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Deal.ai › GermGuardian
GermGuardian
GermGuardian Air Purifier

GermGuardian Air Purifier

4.8(471 ratings)

Best price now

$99.99at AmazonChecked 39 min ago

Compared across 4 stores. Prices are checked against each store and labelled with when. As an Amazon Associate, Deal.ai earns from qualifying purchases.

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Price facts

  • Best price today: $99.99 at Amazon (checked Nov 10, 2026).
  • Checked at 4 stores.
  • Our take on the GermGuardian Air Purifier

    The GermGuardian AC4825 is a 22-inch tower air purifier that combines a true HEPA filter, a charcoal odor filter and a UV-C light. It is a simple, proven design: three fan speeds, a filter change indicator and no app or smart features. Its CADR ratings (118 dust, 99 smoke, 125 pollen CFM) suit a bedroom or medium living room rather than a large open floor. Owners rate it highly for quiet low-speed operation and easier breathing, while critics point to the UV bulb and filter replacement costs and the lack of a timer.

    Best forBedrooms and medium roomsPet owners and smokersAllergy and dust sufferersShoppers who want a simple, no-app purifier
    Pros
    • True HEPA plus charcoal filter traps dust, pollen and common odors
    • UV-C light adds bacteria and mold-spore reduction
    • Low speed is quiet enough for a bedroom
    • Slim 6.75-inch tower footprint fits tight corners
    • Filter change indicator takes the guesswork out of maintenance
    • Zero ozone certified
    Cons
    • No timer, app or remote control
    • Replacement HEPA and UV-C bulbs add ongoing cost
    • UV-C lamp offers little benefit for most household use
    • Small CADR limits it to one medium room
    • Bulb replacement is a separate step owners forget

    GermGuardian Air Purifier prices at every store

    • The Home DepotNew

      In stock

      $39.99Free shippingChecked 39 min ago
      Visit The Home Depot
    • QuillNew

      In stock

      $99.98+ $2.99 shippingChecked 39 min ago
      Visit Quill
    • Guardian TechnologiesNew

      In stock

      $99.99+ $9.00 shippingChecked 39 min ago
      Visit Guardian Technologies
    • AmazonNew

      Availability unknown

      As an Amazon Associate, Deal.ai earns from qualifying purchases.

      $99.99Free shippingChecked 39 min ago
      Visit Amazon

    GermGuardian Air Purifier price history

    Lowest price we've seen: $39.99 on Nov 11 at The Home Depot. Tracked across 4 stores since Nov 11.

    What reviewers say

    • 4.8 / 5471 ratings

    Owners rate the AC4825 highly, praising quiet low-speed running, less dust and easier breathing in bedrooms. Complaints center on replacement filter and bulb costs and the absence of a timer.

    What people mention
    • NoisePraisedOwners say low speed is nearly silent and high speed is tolerable for short bursts.
    • FiltrationPraisedUsers report less dust, pollen and pet dander in the room.
    • Filter costCriticisedOwners complain that replacement HEPA filters and UV bulbs are a recurring expense.
    • UV-C lightMixedSome value the germ and mold reduction; others doubt it does much and dislike replacing the bulb.
    • FeaturesCriticisedReviewers miss a timer, auto mode and app control found on rival purifiers.
    • SizeMixedThe slim tower fits small rooms well but its CADR is too low for large open spaces.

    From Quill

    • Charcoal filter reduces common odors from pets, smoking and cooking
    • UV-C light technology works with Titanium Dioxide to eliminate airborne bacteria, viruses, germs and mold spores
    • 22" three-speed tower is best used for medium sized rooms and CADR rated 100+
    • Low speed runs ultra-quiet
    • Includes a UV-C control and a filter change indicator
    Sizing
    22" tall tower; ideal for medium sized rooms with 100-200 square feet coverage
    Guarantee
    3-Year Limited Warranty
    Returns
    Free returns
    Shipping
    Delivery: Fri, Nov 13 - Thu, Nov 19; next-day delivery on most orders
    In the box
    Air purifier, UV-C control, Filter change indicator

    About the GermGuardian Air Purifier

    See pricing info, deals and product reviews for GermGuardian 3-in-1 True HEPA Tower Air Purifier, 3-Speed, Black (AC4825) at Quill. Order online today and get next-day delivery on most orders.

    Specifications

    Coverage Area
    Up to 743 sq. ft. per hour
    Automatic Shutoff
    Yes
    Timer
    No
    Air Purification Type
    UV-C, HEPA, HEPA filter, Odor Reduction
    CADR Rating
    Smoke 99 CFM, Dust 118 CFM, Pollen 125 CFM
    Ozone Generation
    Zero Ozone Certified
    Filter Type
    HEPA Filter

    Questions and answers

    How large a room does the AC4825 handle?
    It is rated for medium rooms, roughly a bedroom or small living room. Its CADR of 118 dust, 99 smoke and 125 pollen CFM means it cleans one room well rather than a whole floor.
    Does it really remove odors?
    The charcoal filter reduces common odors from pets, cooking and smoke. It helps with mild odors but is not a heavy-duty odor eliminator.
    Do I have to replace the UV-C bulb?
    Yes, the UV-C bulb is a consumable and needs periodic replacement to keep working. The purifier runs fine with the UV-C off if you only want HEPA filtration.
    Is it ozone free?
    Yes. It is zero ozone certified, and the UV-C lamp is designed not to produce harmful ozone levels.
    Does it have a timer or app control?
    No. It has three manual fan speeds, a UV-C control and a filter change indicator, with no timer, remote or app.
    How often do filters need changing?
    The filter change indicator lights when the HEPA filter needs replacing, typically every six to twelve months depending on use.
    Where is the GermGuardian Air Purifier cheapest?
    At Amazon, for $99.99, as of our latest check.
    What do buyers say about the GermGuardian Air Purifier?
    Rated 4.8 out of 5 from 471 ratings.
    Where can I buy the GermGuardian Air Purifier?
    4 stores we checked sell it, including Quill, Guardian Technologies, The Home Depot, Amazon.

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    Stores we've priced the GermGuardian Air Purifier at

    • Guardian Technologies deals and prices
    • Home Depot deals and prices

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    All GermGuardian deals and products →
    HEPA Filter
    Yes
    Ionic Filtration
    No
    Odor Absorbing
    Yes
    Permanent Filter
    No (requires replacement)
    Filter Highlights
    HEPA Filter
    App Control
    No
    Assistant Support
    No
    Remote Control
    No
    Depth
    6.75 in
    Height
    22 in
    Weight
    8.55 lb
    Width
    10.25 in
    Noise Level
    40dB to 55dB
    Ozone Free
    Yes
    Color
    White
    Portability
    Yes
    Shape
    Tower