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Alen A375 Ultra HEPA Air Purifier

Alen A375UV Air Purifier

Model: A375UV | SKU: al1036
  • Discontinued - This item is not currently available to order.

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  • Product Overview

    Craft a healthier indoor environment with the Alen A375UV Ultra HEPA Air Purifier. This ultraviolet HEPA air cleaner works hard to eliminate debilitating airborne allergens, irritating odors, toxic airborne gases, and immunity-compromising germs in areas measuring up to 650 square feet. The Alen A375UV Air Purifier uses multi-stage HEPA and carbon filtration combined with the power of ultraviolet (UV) germicidal light to stop a variety of airborne impurities in their tracks. Moreover, with upgraded digital controls, hassle-free maintenance, and an energy- and cost-saving design, this popular all-purpose air purifier is one of the best bangs for your buck on the market.

    Multi-Stage Air Purification

    The Alen A375 Air Purifier – an upgraded version of the Alen A350 Air Purifier – uses an innovative combination filter, germicidal technology, and a photocatalytic oxidizing (PCO) process to perform four levels of air purification in your indoor environment.

    • Pre-Filter – To begin the air-cleaning process, air moves through the A375UV pre-filter. This filter regularly removes large particles from the air, such as dust particles and hair, and helps to prolong the life and overall efficiency of the HEPA filter.
    • HEPA Filter – Next, air moves through a powerful HEPA-style filter to remove approximately 98% of all particles that measure 0.3 microns and larger. That means even the tiniest pollen, dust, animal dander, and mold particles are eliminated from the air you breathe.
    • Activated Carbon Filter – The third layer of filtration is an activated carbon filter designed to remove common household odors such as smoke, cooking odors, and pet odors. This filter is loaded with more carbon material than the A350 model's filter for improved odor control.
    • UV Germicidal Lamp with PCO Technology – Finally, double UV lamps provide an additional layer of air purification, destroying viruses, bacteria, and other germs that may cause illnesses. The UV lamps also use PCO technology, which neutralizes volatile organic compounds (VOCs), which can be more difficult to filter using carbon alone. Common household VOCs include chemical odors stemming from glues, carpeting, printers, composite wood materials, and aerosols.

    Simple, Hassle-Free Maintenance

    The Alen A375UV Multi-Gas HEPA Air Purifier is extremely easy to use and maintain. With only one combination air filter to replace every 6 to 9 months on average, you'll save money and time on filter changes. To replace the filter, simply remove the front cover of the air purifier, remove the dirty filter, and replace it with a new three-in-one filter. There are no tools required, and the process takes just seconds. Alen also recommends that you clean the pre-filter and air inlet grille after every 200 to 300 hours of use to ensure unobstructed airflow. The pre-filter can be cleaned with a vacuum or by washing.

    Feature-Rich Control Panel

    The Alen A375 Air Purifier is a breeze to use with its upgraded controls. Control panel features include:

    • Four Fan Speeds – Select from four fan speeds to find your perfect level of air purification.
    • Filter Replacement Indicator - Always stay on top of filter replacements with the built-in filter replacement indicator.
    • Digital Display – Intuitive digital controls help you navigate performance options more easily.
    • 8-Hour Timer – This UV air purifier's onboard timer is programmable for up to 8 hours. That means you can set it to run at only certain periods of the day and gain greater control over your energy usage.
    • Built-In Ionizer – An independently controlled ionizer produces healthy negative ions, which naturally occur in nature, to help inhibit airborne bacteria growth, promote the capture of harmful particles, and enhance your mood and temperament.
    • Dust and Odor Sensors – These sensors automatically adjust the air cleaner's fan speed based on the air quality level in your room.
    • Soft-Touch Buttons – The Alen A375UV control panel features comfort-touch pushbuttons.
    • Remote Control – A convenient remote control allows you to control system operation from a comfortable distance.

    Additional Product Features

    The Alen A375UV Ultra HEPA Air Purifier also features:

    • Large Room Coverage – This Alen air purifier covers spaces as large as 650 square feet. For optimal performance, use it in a space no larger than 400 square feet.
    • Ozone-Safe Design – Absolutely no ozone or other unhealthy environmental by-products are produced during the A375UV's air purification and ionization processes.
    • RoHS-Compliant – The A375UV is free of lead, mercury, cadmium, and the three other toxic substances restricted by the RoHS directive.
    • Sleek Design – With a sleek, space-saving footprint, the A375UV won't hamper your indoor space.
    • Wall-Mountable – This Alen air purifier can be mounted on a wall to conserve valuable floor space.
    • Safety Auto Shut-Off – When the front cover of the air cleaner is removed, it automatically shuts off to ensure your safety.
    • Quiet Operation – At its fourth and highest speed setting, the A375UV operates at 65 decibels, which is comparable to the sound of normal conversation. On its lowest fan speed, the unit exerts 36 decibels of sound, which is just a little louder than a whisper.
    • Energy Star Rating – The Alen A375UV air cleaner is one of the few air purification systems on the market that is Energy Star-rated for efficient operation.

    Filter Options

    Choose from 4 combination filter options to customize your type of filtration. The A375 comes with the standard Alen BF25A HEPA/Carbon Filter. But you can upgrade to the:

    Manufacturer's Warranty

    Limited Lifetime Warranty; Note: Warranty is voided when using the unit outside the U.S.

