 950001 or 950004 on the device. Devices with software version 1.10c are affected. The recall applies to all units sold with these specifications.
Verify the software version on your humidifier; affected units have version 1.10c.
Always fill the chamber with water before starting the humidifier to prevent delayed alarms.
The recall occurs because the humidifier may delay the low water level alarm when the chamber is empty, risking undetected water absence during critical ventilation procedures.
Models 950001 and 950004 with software version 1.10c are affected.
Check for model numbers 950001 or 950004 and software version 1.10c on the device.
We’ve drafted a message you can send Hamilton Medical to request your refund or repair — edit it as you like.
Subject: Recall Z-1385-2022 — Hamilton Medical Hamilton Medical Hello, I own a Hamilton Medical that is covered by recall Z-1385-2022 from Hamilton Medical. I’m writing to arrange the remedy described in the recall (a refund, repair, or replacement as applicable). Could you please tell me the next steps to resolve this? Thank you.
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The facts (hazard, remedy, dates, manufacturer) are pulled from the official FDA recall record. The plain-language summary and step-by-step checklist are written by GovInfoNow to make the official notice easier to act on — they don’t replace it.
