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Effective and Moderately Priced Filter

The Honeywell HFD-120-Q is among the best air filters for its price range. It has a permanent filter that can be vacuum-cleaned and an ionizer for deodorizing. It has high CADR ratings for its price and true HEPA filter that will eliminate particles up to .3 microns. This is an oscillating purifier with an ionizer.

3 fan options, average noise level

The Honeywell HFD-120-Q includes three optional fan settings: low, medium, and high. This model produces a typical amount of white noise for its price range; it should not interfere with TV on the medium setting, and it is possible to sleep through if you are comfortable with the sound. Light sleepers will want to use the lower setting.


The Honeywell HFD-120-Q is an oscillating air purifier, providing more circulation for the air in your home. However, the oscillating feature does not have a dedicated on/off switch, so the purifier will oscillate for as long as it is on.

Built-In Ionizer

This model comes with a built-in ionizer, which releases negative ions into the room. The negative ions bind to oxygen molecules and create clumps of particulate matter which can then be filtered through the machine. One problem is that the ionizer cannot be turned on or off independently of the purifier, so people who are bothered by ionizers will not be able to use this product.


100+ CADR rating

The CADR, or Clean Air Delivery Rate, for this model has a high of 132 for pollen, which is higher than comparable units. It will be more effective in smaller rooms but can work effectively in medium sized rooms as well. It is also an effective purifier for getting rid of tobacco smell, with a CADR of 110. Your CADR should be about 2/3rd the square footage of the room you plane to use it in.

True HEPA Filter

The Honeywell HFD-120-Q has a true HEPA filter, meaning that it is regulated by the USDE and is guaranteed to remove particles as small as .3 microns. It has been tested and will remove 99.97 of the air’s particulate matter. HEPA filters are the most effective filtration devices and are used for both home and industrial environments.

Permanent filters

Non-replaceable filters mean that your initial investment is your last one; you will be able to keep the Honeywell HFD-120-Q running for its entire lifetime by manually cleaning the filters regularly. It is recommended that you clean the filters on a regular schedule, the more often the better, in order to extend their lifespan. Allowing dust and particulates to collect on the filters will significantly diminish the device’s effectiveness.



The Honeywell HFD-120-Q is about 28’’ high and 11’’ wide, making it one of the bulkier and hard-to-maneuver air purifiers.

Overall Review

The Honeywell HFD-120-Q is a moderately priced air purifier that delivers above-average results. While the inability to control the ionization and oscillation will frustrate some users, most will find that their needs are met by this model and that it effectively eradicated allergens within the home. It is worth repeating, however, that maintaining the cleanliness of the filters is paramount to this model’s lifespan and efficacy.