HDC311 - AIRCARE Humidifier Filter
The HDC311 is a AIRCARE humidifier portable wicking filter that fits 2 models in our data.
Buy the filter for the HDC311
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Also known as / cross-references
The HDC311 replaces these part numbers: HDC311 Super Wick, AXPPF-HDC311.
Humidifiers that use the HDC311 (2)
Frequently asked
What is the HDC311?
The HDC311 is a AIRCARE humidifier portable wicking filter that fits 2 models in our data.
Is the HDC311 a wick or a furnace pad?
The HDC311 is a portable-humidifier wicking filter, not a furnace water panel.
How often should I replace the HDC311?
We don't have a manufacturer-listed replacement interval for this filter - a common default is once per humidifying season.
Is a cheaper compatible filter as good as the OEM one?
A compatible wick or pad that physically fits isn't automatically equivalent - check reviews for real-world fit and how well it wicks water, since humidifier filters aren't independently certified the way NSF-listed water filters are.