FitCheckr

Honeywell compatibility lookup

HCM350 Compatible Replacement Parts

Honeywell HCM350 Cool Moisture Humidifier

Confirmed fits

Honeywell HAC-504 Humidifier Replacement Filter A

Part number: HAC-504 / Filter A

Confidence: 92%

Honeywell HCM350 owners commonly need the HAC-504 / Filter A wicking filter. Replace sooner if the wick is stiff, discolored, or mineral-loaded.

Before choosing replacement filters
  • Match the device label to HCM350; series names alone can point to another part.
  • Compare the old part number against each confirmed fit before ordering.
  • Use the fit note when depth, cartridge stage, bag type, or kit contents are unclear.

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