“"S" filter required for "oder control, but unit, OTB, removes VOCs? Doesn't "compute." Does S filter alter cu-ft/min &/or dB levels in actual use? What is current MSR price for S filter a/o Mar 2021?”
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What I've learned... VOC absorbtion is accomplished by activated charcoal filters placed ahead of final HEPA filtration. Increasing total thickness of carbon ahead of HEPA increases VOC absorbtion. AP1, APP1 (pre-filter) & SP1 (pet) are all made from activated charcoal, treated w/ anti-microbial, hypoallergenic zeolite (mineral salt). SK1 (kitchen) is activated charcoal treated w/ potassium permanganate (KMnO4) to improve absorbtion of common kitchen solvents, but not cooking oil vapor. SC1 (remodeling/rennivation) is activated charcoal, with pelletized activated charcoal, to maximize the carbon surface area available to absorb construction solvent VOC-s, like benzene & formaldehyde. SS1 (smoke) is activated charcoal, with an as yet undisclosed smoke absorbtion enhancement. Placing 1 S filter directly on top of an already installed R/HEPA filter guarantees that every sq inch of each S filter is filtering VOCs/odors prior to final R/HEPA filtration. In contrast, the entire surface area of the larger, one piece, AP1/APP1 pre-filter is not equally engaged in VOC absorbtion. The sections of A/pre-filter directly in front of R/HEPA filter openings will become VOC saturated long before the outer edges of the A/pre-filter, because of direct vs tangential airflows. The system mostly makes sense, but Honeywell could explain it much better than what they default to.
Sorry, there was a problem. Please try again later.Thank you for your inquiry. While the Activated Carbon of the pre-filter will remove some odors and VOCs from the air, its main duty is to capture the larger particles in the air. The Optional Odor and VOC reducing S filters are made specifically to remove odors and VOCs from the air and will do so at a much higher percentage than just the Carbon pre-filter could. Using the optional S filter will not have an effect on the unit's CADR nor the noise level of the unit. As of March 2021, the MSRP is $24.99. If you have any other questions please do not hesitate to contact our consumer relations team by emailing us at [email protected]. Thank you.
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