Dust, pollen, smoke removal is how well a model cleared air ... the Honeywell HPA300 is mainly how well the model removed dust and smoke from a test chamber, plus quietness for room purifiers.

AIR PURIFIER FILTER REPLACEMENT KIT – This value combo pack of air purifier filters is a one-year supply for the HPA200 and HPA5100 series and includes 4 A Pre-Cut Carbon Pre-Filters ...