The Alen Air A350 is compatible with the following replacement filters. The A350 only requires one(1) of the following sets.

VirusHEPAPlus Replacement Filter

The VirusHEPAPlus replacement filter is an all-in-one filter that includes a washable pre-filter. The activated carbon provides a layer of gas and odor absorption. Up to 99% of dust, dust mites, pollen, pet dander, large particles, and molds are captured in the VirusHEPAPlus filtration and up to 98% of airborne bacteria and 50% of viruses that cause the flu. An advanced coating of silver fights against the bacteria and viruses and acts as a natural antibiotic.

The VirusHEPAPlus is an upgrade replacement from the HEPAPlus filter and should be replaced every 6 to 9 months. Only wash the pre-filter. Washing the main filter will damage the filtering fibers and reduce performance. If the fan motor becomes increasingly loud, replace the filters. Clogged filters tax the motor and can result in shorter fan life.

OdorHEPA Gas/Smoke/Odor Replacement Filter

The OdorHEPA Gas/Smoke/Odor Filter is perfect for absorption of cooking smells, body odors, paint, perfumes, and other potentially allergenic gases and odors. Even light smoke can be filtered out of your living space. The embedded 250 grams of Alen Air's patented Smoke & Odor Powder allow the OdorHEPA to filter the ultimate gas, smoke, and odor filter while still capturing 99% of dust, dust mites, pollen, pet dander, and molds.

The OdorHEPA Gas/Smoke/Odor is an upgrade replacement from the HEPAPlus filter and should be replaced every 6 to 9 months. Only wash the pre-filter. Washing the main filter will damage the filtering fibers and reduce performance. If the fan motor becomes increasingly loud, replace the filters. Clogged filters tax the motor and can result in shorter fan life.

Odor Tech Replacement Filter

The Odor Tech Replacement Filter is the top-of-the-line gas, odor, and smoke absorber that Alen Air offers. This filter offers an astounding 500 grams of Alen Air's patented MCP Smoke & Odor powder. Conquer bathroom odors, smoke, cleaning chemical scents, perfumes, and other potentially irritating gas, odors, and smoke polluting your home. The life of this filter is 1-2 years and does not include HEPA filtration. The MCP carbon pellets offer better performance than carbon sheets because of increased surface area.

Odor Tech Replacement Filter is an upgrade replacement filter from the HEPAPlus filter and should be replaced every 1-2 years.The pre-filter is washable, but the carbon filter is not. Washing the carbon filter may damage the filter and result in lower performance. If the unit begins to smell after months of use, the carbon pellets are saturated and the filter needs to be replaced.

HEPAPlus Replacement Filter

The HEPAPlus Replacement Filter is compatible with the Alen Air A350 and Alen Air A375YV. The carbon layer targets odors and gases to leave air smelling fresh and clean. The pre-filter is washable, making the A350 and A375UV extremely affordable air purifiers. Up to 99% of dust, dust mites, pollen, pet dander, molds, and other particles as small as 0.3 microns are trapped by the HEPAPlus filter. This filter is the standard filter included with the A350 and A375UV models.

Only the pre-filter is washable. Washing the main filter will damage the filtering fibers and reduce performance. If the fan motor becomes increasingly loud, replace the filters. Clogged filters tax the motor and can result in shorter fan life.