    Manufacturer's Literature

    User's Guide
    Includes setup instructions, filter replacement information, technical specifications, safety tips, and warranty information.
    Lifetime Warranty Information
    Details about Alen's Lifetime Warranty program.
    Bacteria Removal Test Results
    Lab results demonstrating the bacterial removal power of the A375UV air purifier.
    Ozone Emission Test Results
    Lab results demonstrating that the A375UV air cleaner is an ozone-safe appliance.
    VOC Removal Test Results
    Test results detailing the removal of VOCs overtime using the Alen A375UV air cleaner.

    What's In The Box?

    • Alen A375UV Air Purifier with Filters
    • Power Cord
    • Remote Control
    • User's Manual

    View All Air Purifiers »
  • Specifications

    Manufacturer-Suggested Room Size (sq. ft.)650 sq. ft.
    Recommended ForAllergies, Asthma, General Air Quality, Odor & Chemical, Smoke
    Best Fit Ideal for allergy- and asthma-sufferers and removing light household odors from chemicals and smoke
    Height20.2 in.
    Width18.5 in.
    Depth9.9 in.
    Weight19 lbs.
    Filtration System
    • Carbon Filter, Activated carbon mesh filter
    • Germ Treatment, Ultraviolet light
    • HEPA Filter, HEPA-style filter
    • Ionizer, Ozone-safe ionizer
    • Pre-Filter, Washable
    Pre-Filter TypeWashable
    HEPA Filter TypeHEPA-style filter
    Amount of CarbonActivated carbon mesh filter
    Ionizer TypeOzone-safe ionizer
    Type of Germ TreatmentUltraviolet light
    Number of Filters to Change1
    Pre-Filter6 months
    HEPA Filter6 months
    Carbon Filter6 months
    Number of Fan Speeds4
    Amount of Air Moved (Max CFM)178 CFM
    Minimum Noise Level38 dB
    Maximum Noise Level64.3 dB
    Filter Change IndicatorYes
    Programmable TimerYes
    Remote ControlYes
    Minimum Wattage32 W
    Maximum Wattage104 W
    Voltage110-120 V
    Energy StarNo
    Ozone EmissionNone
  • Product Q&A

    Important FAQ information and shipping/payment details
  • Reviews

    View All Alen A375UV Multi Gas Air Purifier Reviews


    by PowerReviews
    Alen A375UV Multi Gas Air Purifier

    (based on 6 reviews)

    Ratings Distribution

    • 5 Stars



    • 4 Stars



    • 3 Stars



    • 2 Stars



    • 1 Stars



    Reviewed by 6 customers

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    Displaying reviews 1-6

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    Was Highly Recommended But...

    By Former Alen Customer

    from Sarasota, FL

    About Me Quality Oriented

    Verified Reviewer


    • Attractive Design


    • Pricey
    • Short life

    Best Uses

    • Bedroom
    • Living Room

    Comments about Alen A375UV Multi Gas Air Purifier:

    I bought two Alen A375UV units in January 2012. I ran one at home in my bedroom and the other in my mother's private room at an assisted living facility. Within the past month, both have burnt out and no longer function at all. This was not due to power surges as I have protection on my electrical lines. I ran both units continuously on setting 2 using UV and ionizer only during the night, changed filters regularly as soon as the warning lights illuminated, and did not subject the units to especially harsh conditions. There was plenty of space around each unit for adequate ventilation. Were these units tailored for a 2-year maximum run? They worked well while they lasted, but I expect a $500 unit to last more than 2 years. Disappointed and will look elsewhere for a comparable but longer-lasting product.

    • Primary use:
    • Personal

    (3 of 3 customers found this review helpful)


    Noticable Difference

    By Bob

    from USA

    Verified Buyer

    Comments about Alen A375UV Multi Gas Air Purifier:

    Whenever I would enter our basement area, within a few minutes my nasal passages would start to swell up. Within a few hours of starting these air purifiers, there was a noticable difference in the lack of smell in the air. Two weeks later, I can know enter and work in the basement with none of the former symptoms occuring.

    (2 of 2 customers found this review helpful)


    works great

    By Laura

    from USA

    Verified Buyer

    Comments about Alen A375UV Multi Gas Air Purifier:

    It seems to be working properly and does what it says it will. It IS a bit noisy on the higher levels, but works great!

    (6 of 6 customers found this review helpful)


    Alen A375 multigas

    By chad price

    from USA

    Verified Buyer

    Comments about Alen A375UV Multi Gas Air Purifier:

    After owning 4 other HEPA filters, this is the most effective unit for the money. I have severe hypersensitivity and chronic health problems as a result of exposure to stachybotrys and aspergillus. The photo-catalytic oxidation feature of this unit works well and I highly recommend it to anyone suffering from multiple chemical sensitivity, asthma, or other health problems related to mold exposure.

    (5 of 5 customers found this review helpful)


    Great Product

    By Gerald Burd

    from USA

    Comments about Alen A375UV Multi Gas Air Purifier:

    As air purifiers go, this product is top drawer. Both my wife and I have noticed a definite improvement in our sleep and sinus issues. We like the technology and display.

    (5 of 5 customers found this review helpful)


    No more fumes!

    By Marguerite Mendoza

    from USA

    Comments about Alen A375UV Multi Gas Air Purifier:

    I own a cleaning service and all the fumes in our cleaning supply closet were making everyone nauseous and giving them headaches. After I got the Alen 375 everyone is feeling much better and my staff is taking less sick days.

    Displaying reviews 1-6

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