Honeywell Air Purifier Filters - General FAQs

  • Question: Which Filter Fits My Unit?


    To identify the correct replacement filters for your air purifier, please refer to any of the following:

    1. On your air purifier: remove the grille of the air purifier to find the stickers indicating the replacement filters needed.

    2. On our website: Find the product page for your model on our website . Filter compatibility will appear under “View All Specifications” section on the bottom of the product page. You can also find filter compatibility and installation instructions in the owner’s manual. 

  • Question: How Do I Know When to Change the Filter?


    Most Honeywell Air Purifiers have a “Filter Check/Reset” indicator that alerts you when it is time to change the filter. As a general rule:

    Pre-filters should be replaced every 3 months.

    HEPA filters should be changed every 12 months.

    HEPA Clean filters (depending on the model) should be replaced either every 4 to 6 months. Please refer to the product owner’s manual for recommended replacement time frames.

    Note: These replacement intervals are intended as guidelines only. Performance of any filter media is dependent upon the concentration of contaminants going through the system. High concentrations of contaminants such as dust, pet dander, and smoke will reduce the useful performance of the filters.

    Note: the main filters on Air Genius or Quiet Clean Air Purifiers are permanent and do not need to be replaced but should be washed every 3 months according to the instructions in the owner’s manual.

  • Question: How Do I Change My Air Filter?


    Changing the filter on your air purifier is easy but may vary depending upon the model you own.

    Refer to your owner’s manual for detailed instructions on changing the air filter for your specific model.

  • Question: What's the Difference Between a HEPA or an iFD Filter?


    HEPA and ifD filters use different mechanisms to filter out microscopic airborne particles.

    HEPA: Uses mechanical filtration in which particles are pulled through and trapped in a HEPA filter that is certified to capture up to 99.97% of the following microscopic airborne allergens and particles: dust, pollen, pet dander, dust mite debris and smoke¹ . The pre-filters and HEPA filters are replaceable.

    ifD: Uses electronic filtration in which particles are attracted to and captured by the permanent ifD filters. ifD units can capture up to 99.9% of the following microscopic airborne particles: dust, pollen, pet dander, dust mite debris and smoke. The main filter is permanent and washable, but some units also work with a pre-filter to capture larger airborne particles and reduce VOC and odors.

  • Question: How Do I Reset the Filter Light?

    Answer: After you change your filter, the “Check Filter or “Check Pre-Filter” light will remain on until it is reset.  With the unit powered on, press the lighted button, and hold for approximately 2 seconds until the light turns off.  The electronic filter check is now reset. 

  • Question: Does My Air Purifier Come With a Filter?

    Answer: Yes, all of our air purifiers come with initial filter(s) already in the unit.

  • Question: Why Are There 2 Filters in My Air Purifier? What Are The Differences?


    Most Honeywell Air Purifiers come with both a pre-filter and a primary filter.
    The pre-filter helps capture larger airborne particles like pet hair and dust and reduce odors and VOC’s
    The primary filter in your unit will typically be a HEPA, HEPA-type or ifD® filter that helps capture the smaller microscopic airborne particles.

  • Question: Can I Use Any Replacement Filter For My Air Purifier?


    Honeywell takes pride in ensuring effective air cleaning performance. To help ensure stated product performance and effectiveness, use only Genuine and Certified Honeywell replacement filters. Each air purifier is designed to work with the specified filters. Unit performance is tested as a system with Honeywell filters for best efficiency. We cannot promise the stated performance of your air purifier if non-Honeywell filters are used.
    You can find certified Honeywell Filters here.

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